01-020r062101

ILLINOIS POLLUTION CONTROL BOARD

June 21, 2001

IN THE MATTER OF:

)

SDWA UPDATE, USEPA AMENDMENTS

)

R01-20

(July 1, 2000, through December 31, 2000;

)

(Identical-in-Substance Rulemaking -

Radionuclides)

)

Public Water Supply)

Proposed Rule. Proposal for Public Comment.

ORDER OF THE BOARD (by R.C. Flemal):

Under Sections 7.2 and 17.5 of the Environmental Protection Act (Act) (415 ILCS 5/7.2 and

17.5 (2000)), the Board proposes amendments to the Illinois regulations that are “identical in

substance” to drinking water regulations that the United States Environmental Protection Agency

(USEPA) adopted to implement Sections 1412(b), 1414(c), 1417(a), and 1445(a) of the federal Safe

Drinking Water Act (SDWA) (42 U.S.C. §§ 300g-1(a), 300g-3(c), 300g-6(a), and 300j-4(a)

(2000)). The nominal timeframe of this docket includes federal SDWA amendments that USEPA

adopted in the period July 1, 2000, through December 31, 2000.

Sections 7.2 and 17.5 provide for quick adoption of regulations that are identical in substance

to federal regulations that USEPA adopts to implement Sections 1412(b), 1414(c), 1417(a), and

1445(a) of the federal Safe Drinking Water Act (SDWA) (42 U.S.C. §§ 300g-1(a), 300g-3(c), 300g-

6(a), and 300j-4(a) (2000)). Section 17.5 also provides that Title VII of the Act and Section 5 of the

Administrative Procedure Act (APA) (5 ILCS 100/5-35 and 5-40 (2000)) do not apply to the Board’s

adoption of identical-in-substance regulations. The federal SDWA regulations are found at 40 C.F.R.

141 through 143.

This order is supported by an opinion that the Board also adopts today. The Board will cause

the proposed amendments to be published in the

Illinois Register

and will hold the docket open to

receive public comments for 45 days after the date of publication.

IT IS SO ORDERED.

I, Dorothy M. Gunn, Clerk of the Illinois Pollution Control Board, do hereby certify that the

above order was adopted on the 21st day of June 2001 by a vote of 7-0.

Dorothy M. Gunn, Clerk

Illinois Pollution Control Board

TITLE 35: ENVIRONMENTAL PROTECTION

SUBTITLE F: PUBLIC WATER SUPPLIES

CHAPTER I: POLLUTION CONTROL BOARD

PART 611

PRIMARY DRINKING WATER STANDARDS

SUBPART A: GENERAL

Section

611.100

Purpose, Scope and Applicability

611.101

Definitions

611.102

Incorporations by Reference

611.103

Severability

611.107

Agency Inspection of PWS Facilities

611.108

Delegation to Local Government

611.109

Enforcement

611.110

Special Exception Permits

611.111

Relief Equivalent to SDWA Section 1415(a) Variances

611.112

Relief Equivalent to SDWA Section 1416 Exemptions

611.113

Alternative Treatment Techniques

611.114

Siting requirements

611.115

Source Water Quantity

611.120

Effective dates

611.121

Maximum Contaminant Levels and Finished Water Quality

611.125

Fluoridation Requirement

611.126

Prohibition on Use of Lead

611.130

Special Requirements for Certain Variances and Adjusted Standards

611.131

Relief Equivalent to SDWA Section 1415(e) Small System Variance

611.160

Composite Correction Program

SUBPART B: FILTRATION AND DISINFECTION

Section

611.201

Requiring a Demonstration

611.202

Procedures for Agency Determinations

611.211

Filtration Required

611.212

Groundwater under Direct Influence of Surface Water

611.213

No Method of HPC Analysis

611.220

General Requirements

611.230

Filtration Effective Dates

611.231

Source Water Quality Conditions

611.232

Site-specific Conditions

611.233

Treatment Technique Violations

611.240

Disinfection

611.241

Unfiltered PWSs

611.242

Filtered PWSs

611.250

Filtration

611.261

Unfiltered PWSs: Reporting and Recordkeeping

611.262

Filtered PWSs: Reporting and Recordkeeping

611.271

Protection during Repair Work

611.272

Disinfection following Repair

SUBPART C: USE OF NON-CENTRALIZED TREATMENT DEVICES

Section

611.280

Point-of-Entry Devices

611.290

Use of Point-of-Use Devices or Bottled Water

SUBPART D: TREATMENT TECHNIQUES

Section

611.295

General Requirements

611.296

Acrylamide and Epichlorohydrin

611.297

Corrosion Control

SUBPART F: MAXIMUM CONTAMINANT LEVELS (MCLs) AND

MAXIMUM RESIDUAL DISINFECTANT LEVELS (MRDLs)

Section

611.300

Old MCLs for Inorganic Chemicals

611.301

Revised MCLs for Inorganic Chemicals

611.310

Old Maximum Contaminant Levels (MCLs) for Organic Chemicals

611.311

Revised MCLs for Organic Contaminants

611.312

Maximum Contaminant Levels (MCLs) for Disinfection Byproducts (DBPs)

611.313

Maximum Residual Disinfectant Levels (MRDLs)

611.320

Turbidity

611.325

Microbiological Contaminants

611.330

Radium and Gross Alpha Particle ActivityMaximum Contaminant Levels for

Radionuclides

611.331

Beta Particle and Photon Radioactivity

SUBPART G: LEAD AND COPPER

Section

611.350

General Requirements

611.351

Applicability of Corrosion Control

611.352

Corrosion Control Treatment

611.353

Source Water Treatment

611.354

Lead Service Line Replacement

611.355

Public Education and Supplemental Monitoring

611.356

Tap Water Monitoring for Lead and Copper

611.357

Monitoring for Water Quality Parameters

611.358

Monitoring for Lead and Copper in Source Water

611.359

Analytical Methods

611.360

Reporting

611.361

Recordkeeping

SUBPART I: DISINFECTANT RESIDUALS, DISINFECTION BYPRODUCTS,

AND DISINFECTION BYPRODUCT PRECURSORS

Section

611.380

General Requirements

611.381

Analytical Requirements

611.382

Monitoring Requirements

611.383

Compliance Requirements

611.384

Reporting and Recordkeeping Requirements

611.385

Treatment Technique for Control of Disinfection Byproduct (DBP) Precursors

SUBPART K: GENERAL MONITORING AND ANALYTICAL

REQUIREMENTS

Section

611.480

Alternative Analytical Techniques

611.490

Certified Laboratories

611.491

Laboratory Testing Equipment

611.500

Consecutive PWSs

611.510

Special Monitoring for Unregulated Contaminants

SUBPART L: MICROBIOLOGICAL MONITORING AND ANALYTICAL

REQUIREMENTS

Section

611.521

Routine Coliform Monitoring

611.522

Repeat Coliform Monitoring

611.523

Invalidation of Total Coliform Samples

611.524

Sanitary Surveys

611.525

Fecal Coliform and E. Coli Testing

611.526

Analytical Methodology

611.527

Response to Violation

611.531

Analytical Requirements

611.532

Unfiltered PWSs

611.533

Filtered PWSs

SUBPART M: TURBIDITY MONITORING AND ANALYTICAL

REQUIREMENTS

Section

611.560

Turbidity

SUBPART N: INORGANIC MONITORING AND ANALYTICAL

REQUIREMENTS

Section

611.591

Violation of State MCL

611.592

Frequency of State Monitoring

611.600

Applicability

611.601

Monitoring Frequency

611.602

Asbestos Monitoring Frequency

611.603

Inorganic Monitoring Frequency

611.604

Nitrate Monitoring

611.605

Nitrite Monitoring

611.606

Confirmation Samples

611.607

More Frequent Monitoring and Confirmation Sampling

611.608

Additional Optional Monitoring

611.609

Determining Compliance

611.610

Inorganic Monitoring Times

611.611

Inorganic Analysis

611.612

Monitoring Requirements for Old Inorganic MCLs

611.630

Special Monitoring for Sodium

611.631

Special Monitoring for Inorganic Chemicals

SUBPART O: ORGANIC MONITORING AND ANALYTICAL REQUIREMENTS

Section

611.640

Definitions

611.641

Old MCLs

611.645

Analytical Methods for Organic Chemical Contaminants

611.646

Phase I, Phase II, and Phase V Volatile Organic Contaminants

611.647

Sampling for Phase I Volatile Organic Contaminants (Repealed)

611.648

Phase II, Phase IIB, and Phase V Synthetic Organic Contaminants

611.650

Monitoring for 36 Contaminants (Repealed)

611.657

Analytical Methods for 36 Contaminants (Repealed)

611.658

Special Monitoring for Organic Chemicals

SUBPART P: THM MONITORING AND ANALYTICAL REQUIREMENTS

Section

611.680

Sampling, Analytical and other Requirements

611.683

Reduced Monitoring Frequency

611.684

Averaging

611.685

Analytical Methods

611.686

Modification to System

611.687

Sampling for THM Potential

611.688

Applicability Dates

SUBPART Q: RADIOLOGICAL MONITORING AND ANALYTICAL

REQUIREMENTS

Section

611.720

Analytical Methods

611.731

Gross Alpha

611.732

Manmade Beta Particle and Photon Radioactivity

611.733

General Monitoring and Compliance Requirements

SUBPART R: ENHANCED FILTRATION AND DISINFECTION

Section

611.740

General Requirements

611.741

Standards for Avoiding Filtration

611.742

Disinfection Profiling and Benchmarking

611.743

Filtration

611.744

Filtration Sampling Requirements

611.745

Reporting and Recordkeeping Requirements

SUBPART T: REPORTING AND RECORDKEEPING

Section

611.830

Applicability

611.831

Monthly Operating Report

611.832

Notice by Agency (Repealed)

611.833

Cross Connection Reporting

611.840

Reporting

611.851

Reporting MCL, MRDL, and other Violations (Repealed)

611.852

Reporting other Violations (Repealed)

611.853

Notice to New Billing Units (Repealed)

611.854

General Content of Public Notice (Repealed)

611.855

Mandatory Health Effects Language (Repealed)

611.856

Fluoride Notice (Repealed)

611.858

Fluoride Secondary Standard (Repealed)

611.860

Record Maintenance

611.870

List of 36 Contaminants

SUBPART U: CONSUMER CONFIDENCE REPORTS

Section

611.881

Purpose and Applicability of this Subpart

611.882

Compliance Dates

611.883

Content of the Reports

611.884

Required Additional Health Information

611.885

Report Delivery and Recordkeeping

SUBPART V: PUBLIC NOTIFICATION OF DRINKING WATER

VIOLATIONS

Section

611.901

General Public Notification Requirements

611.902

Tier 1 Public Notice--Form, Manner, and Frequency of Notice

611.903

Tier 2 Public Notice--Form, Manner, and Frequency of Notice

611.904

Tier 3 Public Notice--Form, Manner, and Frequency of Notice

611.905

Content of the Public Notice

611.906

Notice to New Billing Units or New Customers

611.907

Special Notice of the Availability of Unregulated Contaminant Monitoring Results

611.908

Special Notice for Exceedance Exceedence of the Fluoride Secondary Standard

611.909

Special Notice for Nitrate Exceedances Exceedences above the MCL by a Non-

Community Water System

611.910

Notice by the Agency on Behalf of a PWS

611.Appendix A

Regulated Contaminants

611.Appendix B

Percent Inactivation of G. Lamblia Cysts

611.Appendix C

Common Names of Organic Chemicals

611.Appendix D

Defined Substrate Method for the Simultaneous Detection of Total Coliforms

and Eschericia Coli from Drinking Water

611.Appendix E

Mandatory Lead Public Education Information for Community Water Systems

611.Appendix F

Mandatory Lead Public Education Information for Non-Transient Non-

Community Water Systems

611.Appendix G

NPDWR Violations and Situations Requiring Public Notice

611.Appendix H

Standard Health Effects Language for Public Notification

611.Appendix I

Acronyms Used in Public Notification Regulation

611.Table A

Total Coliform Monitoring Frequency

611.Table B

Fecal or Total Coliform Density Measurements

611.Table C

Frequency of RDC Measurement

611.Table D

Number of Lead and Copper Monitoring Sites

611.Table E

Lead and Copper Monitoring Start Dates

611.Table F

Number of Water Quality Parameter Sampling Sites

611.Table G

Summary of Section 611.357 Monitoring Requirements for Water Quality

Parameters

611.Table Z

Federal Effective Dates

AUTHORITY: Implementing Sections 7.2, 17, and 17.5 and authorized by Section 27 of the

Environmental Protection Act [415 ILCS 5/7.2, 17, 17.5, and 27].

SOURCE: Adopted in R88-26 at 14 Ill. Reg. 16517, effective September 20, 1990; amended in R90-

21 at 14 Ill. Reg. 20448, effective December 11, 1990; amended in R90-13 at 15 Ill. Reg. 1562,

effective January 22, 1991; amended in R91-3 at 16 Ill. Reg. 19010, effective December 1, 1992;

amended in R92-3 at 17 Ill. Reg. 7796, effective May 18, 1993; amended in R93-1 at 17 Ill. Reg.

12650, effective July 23, 1993; amended in R94-4 at 18 Ill. Reg. 12291, effective July 28, 1994;

amended in R94-23 at 19 Ill. Reg. 8613, effective June 20, 1995; amended in R95-17 at 20 Ill. Reg.

14493, effective October 22, 1996; amended in R98-2 at 22 Ill. Reg. 5020, effective March 5, 1998;

amended in R99-6 at 23 Ill. Reg. 2756, effective February 17, 1999; amended in R99-12 at 23 Ill.

Reg. 10348, effective August 11, 1999; amended in R00-8 at 23 Ill. Reg. 14715, effective December

8, 1999; amended in R00-10 at 24 Ill. Reg. 14226 effective September 11, 2000; amended in R01-7

at 25 Ill. Reg. 1329, effective January 11, 2001; amended in R01-20 at 25 Ill. Reg. ________,

effective ______________________.

SUBPART A: GENERAL

Section 611.102

Incorporations by Reference

Abbreviations and short-name listing of references. The following names and

abbreviated names, presented in alphabetical order, are used in this Part to refer to

materials incorporated by reference:

“Amco-AEPA-1 Polymer” is available from Advanced Polymer Systems.

“ASTM Method” means a method published by and available from the

American Society for Testing and Materials (ASTM).

“Colisure Test” means “Colisure Presence/Absence Test for Detection and

Identification of Coliform Bacteria and Escherichia Coli in Drinking Water”,”

available from Millipore Corporation, Technical Services Department.

“Dioxin and Furan Method 1613” means “Tetra- through Octa- Chlorinated

Dioxins and Furans by Isotope-Dilution HRGC/HRMS”,” available from NTIS.

“GLI Method 2” means GLI Method 2, “Turbidity”,” Nov. 2, 1992, available

from Great Lakes Instruments, Inc.

“Guidance Manual for Compliance with the Filtration and Disinfection

Requirements for Public Water Systems Using Surface Water Sources”,”

available from USEPA Science and Technology Branch.

“HASL Procedure Manual” means HASL Procedure Manual, HASL 300,

available from ERDA Health and Safety Laboratory.

“Maximum Permissible Body Burdens and Maximum Permissible

Concentrations of Radionuclides in Air and in Water for Occupational

Exposure”,” NCRP Report Number 22, available from NCRP.

“NCRP” means “National Council on Radiation Protection”.

“NTIS” means “National Technical Information Service”.

“New Jersey Radium Method” means “Determination of Radium 228 in

Drinking Water”,” available from the New Jersey Department of Environmental

Protection.

“New York Radium Method” means “Determination of Ra-226 and Ra-228

(Ra-02)”,” available from the New York Department of Public Health.

“ONGP-MUG Test” (meaning “minimal medium ortho-nitrophenyl-beta-d-

galactopyranoside-4-methyl-umbelliferyl-beta-d-glucuronide test”), also called

the “Autoanalysis Colilert System”,” is Method 9223, available in “Standard

Methods for the Examination of Water and Wastewater”,” 18th ed., from

American Public Health Association.

“Procedures for Radiochemical Analysis of Nuclear Reactor Aqueous

Solutions”,” available from NTIS.

“Radiochemical Methods” means “Interim Radiochemical Methodology for

Drinking Water”,” available from NTIS.

“Standard Methods”,” means “Standard Methods for the Examination of Water

and Wastewater”,” available from the American Public Health Association or

the American Waterworks Association.

“Technical Bulletin 601” means “Technical Bulletin 601, Standard Method of

Testing for Nitrate in Drinking Water”,” July 1994, available from Analytical

Technology, Inc.

“Technicon Methods” means “Fluoride in Water and Wastewater”,” available

from Technicon.

“USDOE Manual” means “EML Procedures Manual”,” available from the

United State Department of Energy.

“USEPA Asbestos Methods-100.1” means Method 100.1, “Analytical Method

for Determination of Asbestos Fibers in Water”,” available from NTIS.

“USEPA Asbestos Methods-100.2” means Method 100.2, “Determination of

Asbestos Structures over 10-mm in Length in Drinking Water”,” available from

NTIS.

“USEPA Environmental Inorganics Methods” means “Methods for the

Determination of Inorganic Substances in Environmental Samples”,” available

from NTIS; “Methods for the Determination of Inorganic Substances in

Environmental Samples”,” August 1993, for Method 300.0; “Determination of

Inorganic Anions in Drinking Water by Ion Chromatography, Revision 1.0”,”

1997, for Method 300.1.

“USEPA Environmental Metals Methods” means “Methods for the

Determination of Metals in Environmental Samples”,” available from NTIS.

“USEPA Organic Methods” means “Methods for the Determination of Organic

Compounds in Drinking Water”,” July 1991, for Methods 502.2, 505, 507,

508, 508A, 515.1, and 531.1; “Methods for the Determination of Organic

Compounds in Drinking Water--Supplement I”,” July 1990, for Methods 506,

547, 550, 550.1, and 551; and “Methods for the Determination of Organic

Compounds in Drinking Water--Supplement II”,” August 1992, for Methods

515.2, 524.2, 548.1, 549.1, 552.1, and 555, available from NTIS. Methods

504.1, 508.1, and 525.2 are available from EPA EMSL; “Methods for the

Determination of Organic Compounds” in Drinking Water-Supplement II,

August 1992, for Method 552.1; “Methods for the Determination of Organic

Compounds in Drinking Water-Supplement III”,” August 1995, for Methods

502.2, 524.2, 551.1, and 552.2.

“USEPA Interim Radiochemical Methods” means “Interim Radiochemical

Methodology for Drinking Water”,” EPA 600/4-75-008 (revised), March

1976. Available from NTIS.

“USEPA Radioactivity Methods” means “Prescribed Procedures for

Measurement of Radioactivity in Drinking Water”,” EPA 600/4-80-032,

August 1980. Available from NTIS.

“USEPA Radiochemical Analyses” means “Radiochemical Analytical

Procedures for Analysis of Environmental Samples”,” March 1979. Available

from NTIS.

“USEPA Radiochemistry Methods” means “Radiochemistry Procedures

Manual”,” EPA 520/5-84-006, December 1987. Available from NTIS.

“USEPA Technical Notes” means “Technical Notes on Drinking Water

Methods”,” available from NTIS.

“USGS Methods” means “Methods of Analysis by the U.S. Geological Survey

National Water Quality Laboratory--Determination of Inorganic and Organic

Constituents in Water and Fluvial Sediments”,” available from NTIS and

USGS.

“Waters Method B-1011” means “Waters Test Method for the Determination

of Nitrite/Nitrate in Water Using Single Column Ion Chromatography”,”

available from Millipore Corporation, Waters Chromatography Division.

The Board incorporates the following publications by reference:

Access Analytical Systems, Inc. (See Environetics, Inc.)

Advanced Polymer Systems, 3696 Haven Avenue, Redwood City, CA 94063

415-366-2626:

Amco-AEPA-1 Polymer. See 40 CFR 141.22(a) (1998). Also, as

referenced in ASTM D1889.

American Public Health Association, 1015 Fifteenth Street NW, Washington,

DC 20005 800-645-5476:

“Standard Methods for the Examination of Water and Wastewater”,”

17th Edition 1989 (referred to as “Standard Methods, 17th ed.”).

“Standard Methods for the Examination of Water and Wastewater”,”

18th Edition, 1992, including “Supplement to the 18th Edition of

Standard Methods for the Examination of Water and Wastewater”,”

1994 (collectively referred to as “Standard Methods, 18th ed.”). See

the methods listed separately for the same references under American

Water Works Association.

“Standard Methods for the Examination of Water and Wastewater”,”

19th Edition, 1995 (referred to as “Standard Methods, 19th ed.”).

American Waterworks Association et al., 6666 West Quincy Ave., Denver,

CO 80235 303-794-7711:

Standard Methods for the Examination of Water and Wastewater, 13th

Edition, 1971 (referred to as “Standard Methods, 13th ed.”).

Method 302, Gross Alpha and Gross Beta Radioactivity in

Water (Total, Suspended and Dissolved).

Method 303, Total Radioactive Strontium and Strontium 90 in

Water.

Method 304, Radium in Water by Precipitation.

Method 305, Radium 226 by Radon in Water (Soluble,

Suspended and Total).

Method 306, Tritium in Water.

Standard Methods for the Examination of Water and Wastewater, 18th

Edition, 1992 (referred to as “Standard Methods, 18th ed.”):

Method 2130 B, Turbidity, Nephelometric Method.

Method 2320 B, Alkalinity, Titration Method.

Method 2510 B, Conductivity, Laboratory Method.

Method 2550, Temperature, Laboratory and Field Methods.

Method 3111 B, Metals by Flame Atomic Absorption

Spectrometry, Direct Air-Acetylene Flame Method.

Method 3111 D, Metals by Flame Atomic Absorption

Spectrometry, Direct Nitrous Oxide-Acetylene Flame Method.

Method 3112 B, Metals by Cold-Vapor Atomic Absorption

Spectrometry, Cold-Vapor Atomic Absorption Spectrometric

Method.

Method 3113 B, Metals by Electrothermal Atomic Absorption

Spectrometry, Electrothermal Atomic Absorption

Spectrometric Method.

Method 3114 B, Metals by Hydride Generation/Atomic

Absorption Spectrometry, Manual Hydride Generation/Atomic

Absorption Spectrometric Method.

Method 3120 B, Metals by Plasma Emission Spectroscopy,

Inductively Coupled Plasma (ICP) Method.

Method 3500-Ca D, Calcium, EDTA Titrimetric Method.

Method 4110 B, Determination of Anions by Ion

Chromatography, Ion Chromatography with Chemical

Suppression of Eluent Conductivity.

Method 4500-CN

C, Cyanide, Total Cyanide after Distillation.

Method 4500-CN

E, Cyanide, Colorimetric Method.

Method 4500-CN

F, Cyanide, Cyanide-Selective Electrode

Method.

Method 4500-CN

G, Cyanide, Cyanides Amenable to

Chlorination after Distillation.

Method 4500-ClO

C, Chlorine Dioxide, Amperometric

Method I.

Method 4500-F

B, Fluoride, Preliminary Distillation Step.

Method 4500-F

C, Fluoride, Ion-Selective Electrode Method.

Method 4500-F

D, Fluoride, SPADNS Method.

Method 4500-F

E, Fluoride, Complexone Method.

Method 4500-H

B, pH Value, Electrometric Method.

Method 4500-NO

B, Nitrogen (Nitrite), Colorimetric

Method.

Method 4500-NO

D, Nitrogen (Nitrate), Nitrate Electrode

Method.

Method 4500-NO

E, Nitrogen (Nitrate), Cadmium Reduction

Method.

Method 4500-NO

F, Nitrogen (Nitrate), Automated

Cadmium Reduction Method.

Method 4500-O

B, Ozone (Residual) (Proposed), Indigo

Colorimetric Method.

Method 4500-P E, Phosphorus, Ascorbic Acid Method.

Method 4500-P F, Phosphorus, Automated Ascorbic Acid

Reduction Method.

Method 4500-Si D, Silica, Molybdosilicate Method.

Method 4500-Si E, Silica, Heteropoly Blue Method.

Method 4500-Si F, Silica, Automated Method for Molybdate-

Reactive Silica.

Method 4500-SO

C, Sulfate, Gravimetric Method with

Ignition of Residue.

Method 4500-SO

D, Sulfate, Gravimetric Method with

Drying of Residue.

Method 4500-SO

F, Sulfate, Automated Methylthymol Blue

Method.

Method 6610, Carbamate Pesticide Method.

Method 6651, Glyphosate Herbicide (Proposed).

Method 7110 B, Gross Alpha and Beta Radioactivity (Total,

Suspended, and Dissolved), Evaporation Method for Gross

Alpha-Beta.

Method 7110 C, Gross Alpha and Beta Radioactivity (Total,

Suspended, and Dissolved), Coprecipitation Method for Gross

Alpha Radioactivity in Drinking Water (Proposed).

Method 7500-Cs B, Radioactive Cesium, Precipitation

Method.

Method 7500-3H, B, Tritium, Liquid Scintillation Spectrometric

Method.

Method 7500-I B, Radioactive Iodine, Precipitation Method.

Method 7500-I C, Radioactive Iodine, Ion-Exchange Method.

Method 7500-I D, Radioactive Iodine, Distillation Method.

Method 7500-Ra B, Radium, Precipitation Method.

Method 7500-Ra C, Radium, Emanation Method.

Method 7500-Ra D, Radium, Sequential Precipitation Method

(Proposed).

Method 7500-U B, Uranium, Radiochemical Method

(Proposed).

Method 7500-U C, Uranium, Isotopic Method (Proposed).

Method 9215 B, Heterotrophic Plate Count, Pour Plate

Method.

Method 9221 A, Multiple-Tube Fermentation Technique for

Members of the Coliform Group, Introduction.

Method 9221 B, Multiple-Tube Fermentation Technique for

Members of the Coliform Group, Standard Total Coliform

Fermentation Technique.

Method 9221 C, Multiple-Tube Fermentation Technique for

Members of the Coliform Group, Estimation of Bacterial

Density.

Method 9221 D, Multiple-Tube Fermentation Technique for

Members of the Coliform Group, Presence-Absence (P-A)

Coliform Test.

Method 9222 A, Membrane Filter Technique for Members of

the Coliform Group, Introduction.

Method 9222 B, Membrane Filter Technique for Members of

the Coliform Group, Standard Total Coliform Membrane Filter

Procedure.

Method 9222 C, Membrane Filter Technique for Members of

the Coliform Group, Delayed-Incubation Total Coliform

Procedure.

Method 9223, Chromogenic Substrate Coliform Test

(Proposed).

Standard Methods for the Examination of Water and Wastewater, 19th

Edition, 1995 (referred to as “Standard Methods, 19th ed.”):

Method 7120-B, Gamma Spectrometric Method.

Method 7500-U C, Uranium, Isotopic Method.

Method 4500-Cl D, Chlorine (Residual), Amperometric

Titration Method.

Method 4500-Cl E, Chlorine (Residual), Low-Level

Amperometric Titration Method.

Method 4500-Cl F, Chlorine (Residual), DPD Ferrous

Titrimetric Method.

Method 4500-Cl G, Chlorine (Residual), DPD Colorimetric

Method.

Method 4500-Cl H, Chlorine (Residual), Syringaldazine

(FACTS) Method.

Method 4500-Cl I, Chlorine (Residual), Iodometric Electrode

Technique.

Method 4500-ClO

D, Chlorine Dioxide, DPD Method.

Method 4500-ClO

E, Chlorine Dioxide, Amperometric

Method II.

Method 6251 B, Disinfection Byproducts: Haloacetic Acids

and Trichlorophenol, Micro Liquid-Liquid Extraction Gas

Chromatographic Method.

Method 5910 B, UV Absorbing Organic Constituents,

Ultraviolet Absorption Method.

Supplement to the 19th Edition of Standard Methods for the

Examination of Water and Wastewater, American Public Health

Association, 1996:

Method 5310 B, TOC, Combustion-Infrared Method.

Method 5310 C, TOC, Persulfate-Ultraviolet Oxidation

Method.

Method 5310 D, TOC, Wet-Oxidation Method.

Analytical Technology, Inc. ATI Orion, 529 Main Street, Boston, MA 02129:

Technical Bulletin 601, “Standard Method of Testing for Nitrate in

Drinking Water”,” July, 1994, PN 221890-001 (referred to as

“Technical Bulletin 601”).

ASTM. American Society for Testing and Materials, 1976 Race Street,

Philadelphia, PA 19103 215-299-5585:

ASTM Method D511-93 A and B, “Standard Test Methods for

Calcium and Magnesium in Water”,” “Test Method A--complexometric

Titration” & “Test Method B--Atomic Absorption

Spectrophotometric”,” approved 1993.

ASTM Method D515-88 A, “Standard Test Methods for Phosphorus

in Water”,” “Test Method A--Colorimetric Ascorbic Acid Reduction”,”

approved August 19, 1988.

ASTM Method D859-88, “Standard Test Method for Silica in

Water”,” approved August 19, 1988.

ASTM Method D1067-92 B, “Standard Test Methods for Acidity or

Alkalinity in Water”,” “Test Method B--Electrometric or Color-Change

Titration”,” approved May 15, 1992.

ASTM Method D1125-91 A, “Standard Test Methods for Electrical

Conductivity and Resistivity of Water”,” “Test Method A--Field and

Routine Laboratory Measurement of Static (Non-Flowing) Samples”,”

approved June 15, 1991.

ASTM Method D1179-93 B “Standard Test Methods for Fluoride in

Water”,” “Test Method B--Ion Selective Electrode”,” approved 1993.

ASTM Method D1293-84 “Standard Test Methods for pH of

Water”,” “Test Method A--Precise Laboratory Measurement” & “Test

Method B--Routine or Continuous Measurement”,” approved October

26, 1984.

ASTM Method D1688-90 A or C, “Standard Test Methods for

Copper in Water”,” “Test Method A--Atomic Absorption, Direct” &

“Test Method C--Atomic Absorption, Graphite Furnace”,” approved

March 15, 1990.

ASTM Method D2036-91 A or B, “Standard Test Methods for

Cyanide in Water”,” “Test Method A--Total Cyanides after Distillation”

& “Test Method B--Cyanides Amenable to Chlorination by

Difference”,” approved September 15, 1991.

ASTM Method D2459-72, “Standard Test Method for Gamma

Spectrometry in Water,” approved July 28, 1972, discontinued 1988.

ASTM Method D2460-90, “Standard Test Method for Radionuclides

of Radium in Water”,” approved 1990.

ASTM Method D2907-91, “Standard Test Methods for

Microquantities of Uranium in Water by Fluorometry”,” “Test Method

A--Direct Fluorometric” & “Test Method B—Extraction”,” approved

June 15, 1991.

ASTM Method D2972-93 B or C, “Standard Test Methods for

Arsenic in Water”,” “Test Method B--Atomic Absorption, Hydride

Generation” & “Test Method C--Atomic Absorption, Graphite

Furnace”,” approved 1993.

ASTM Method D3223-91, “Standard Test Method for Total Mercury

in Water”,” approved September 23, 1991.

ASTM Method D3454-91, “Standard Test Method for Radium-226 in

Water”,” approved 1991.

ASTM Method D3559-90 D, “Standard Test Methods for Lead in

Water”,” “Test Method D--Atomic Absorption, Graphite Furnace”,”

approved August 6, 1990.

ASTM Method D3645-93 B, “Standard Test Methods for Beryllium in

Water”,” “Method B--Atomic Absorption, Graphite Furnace”,”

approved 1993.

ASTM Method D3649-91, “Standard Test Method for High-

Resolution Gamma-Ray Spectrometry of Water”,” approved 1991.

ASTM Method D3697-92, “Standard Test Method for Antimony in

Water”,” approved June 15, 1992.

ASTM Method D3859-93 A, “Standard Test Methods for Selenium in

Water”,” “Method A--Atomic Absorption, Hydride Method”,”

approved 1993.

ASTM Method D3867-90 A and B, “Standard Test Methods for

Nitrite-Nitrate in Water”,” “Test Method A--Automated Cadmium

Reduction” & “Test Method B--Manual Cadmium Reduction”,”

approved January 10, 1990.

ASTM Method D3972-90, “Standard Test Method for Isotopic

Uranium in Water by Radiochemistry”,” approved 1990.

ASTM Method D4107-91, “Standard Test Method for Tritium in

Drinking Water”,” approved 1991.

ASTM Method D4327-91, “Standard Test Method for Anions in

Water by Ion Chromatography”,” approved October 15, 1991.

ASTM Method D4785-88, “Standard Test Method for Low-Level

Iodine-131 in Water”,” approved 1988.

ASTM Method D5174-91, “Standard Test Method for Trace Uranium

in Water by Pulsed-Laser Phosphorimetry”,” approved 1991.

ASTM Method D 1253-86, “Standard Test Method for Residual

Chlorine in Water,” reapproved 1992.

ERDA Health and Safety Laboratory, New York, NY:

HASL Procedure Manual, HASL 300, 1973. See 40 CFR

141.25(b)(2) (1998).

Great Lakes Instruments, Inc., 8855 North 55th Street, Milwaukee, WI

53223:

GLI Method 2, “Turbidity”,” Nov. 2, 1992.

Millipore Corporation, Technical Services Department, 80 Ashby Road,

Milford, MA 01730 800-654-5476:

Colisure Presence/Absence Test for Detection and Identification of

Coliform Bacteria and Escherichia Coli in Drinking Water, February 28,

1994 (referred to as “Colisure Test”).

Millipore Corporation, Waters Chromatography Division, 34 Maple St.,

Milford, MA 01757 800-252-4752:

Waters Test Method for the Determination of Nitrite/Nitrate in Water

Using Single Column Ion Chromatography, Method B-1011 (referred

to as “Waters Method B-1011”).

NCRP. National Council on Radiation Protection, 7910 Woodmont Ave.,

Bethesda, MD 301-657-2652:

“Maximum Permissible Body Burdens and Maximum Permissible

Concentrations of Radionuclides in Air and in Water for Occupational

Exposure”,” NCRP Report Number 22, June 5, 1959.

NSF. National Sanitation Foundation International, 3475 Plymouth Road, PO

Box 130140, Ann Arbor, Michigan 48113-0140, 734-769-8010:

NSF Standard 61, section 9, November 1998.

NTIS. National Technical Information Service, U.S. Department of

Commerce, 5285 Port Royal Road, Springfield, VA 22161, 703- 487-4600

or 800-553-6847:

“Interim Radiochemical Methodology for Drinking Water”,” EPA

600/4-75-008 (revised), March 1976 (referred to as “USEPA Interim

Radiochemical Methods”). (Pages 1, 4, 6, 9, 13, 16, 24, 29, 34)

“Maximum Permissible Body Burdens and Maximum Permissible

Concentrations of Radionuclides in Air and in Water for Occupational

Exposure,” NBS (National Bureau of Standards) Handbook 69, as

amended August 1963, U.S. Department of Commerce.

Method 100.1, “Analytical Method for Determination of Asbestos

Fibers in Water”,” EPA-600/4-83-043, September, 1983, Doc. No.

PB83-260471 (referred to as “USEPA Asbestos Methods-100.1”).

Method 100.2, “Determination of Asbestos Structures over 10-mm in

Length in Drinking Water”,” EPA-600/4-83-043, June, 1994, Doc.

No. PB94-201902 (Referred to as “USEPA Asbestos Methods-

100.2”).

“Methods for Chemical Analysis of Water and Wastes”,” March, 1983,

Doc. No. PB84-128677 (referred to as “USEPA Inorganic

Methods”). (Methods 150.1, 150.2, and 245.2, which formerly

appeared in this reference, are available from USEPA EMSL.)

“Methods for the Determination of Metals in Environmental Samples”,”

June, 1991, Doc. No. PB91-231498 (referred to as “USEPA

Environmental Metals Methods”).

“Methods for the Determination of Organic Compounds in Drinking

Water”,” December, 1988, revised July, 1991, EPA-600/4-88/039

(referred to as “USEPA Organic Methods”). (For methods 502.2,

505, 507, 508, 508A, 515.1, and 531.1.)

“Methods for the Determination of Organic Compounds in Drinking

Water--Supplement I”,” July, 1990, EPA-600-4-90-020 (referred to

as “USEPA Organic Methods”). (For methods 506, 547, 550, 550.1,

and 551.)

“Methods for the Determination of Organic Compounds in Drinking

Water--Supplement II”,” August, 1992, EPA-600/R-92-129 (referred

to as “USEPA Organic Methods”). (For methods 515.2, 524.2,

548.1, 549.1, 552.1, and 555.)

“Prescribed Procedures for Measurement of Radioactivity in Drinking

Water”,” EPA 600/4-80-032, August 1980 (referred to as “USEPA

Radioactivity Methods”). (Methods 900, 901, 901.1, 902, 903, 903.1,

904, 905, 906, 908, 908.1)

“Procedures for Radiochemical Analysis of Nuclear Reactor Aqueous

Solutions”,” H.L. Krieger and S. Gold, EPA-R4-73-014, May, 1973,

Doc. No. PB222-154/7BA.

“Radiochemical Analytical Procedures for Analysis of Environmental

Samples”,” March, 1979, Doc. No. EMSL LV 053917 (referred to as

“USEPA Radiochemical Analyses”). (Pages 1, 19, 33, 65, 87, 92)

“Radiochemistry Procedures Manual”,” EPA-520/5-84-006,

December, 1987, Doc. No. PB-84-215581 (referred to as “USEPA

Radiochemistry Methods”). (Methods 00-01, 00-02, 00-07, H-02,

Ra-03, Ra-04, Ra-05, Sr-04)

“Technical Notes on Drinking Water Methods”,” EPA-600/R-94-173,

October, 1994, Doc. No. PB-104766 (referred to as “USEPA

Technical Notes”).

BOARD NOTE: USEPA made the following assertion with regard to

this reference at 40 CFR 141.23(k)(1) and 141.24(e) and (n)(11)

(1995): “This document contains other analytical test procedures and

approved analytical methods that remain available for compliance

monitoring until July 1, 1996.”

“Tetra- through Octa- Chlorinated Dioxins and Furans by Isotope

Dilution HRGC/HRMS”,” October, 1994, EPA-821-B-94-005

(referred to as “Dioxin and Furan Method 1613”).

New Jersey Department of Environment, Division of Environmental Quality,

Bureau of Radiation and Inorganic Analytical Services, 9 Ewing Street, Trenton,

NJ 08625:

“Determination of Radium 228 in Drinking Water”,” August 1990.

New York Department of Health, Radiological Sciences Institute, Center for

Laboratories and Research, Empire State Plaza, Albany, NY 12201:

“Determination of Ra-226 and Ra-228 (Ra-02)”,” January 1980,

Revised June 1982.

Technicon Industrial Systems, Tarrytown, NY 10591:

“Fluoride in Water and Wastewater”,” Industrial Method #129-71W,

December, 1972 (referred to as “Technicon Methods: Method #129-

71W”). See 40 CFR 141.23(k)(1), footnote 11 (1995).

“Fluoride in Water and Wastewater”,” #380-75WE, February, 1976

(referred to as “Technicon Methods: Method #380-75WE”). See 40

CFR 141.23(k)(1), footnote 11 (1995).

United States Department of Energy, available at the Environmental

Measurements Laboratory, U.S. Department of Energy, 376 Hudson Street,

New York, NY 10014-3621:

“EML Procedures Manual”,” 27th Edition, Volume 1, 1990.

United States Environmental Protection Agency, EMSL, Cincinnati, OH 45268

513-569-7586:

“Interim Radiochemical Methodology for Drinking Water”,” EPA-

600/4-75-008 (referred to as “Radiochemical Methods”). (Revised)

March, 1976.

“Methods for the Determination of Organic Compounds in Finished

Drinking Water and Raw Source Water” (referred to as “USEPA

Organic Methods”). (For methods 504.1, 508.1, and 525.2 only).

See NTIS.

“Procedures for Radiochemical Analysis of Nuclear Reactor Aqueous

Solutions”. See NTIS.

USEPA, Science and Technology Branch, Criteria and Standards Division,

Office of Drinking Water, Washington D.C. 20460:

“Guidance Manual for Compliance with the Filtration and Disinfection

Requirements for Public Water Systems using Surface Water

Sources”,” October, 1989.

USGS. Books and Open-File Reports Section, United States Geological

Survey, Federal Center, Box 25425, Denver, CO 80225-0425:

Methods available upon request by method number from “Methods of

Analysis by the U.S. Geological Survey National Water Quality

Laboratory--Determination of Inorganic and Organic Constituents in

Water and Fluvial Sediments”,” Open File Report 93-125 or Book 5,

Chapter A-1, “Methods for Determination of Inorganic Substances in

Water and Fluvial Sediments”,” 3d ed., Open-File Report 85-495,

1989, as appropriate (referred to as “USGS Methods”).

I-1030-85

I-1062-85

I-1601-85

I-1700-85

I-2598-85

I-2601-90

I-2700-85

I-3300-85

Methods available upon request by method number from “Methods for

Determination of Radioactive Substances in Water and Fluvial

Sediments”,” Chapter A5 in Book 5 of “Techniques of Water-

Resources Investigations of the United States Geological Survey”,”

1997.

R-1110-76

R-1111-76

R-1120-76

R-1140-76

R-1141-76

R-1142-76

R-1160-76

R-1171-76

R-1180-76

R-1181-76

R-1182-76

The Board incorporates the following federal regulations by reference:

40 CFR 136, Appendix B and C (1998) (2000).

This Part incorporates no later amendments or editions.

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

Section 611.110

Special Exception Permits

Unless otherwise specified, each Agency determination in this Part is to be made by

way of a written permit pursuant to Section 39(a) of the Act. Such permit is titled a

“special exception” permit (“SEP”).

No person shall may cause or allow the violation of any condition of a SEP.

The supplier may appeal the denial of or the conditions of a SEP to the Board pursuant

to Section 40 of the Act.

A SEP may be initiated either:

By an application filed by the supplier; or

By the Agency, when authorized by Board regulations.

BOARD NOTE: The Board does not intend to mandate by any provision of

this Part that the Agency exercise its discretion and initiate a SEP pursuant to

subsection (d)(2) above of this Section. Rather, the Board intends to clarify by

this subsection that the Agency may opt to initiate a SEP without receiving a

request from the supplier.

The Agency shall must evaluate a request for a SEP from the monitoring requirements of

Section 611.601, 611.602, or 611.603 (inorganic chemical contaminants, excluding the

Section 611.603 monitoring frequency requirements for cyanide); Section 611.646(e)

and (f) (Phase I, Phase II, and Phase V VOCs); Section 611.646(d), only as to initial

monitoring for 1,2,4-trichlorobenzene; Section 611.648(d) (for Phase II, Phase IIB,

and Phase V SOCs) or Section 611.510 (for unregulated organic contaminants) on the

basis of knowledge of previous use (including transport, storage, or disposal) of the

contaminant in the watershed or zone of influence of the system, as determined pursuant

to 35 Ill. Adm. Code 671:

BOARD NOTE: The Agency shall must grant a SEP from the Section 611.603

monitoring frequency requirements for cyanide only on the basis of subsection (g) below

of this Section, not on the basis of this subsection.

If the Agency determines that there was no prior use of the contaminant, it shall

must grant the SEP, or

If the contaminant was previously used or the previous use was unknown, the

Agency shall must consider the following factors:

Previous analytical results;

The proximity of the system to any possible point source of

contamination (including spills or leaks at or near a water treatment

facility; at manufacturing, distribution, or storage facilities; from

hazardous and municipal waste land fills; or from waste handling or

treatment facilities) or non-point source of contamination (including the

use of pesticides and other land application uses of the contaminant);

The environmental persistence and transport of the contaminant;

How well the water source is protected against contamination, including

whether it is a SWS or a GWS:

A GWS must consider well depth, soil type, well casing

integrity, and wellhead protection; and

ii)

A SWS must consider watershed protection;

For Phase II, Phase IIB, and Phase V SOCs and unregulated organic

contaminants (pursuant to Section 611.631 or 611.648):

Elevated nitrate levels at the water source; and

ii)

The use of PCBs in equipment used in the production, storage,

or distribution of water (including pumps, transformers, etc.);

and

For Phase I, Phase II, and Phase V VOCs (pursuant to Section

611.646): the number of persons served by the PWS and the proximity

of a smaller system to a larger one.

If a supplier refuses to provide any necessary additional information requested by the

Agency, or if a supplier delivers any necessary information late in the Agency’s

deliberations on a request, the Agency may deny the requested SEP or grant the SEP

with conditions within the time allowed by law.

The Agency shall must grant a supplier a SEP that allows it to discontinue monitoring for

cyanide if it determines that the supplier’s water is not vulnerable due to a lack of any

industrial source of cyanide.

BOARD NOTE: Subsection (e) above of this Section is derived from 40 CFR

141.24(f)(8) and (h)(6) (1994) (2000). Subsection (f) above of this Section is derived

from 40 CFR 141.82(d)(2), and 141.83(b)(2) (1994) (2000). Subsection (g) is

derived from 40 CFR 141.23(c)(2) (1994) (2000). U.S. EPA has reserved the

discretion, at 40 CFR 142.18 (1994) (2000), to review and nullify Agency

determinations of the types made pursuant to Sections 611.510, 611.602, 611.603,

611.646, and 611.648 and the discretion, at 40 CFR 141.82(i), 141.83(b)(7), and

142.19 (1994) (2000), to establish federal standards for any supplier, superseding any

Agency determination made pursuant to Sections 611.352(d), 611.352(f),

611.353(b)(2), and 611.353(b)(4).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

Section 611.130

Special Requirements for Certain Variances and Adjusted Standards

Relief from the TTHM MCL.

In granting any variance or adjusted standard to a supplier that is a CWS that

which adds a disinfectant at any part of treatment and which provides water to

10,000 or more persons on a regular basis from the maximum contaminant level

for TTHM listed in Section 611.310(c), the Board will require application of the

best available technology (BAT) identified at subsection (a)(4) below of this

Section for that constituent as a condition to the relief, unless the supplier has

demonstrated through comprehensive engineering assessments that application

of BAT is not technically appropriate and technically feasible for that system, or

it that the application would only result in a marginal reduction in TTHM for that

supplier.

The Board will require the following as a condition for relief from the TTHM

MCL where it does not require the application of BAT:

That the supplier continue to investigate the following methods as an

alternative means of significantly reducing the level of TTHM, according

to a definite schedule:

The introduction of off-line water storage for THM precursor

reduction;

ii)

aeration Aeration for TTHM reduction, where geography and

climate allow;

iii)

The introduction of clarification, where not presently practiced;

iv)

The use of alternative sources of raw water; and

The use of ozone as an alternative or supplemental disinfectant

or oxidant, and

That the supplier report results of that investigation to the Agency.

The Agency shall must petition the Board to reconsider or modify a variance or

adjusted standard, pursuant to Subpart I of 35 Ill. Adm. Code 101.Subpart K,

if it determines that an alternative method identified by the supplier pursuant to

subsection (a)(2) above of this Section is technically feasible and would result in

a significant reduction in TTHM.

Best available technology for TTHM reduction is as follows:

The use of chloramines as an alternative or supplemental disinfectant,

The use of chlorine dioxide as an alternative or supplemental

disinfectant, or

improved Improved existing clarification for THM precursor reduction.

BOARD NOTE: Derived Subsection (a) derived from 40 CFR 142.60 (1994)

(2000). The restrictions of this subsection do not apply to suppliers regulated for

TTHM as an additional state requirement. See the Board Note to Section 611.301(c).

Relief from the fluoride MCL.

In granting any variance or adjusted standard to a supplier that is a CWS from

the maximum contaminant level for fluoride listed in Section 611.301(b), the

Board will require application of the best available technology (BAT) identified

at subsection (b)(4) below of this Section for that constituent as a condition to

the relief, unless the supplier has demonstrated through comprehensive

engineering assessments that application of BAT is not technically appropriate

and technically feasible for that supplier.

The Board will require the following as a condition for relief from the fluoride

MCL where it does not require the application of BAT:

That the supplier continue to investigate the following methods as an

alternative means of significantly reducing the level of fluoride, according

to a definite schedule:

A modification of lime softening;

ii)

alum Alum coagulation;

iii)

electrodialysisElectrodialysis;

iv)

anion Anion exchange resins;

well Well field management;

vi)

The use of alternative sources of raw water; and

vii)

regionalizationRegionalization, and

That the supplier report results of that investigation to the Agency.

The Agency shall must petition the Board to reconsider or modify a variance or

adjusted standard, pursuant to Subpart I of 35 Ill. Adm. Code 101.Subpart K,

if it determines that an alternative method identified by the supplier pursuant to

subsection (b)(2) above of this Section is technically feasible and would result in

a significant reduction in fluoride.

Best available technology for fluoride reduction is as follows:

activated Activated alumina absorption centrally applied, and

reverse Reverse osmosis centrally applied.

BOARD NOTE: Derived Subsection (b) derived from 40 CFR 142.61 (1994)

(2000).

Relief from an inorganic chemical contaminant, VOC, or SOC MCL.

In granting to a supplier that is a CWS or NTNCWS any variance or adjusted

standard from the maximum contaminant levels for any VOC or SOC, listed in

Section 611.311(a) or (c), or for any inorganic chemical contaminant, listed in

Section 611.301, the supplier must have first applied the best available

technology (BAT) identified at Section 611.311(b) (VOCs and SOCs) or

Section 611.301(c) (inorganic chemical contaminants) for that constituent,

unless the supplier has demonstrated through comprehensive engineering

assessments that application of BAT would achieve only a minimal and

insignificant reduction in the level of contaminant.

BOARD NOTE: USEPA lists BAT for each SOC and VOC at 40 CFR

142.62(a) (1995) (2000), for the purposes of variances and exemptions

(adjusted standards). That list is identical to the list at 40 CFR 141.61(b)

(1995) (2000).

The Board may require any of the following as a condition for relief from a

MCL listed in Section 611.301 or 611.311:

That the supplier continue to investigate alternative means of compliance

according to a definite schedule, and

That the supplier report results of that investigation to the Agency.

The Agency shall must petition the Board to reconsider or modify a variance or

adjusted standard, pursuant to Subpart I of 35 Ill. Adm. Code 101.Subpart K,

if it determines that an alternative method identified by the supplier pursuant to

subsection (c)(2) above of this Section is technically feasible.

BOARD NOTE: Derived Subsection (c) derived from 40 CFR 142.62(a) through (e)

(1994) (2000).

Conditions requiring use of bottled water or point-of-use or point-of-entry devices. In

granting any variance or adjusted standard from the maximum contaminant levels for

organic and inorganic chemicals or an adjusted standard from the treatment technique

for lead and copper, the Board may impose certain conditions requiring the use of

bottled water, point-of-entry devices, or point-of-use devices to avoid an unreasonable

risk to health, limited as provided in subsections (e) and (f) below of this Section.

Relief from an MCL. The Board may, when granting any variance or adjusted

standard from the MCL requirements of Sections 611.301 and 611.311,

impose a condition that requires a supplier to use bottled water, point-of-use

devices, point-of-entry devices or other means to avoid an unreasonable risk to

health.

Relief from corrosion control treatment. The Board may, when granting an

adjusted standard from the corrosion control treatment requirements for lead

and copper of Sections 611.351 and 611.352, impose a condition that requires

a supplier to use bottled water and point-of-use devices or other means, but not

point-of-entry devices, to avoid an unreasonable risk to health.

Relief from source water treatment or service line replacement. The Board

may, when granting an exemption from the source water treatment and lead

service line replacement requirements for lead and copper under Sections

611.353 or 611.354, impose a condition that requires a supplier to use point-

of-entry devices to avoid an unreasonable risk to health.

BOARD NOTE: Derived Subsection (d) derived from 40 CFR 142.62(f) (1994)

(2000).

Use of bottled water. Suppliers that propose to use or use bottled water as a condition

for receiving a variance or an adjusted standard from the requirements of Section

611.301 or Section 611.311, or an adjusted standard from the requirements of

Sections 611.351 through 611.354 must meet the requirements of either subsections

(e)(1), (e)(2), (e)(3), and (e)(6) or (e)(4), (e)(5) and (e)(6) below of this Section:

The supplier must develop a monitoring program for Board approval that

provides reasonable assurances that the bottled water meets all MCLs of

Sections 611.301 and 611.311 and submit a description of this program as part

of its petition. The proposed program must describe how the supplier will

comply with each requirement of this subsection.

The supplier must monitor representative samples of the bottled water for all

contaminants regulated under Sections 611.301 and 611.311 during the first

three-month period that it supplies the bottled water to the public, and annually

thereafter.

The supplier shall must annually provide the results of the monitoring program to

the Agency.

The supplier must receive a certification from the bottled water company as to

each of the following:

that the bottled water supplied has been taken from an approved source

of bottled water, as such is defined in Section 611.101;

that the approved source of bottled water has conducted monitoring in

accordance with 21 CFR 129.80(g)(1) through (3);

and that the bottled water does not exceed any MCLs or quality limits

as set out in 21 CFR 103.35, 110, and 129.

The supplier shall must provide the certification required by subsection (e)(4)

above of this Section to the Agency during the first quarter after it begins

supplying bottled water and annually thereafter.

The supplier shall must assure the provision of sufficient quantities of bottled

water to every affected person supplied by the supplier via door-to-door

bottled water delivery.

BOARD NOTE: Derived Subsection (e) derived from 40 CFR 142.62(g) (1994)

(2000).

Use of point-of-entry devices. Before the Board grants any PWS a variance or

adjusted standard from any NPDWR that includes a condition requiring the use of a

point-of-entry device, the supplier must demonstrate to the Board each of the following:

that That the supplier will operate and maintain the device;

that That the device provides health protection equivalent to that provided by

central treatment;

that That the supplier will maintain the microbiological safety of the water at all

times;

that That the supplier has established standards for performance, conducted a

rigorous engineering design review, and field tested the device;

that That the operation and maintenance of the device will account for any

potential for increased concentrations of heterotrophic bacteria resulting through

the use of activated carbon, by backwashing, post-contactor disinfection, and

heterotrophic plate count monitoring;

that That buildings connected to the supplier's distribution system have sufficient

devices properly installed, maintained, and monitored to assure that all

consumers are protected; and

that That the use of the device will not cause increased corrosion of lead and

copper bearing materials located between the device and the tap that could

increase contaminant levels at the tap.

BOARD NOTE: Derived Subsection (f) derived from 40 CFR 142.62(h) (1994)

(2000).

Relief from the maximum contaminant levels for radionuclides (effective December 8,

2003).

Relief from the maximum contaminant levels for combined radium-226 and

radium-228, uranium, gross alpha particle activity (excluding Radon and

Uranium), and beta particle and photon radioactivity.

Section 611.330(g) sets forth what USEPA has identified as the best

available technology (BAT), treatment techniques, or other means

available for achieving compliance with the maximum contaminant levels

for the radionuclides listed in Section 611.330(b), (c), (d), and (e), for

the purposes of issuing variances and exemptions.

In addition to the technologies listed in Section 611.330(g), Section

611.330(h) sets forth what USEPA has identified as the BAT,

treatment techniques, or other means available for achieving compliance

with the maximum contaminant levels for the radionuclides listed in

Section 611.330(b), (c), (d), and (e), for the purposes of issuing

variances and exemptions to small drinking water systems, defined here

as those serving 10,000 persons or fewer, as shown in the second table

set forth at Section 611.330(h)..

The Board will require a CWS supplier to install and use any treatment

technology identified in Section 611.330(g), or in the case of small water

systems (those serving 10,000 persons or fewer), listed in Section 611.330(h),

as a condition for granting a variance except as provided in subsection (a)(3) of

this Section. If, after the system's installation of the treatment technology, the

system cannot meet the MCL, that system will be eligible for a variance.

If a CWS supplier can demonstrate through comprehensive engineering

assessments, which may include pilot plant studies, that the treatment

technologies identified in this Section would only achieve a de minimus reduction

in the contaminant level, the Board may issue a schedule of compliance that

requires the system being granted the variance to examine other treatment

technologies as a condition of obtaining the variance.

If the Agency determines that a treatment technology identified under subsection

(a)(3) of this Section is technically feasible, it may request that the Board require

the supplier to install and use that treatment technology in connection with a

compliance schedule issued pursuant to Section 36 of the Act. The Agency's

determination must be based upon studies by the system and other relevant

information.

The Board may require a community water system to use bottled water, point-

of-use devices, point-of-entry devices, or other means as a condition of granting

relief equivalent to a federal Section 1415 variance or a Section 1416

exemption from the requirements of Section 611.330, to avoid an unreasonable

risk to health.

A CWS supplier that uses bottled water as a condition for receiving relief

equivalent to a federal Section 1415 variance or a Section 1416 exemption

from the requirements of Section 611.330 must meet the requirements specified

in either subsections (e)(1) through (e)(3) or (e)(4) through (e)(6) of this

Section.

A CWS supplier that uses point-of-use or point-of-entry devices as a condition

for obtaining relief equivalent to a federal Section 1415 variance or a Section

1416 exemption from the radionuclides NPDWRs must meet the conditions in

subsections (g)(1) through (g)(6) of this Section.

BOARD NOTE: Subsection (g) derived from 40 CFR 142.65, as added at 65 Fed.

Reg. 76751 (December 7, 2000), effective December 8, 2003.

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

SUBPART B: FILTRATION AND DISINFECTION

Section 611.261

Unfiltered PWSs: Reporting and Recordkeeping

A supplier that uses a surface water source and does not provide filtration treatment must report

monthly to the Agency the information specified in this Section beginning December 31, 1990, unless

the Agency has determined that filtration is required, in which case the Agency must, by special

exception permit, specify alternative reporting requirements, as appropriate, until filtration is in place. A

supplier that uses a groundwater source under the direct influence of surface water and does not

provide filtration treatment must report monthly to the Agency the information specified in this Section

beginning December 31, 1990, or six months after the Agency determines that the groundwater source

is under the direct influence of surface water, whichever is later, unless the Agency has determined that

filtration is required, in which case the Agency must, by special exception permit, specify alternative

reporting requirements, as appropriate, until filtration is in place.

Source water quality information must be reported to the Agency within ten days after

the end of each month the system serves water to the public. Information that must be

reported includes:

The cumulative number of months for which results are reported.

The number of fecal or total coliform samples, whichever are analyzed during

the month (if a system monitors for both, only fecal coliforms must be reported),

the dates of sample collection, and the dates when the turbidity level exceeded

1 NTU.

The number of samples during the month that had equal to or fewer than 20/100

ml fecal coliforms or equal to or fewer than 100/100 ml total coliforms,

whichever are analyzed.

The cumulative number of fecal or total coliform samples, whichever are

analyzed, during the previous six months the system served water to the public.

The cumulative number of samples that had equal to or fewer than 20/100 ml

fecal coliforms or equal to or fewer than 100/100 ml total coliforms, whichever

are analyzed, during the previous six months the system served water to the

public.

The percentage of samples that had equal to or fewer than 20/100 ml fecal

coliforms or equal to or fewer than 100/100 ml total coliforms, whichever are

analyzed, during the previous six months the system served water to the public.

The maximum turbidity level measured during the month, the dates of

occurrence for any measurements which that exceeded 5 NTU and the dates

the occurrences were reported to the Agency.

For the first 12 months of recordkeeping, the dates and cumulative number of

events during which the turbidity exceeded 5 NTU, and after one year of

recordkeeping for turbidity measurements, the dates and cumulative number of

events during which the turbidity exceeded 5 NTU in the previous 12 months

the system served water to the public.

For the first 120 months of recordkeeping, the dates and cumulative number of

events during which the turbidity exceeded 5 NTU, and after ten years of

recordkeeping for turbidity measurements, the dates and cumulative number of

events during which the turbidity exceeded 5 NTU in the previous 120 months

the system served water to the public.

Disinfection information specified in Section 611.532 must be reported to the Agency

within ten days after the end of each month the system serves water to the public.

Information that must be reported includes:

For each day, the lowest measurement of RDC in mg/L in water entering the

distribution system.

The date and duration of each period when the RDC in water entering the

distribution system fell below 0.2 mg/L and when the Agency was notified of the

occurrence.

The daily RDCs (in mg/L) and disinfectant contact times (in minutes) used for

calculating the CT values.

If chlorine is used, the daily measurements of pH of disinfected water following

each point of chlorine disinfection.

The daily measurements of water temperature in degrees C following each point

of disinfection.

The daily CTcalc and Ai values for each disinfectant measurement or sequence

and the sum of all Ai values (B) before or at the first customer.

The daily determination of whether disinfection achieves adequate Giardia cyst

and virus inactivation, i.e., whether Ai is at least 1.0 or, where disinfectants

other than chlorine are used, other indicator conditions that the Agency,

pursuant to Section 611.241(a)(1), determines are appropriate, are met.

The following information on the samples taken in the distribution system in

conjunction with total coliform monitoring pursuant to Section 611.240 through

611.242:

Number of instances where the RDC is measured;

Number of instances where the RDC is not measured but HPC is

measured;

Number of instances where the RDC is measured but not detected and

no HPC is measured;

Number of instances where no RDC is detected and where HPC is

greater than 500/ml;

Number of instances where the RDC is not measured and HPC is

greater than 500/ml;

For the current and previous month the system served water to the

public, the value of “V” in the following formula:

(

)

(

)

V =

100

c + d + e

a + b

where:

a =

Value in subsection (b)(8)(A) of this Section

b =

Value in subsection (b)(8)(B) of this Section

c =

Value in subsection (b)(8)(C) of this Section

d =

Value in subsection (b)(8)(D) of this Section

e =

Value in subsection (b)(8)(E) of this Section

The requirements of subsections (b)(8)(A) through (b)(8)(F) of this

Section do not apply if the Agency determines, pursuant to Section

611.213, that a system has no means for having a sample analyzed for

HPC.

A system need not report the data listed in subsections (b)(1), and (b)(3)

through (b)(6) of this Section, if all data listed in subsections (b)(1) through

(b)(8) of this Section remain on file at the system, and the Agency determines,

by special exception permit, that:

The system has submitted to the Agency all the information required by

subsections (b)(1) through (b)(8) of this Section for at least 12 months;

and

The Agency has determined that the system is not required to provide

filtration treatment.

By October 10 of each year, each system must provide to the Agency a report which

that summarizes its compliance with all watershed control program requirements

specified in Section 611.232(b).

By October 10 of each year, each system must provide to the Agency a report on the

on-site inspection conducted during that year pursuant to Section 611.232(c), unless the

on-site inspection was conducted by the Agency. If the inspection was conducted by

the Agency, the Agency must provide a copy of its report to the supplier.

Reporting health threats.

Each system, upon discovering that a waterborne disease outbreak potentially

attributable to that water system has occurred, must report that occurrence to

the Agency as soon as possible, but no later than by the end of the next

business day.

If at any time the turbidity exceeds 5 NTU, the system must consult with the

Agency as soon as practical, but no later than 24 hours after the exceedance

exceedence is known, in accordance with the public notification requirements

under Section 611.903(b)(3).

If at any time the RDC falls below 0.2 mg/L in the water entering the distribution

system, the system must notify the Agency as soon as possible, but no later than

by the end of the next business day. The system also must notify the Agency by

the end of the next business day whether or not the RDC was restored to at

least 0.2 mg/L within four hours.

BOARD NOTE: Derived from 40 CFR 141.75(a) (1999), as amended at 65 Fed. Reg. 26022 (May

4, 2000) (2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

Section 611.262

Filtered PWSs: Reporting and Recordkeeping

A supplier that uses a surface water source or a groundwater source under the direct influence of

surface water and provides filtration treatment must report monthly to the Agency the information

specified in this Section.

Turbidity measurements as required by Section 611.533(a) must be reported within ten

days after the end of each month the supplier serves water to the public. Information

that must be reported includes:

The total number of filtered water turbidity measurements taken during the

month.

The number and percentage of filtered water turbidity measurements taken

during the month which that are less than or equal to the turbidity limits specified

in Section 611.250 for the filtration technology being used.

The date and value of any turbidity measurements taken during the month which

that exceed 5 NTU.

Disinfection information specified in Section 611.533 must be reported to the Agency

within ten days after the end of each month the supplier serves water to the public.

Information that must be reported includes:

For each day, the lowest measurement of RDC in mg/L in water entering the

distribution system.

The date and duration of each period when the RDC in water entering the

distribution system fell below 0.2 mg/L and when the Agency was notified of the

occurrence.

The following information on the samples taken in the distribution system in

conjunction with total coliform monitoring pursuant to Sections 611.240 through

611.242:

Number of instances where the RDC is measured;

Number of instances where the RDC is not measured but HPC is

measured;

Number of instances where the RDC is measured but not detected and

no HPC is measured;

Number of instances where no RDC is detected and where HPC is

greater than 500/ml;

Number of instances where the RDC is not measured and HPC is

greater than 500/ml;

For the current and previous month the supplier serves water to the

public,the value of “V” in the following formula:

(

)

(

)

V =

100 c + d

+ e

where:

a =

Value in subsection (b)(3)(A) of this Section

b =

Value in subsection (b)(3)(B) of this Section

c =

Value in subsection (b)(3)(C) of this Section

d =

Value in subsection (b)(3)(D) of this Section

e =

Value in subsection (b)(3)(E) of this Section

Subsections (b)(3)(A) through (b)(3)(F) of this Section do not apply if

the Agency determines, pursuant to Section 611.213, that a supplier

has no means for having a sample analyzed for HPC.

Reporting health threats.

Each supplier, upon discovering that a waterborne disease outbreak potentially

attributable to that water system has occurred, must report that occurrence to

the Agency as soon as possible, but no later than by the end of the next

business day.

If at any time the turbidity exceeds 5 NTU, the supplier must consult with the

Agency as soon as practical, but no later than 24 hours after the exceedance

exceedence is known, in accordance with the public notification requirements

under Section 611.903(b)(3).

If at any time the residual falls below 0.2 mg/L in the water entering the

distribution system, the supplier must notify the Agency as soon as possible, but

no later than by the end of the next business day. The supplier also must notify

the Agency by the end of the next business day whether or not the residual was

restored to at least 0.2 mg/L within four hours.

BOARD NOTE: Derived from 40 CFR 141.75(b) (1999), as amended at 65 Fed. Reg. 26022 (May

4, 2000) (2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

SUBPART F: MAXIMUM CONTAMINANT LEVELS (MCLs) AND

MAXIMUM RESIDUAL DISINFECTANT LEVELS (MRDLs)

Section 611.301

Revised MCLs for Inorganic Chemicals

This subsection corresponds with 40 CFR 141.62(a), reserved by USEPA. This

statement maintains structural consistency with USEPA rules.

The MCLs in the following table apply to CWSs. Except for fluoride, the MCLs also

apply to NTNCWSs. The MCLs for nitrate, nitrite, and total nitrate and nitrite also

apply to transient non-CWSs.

Contaminant

MCL

Units

Antimony

0.006

mg/L

Asbestos

MFL

Barium

mg/L

Beryllium

0.004

mg/L

Cadmium

0.005

mg/L

Chromium

0.1

mg/L

Cyanide (as free CN

)

0.2

mg/L

Fluoride

4.0

mg/L

Mercury

0.002

mg/L

Nitrate (as N)

10.

mg/L

Nitrite (as N)

mg/L

Total Nitrate and Nitrite(as N)

10.

mg/L

Selenium

0.05

mg/L

Thallium

0.002

mg/L

BOARD NOTE: See Section 611.300(d) for an elevated nitrate level for non-

CWSs. USEPA removed and reserved the MCL for nickel on June 29, 1995,

at 60 Fed. Reg. 33932, as a result of a judicial order in Nickel Development

Institute v. EPA, No. 92-1407, and Specialty Steel Industry of the U.S. v.

Browner, No. 92-1410 (D.C. Cir. Feb. 23 & Mar. 6, 1995), while retaining

the contaminant, analytical methodology, and detection limit listings for this

contaminant.

USEPA has identified the following as BAT for achieving compliance with the MCL for

the inorganic contaminants identified in subsection (b) above of this Section, except for

fluoride:

Contaminant

BAT(s)

Antimony

C/F

Asbestos

C/F

DDF

Barium

LIME

Beryllium

C/F

LIME

Cadmium

C/F

LIME

Chromium

C/F

LIME, BAT for Cr(III) only

Cyanide

Mercury

C/F, BAT only if influent Hg concentrations less than or equal

to (

) 10

g/L

GAC

LIME, BAT only if influent Hg concentrations

g/L

RO, BAT only if influent Hg concentrations

g/L

Nickel

LIME

Nitrate

Nitrite

Selenium

AAL

C/F, BAT for Se(IV) only

LIME

Thallium

AAL

Abbreviations

AAL

Activated alumina

C/F

Coagulation/filtration

DDF

Direct and diatomite filtration

GAC

Granular activated carbon

Ion exchange

LIME

Lime softening

Reverse osmosis

Corrosion control

Electrodialysis

Oxidation (chlorine)

Ultraviolet irradiation

BOARD NOTE: Derived from 40 CFR 141.62 (1995) (2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

SUBPART F: MAXIMUM CONTAMINANT LEVELS (MCLs) AND

MAXIMUM RESIDUAL DISINFECTANT LEVELS (MRDLs)

Section 611.330

Radium and Gross Alpha Particle ActivityMaximum Contaminant Levels for

Radionuclides

The following are the MCLs for radium-226, radium-228 and gross alpha particle radioactivity:

Combined radium-226 and radium-228 - 5 pCi/L.

Gross alpha particle activity (including radium-226 but excluding radon and uranium) -

15 pCi/L.

This subsection corresponds with 40 CFR 141.66(a), marked reserved by USEPA.

This statement maintains structural consistency with USEPA rules.

MCL for combined radium-226 and –228. The maximum contaminant level for

combined radium-226 and radium-228 is 5 pCi/L. The combined radium-226 and

radium-228 value is determined by the addition of the results of the analysis for radium-

226 and the analysis for radium-228.

MCL for gross alpha particle activity (excluding radon and uranium). The maximum

contaminant level for gross alpha particle activity (including radium-226 but excluding

radon and uranium) is 15 pCi/L.

Effective December 8, 2003, MCL for beta particle and photon radioactivity.

The average annual concentration of beta particle and photon radioactivity from

man-made radionuclides in drinking water must not produce an annual dose

equivalent to the total body or any internal organ greater than 4 millirem/year

(mrem/year).

Except for the radionuclides listed in the following table, the concentration of

man-made radionuclides causing 4 mrem total body or organ dose equivalents

must be calculated on the basis of two liters per day drinking water intake, using

the 168-hour data list set forth in “Maximum Permissible Body Burdens and

Maximum Permissible Concentrations of Radionuclides in Air and in Water for

Occupational Exposure,” incorporated by reference in Section 611.102,

available form the NTIS. If two or more radionuclides are present, the sum of

their annual dose equivalent to the total body or to any organ must not exceed 4

mrem/year.

Average Annual Concentrations Assumed to Produce a Total Body or Organ

Dose of 4 mrem/yr

Radionuclide

Critical organ

pCi per liter

1. Tritium

Total body

20,000

2. Strontium-90

Bone Marrow

MCL for uranium. Effective December 8, 2003, the maximum contaminant level for

uranium is 30

g/L.

Compliance dates for combined radium-226 and -228, gross alpha particle activity,

gross beta particle and photon radioactivity, and uranium: Effective December 8, 2003,

a CWS supplier must comply with the MCLs listed in subsections (b) through (e) of this

Section beginning December 8, 2003, and compliance must be determined in

accordance with the requirements of Subpart Q of this Part. Compliance with reporting

requirements for the radionuclides under Appendices A, G, and H of this Part is

required before December 8, 2003.

Best available technologies (BATs) for radionuclides. USEPA has identified the

technologies indicated in the following table as the best technology available (BAT) for

achieving compliance with the MCLs for combined radium-226 and -228, uranium,

gross alpha particle activity, and beta particle and photon radioactivity.

BAT for Combined Radium-226 and Radium-228, Uranium, Gross Alpha Particle

Activity, and Beta Particle and Photon Radioactivity

Contaminant

BAT

Combined radium-226 and radium-

228

Ion exchange, reverse osmosis, lime

softening.

Uranium

Ion exchange, reverse osmosis, lime

softening, coagulation/filtration.

Gross alpha particle activity

(excluding Radon and Uranium).

Reverse osmosis.

Beta particle and photon radioactivity.

Ion exchange, reverse osmosis.

Small systems compliance technologies list for radionuclides.

List of Small Systems Compliance Technologies for Radionuclides and Limitations to

Use

Unit technologies

Limitations (see

footnotes)

Operator skill level

required

Raw water quality

range and

considerations.

Ion exchange (IE)

(a)

Intermediate

All ground waters.

Point of use

(POU

) IE

(b)

Basic

All ground waters.

Reverse osmosis

(RO)

(c)

Advanced

Surface waters usually

require pre-filtration.

POU

(b)

Basic

Surface waters usually

require pre-filtration.

Lime softening

(d)

Advanced

All waters.

Green sand

filtration

(e)

Basic

Co-precipitation

with Barium

sulfate

(f)

Intermediate to

Advanced

Ground waters with

suitable water quality.

Electrodialysis/

electrodialysis

reversal.

Basic to Intermediate

All ground waters.

Pre-formed

hydrous

Manganese oxide

filtration.

(g)

Intermediate

All ground waters.

10. Activated alumina

(a), (h)

Advanced

All ground waters;

competing anion

concentrations may

affect regeneration

frequency.

11. Enhanced

coagulation/

filtration

(i)

Advanced

Can treat a wide

range of water

qualities.

National Research Council (NRC). “Safe Water from Every Tap: Improving

Water Service to Small Communities,” National Academy Press, Washington, D.C.

1997.

A POU, or “point-of-use” technology is a treatment device installed at a single tap

used for the purpose of reducing contaminants in drinking water at that one tap.

POU devices are typically installed at the kitchen tap. See the April 21, 2000

NODA for more details.

Limitations Footnotes: Technologies for Radionuclides:

The regeneration solution contains high concentrations of the contaminant ions.

Disposal options should be carefully considered before choosing this technology.

When POU devices are used for compliance, programs for long-term operation,

maintenance, and monitoring must be provided by water utility to ensure proper

performance.

Reject water disposal options should be carefully considered before choosing this

technology.

BOARD NOTE: In corresponding 40 CFR 141.66, Table C, footnote c states in

part as follows: “See other RO limitations described in the SWTR Compliance

Technologies Table.” Table C was based in significant part on “Table 13.—

Technologies for Radionuclides” that appears at 63 Fed. Reg. 42032 at 42043

(August 6, 1998), which refers to “Table 2.—SWTR Compliance Technology

Table: Filtration.” That Table 2 lists the limitations on RO as follows:

Blending (combining treated water with untreated raw water) cannot be

practiced at risk of increasing microbial concentrations in finished water.

Post-disinfection recommended as a safety measure and for residual

maintenance.

Post-treatment corrosion control will be needed prior to distribution.

63 Fed. Reg. at 42036.

The combination of variable source water quality and the complexity of the water

chemistry involved may make this technology too complex for small surface water

systems.

Removal efficiencies can vary depending on water quality.

This technology may be very limited in application to small systems. Since the

process requires static mixing, detention basins, and filtration, it is most applicable to

systems with sufficiently high sulfate levels that already have a suitable filtration

treatment train in place.

This technology is most applicable to small systems that already have filtration in

place.

Handling of chemicals required during regeneration and pH adjustment may be too

difficult for small systems without an adequately trained operator.

Assumes modification to a coagulation/filtration process already in place.

Compliance Technologies by System Size Category for Radionuclide NPDWR's

Compliance technologies

for system size categories

(population served)

Contaminant

25-500

501-3,300

3,300-10,000

Combined radium-226

and radium-228

1, 2, 3, 4, 5, 6,

7, 8, 9

1, 2, 3, 4, 5, 6,

7, 8, 9

1, 2, 3, 4, 5, 6,

7. 8, 9

Gross alpha particle

activity

3, 4

Beta particle activity and

photon activity

1, 2, 3, 4

Uranium

1, 2, 4, 10, 11

1, 2, 3, 4, 5, 10,

Note:

Numbers correspond to those technologies found listed in the table, “List of

Small Systems Compliance Technologies for Radionuclides and Limitations to Use,” set

forth above.

BOARD NOTE: Derived from 40 CFR 141.15 (1989) 141.66, as added at 65 Fed.

Reg. 76748 (December 7, 2000), effective December 8, 2003.

(Source: Former Section 611.330 repealed and new Section 611.330 adopted at 25 Ill. Reg.

________, effective ______________________)

Section 611.331

Beta Particle and Photon Radioactivity

The following provisions apply until December 8, 2003:

The average annual concentration of beta particle and photon radio-activity from man-

made radionuclides in drinking water must not produce an annual dose equivalent to the

total body or any internal organ greater than 4 mrem/year.

Except for the radionuclides listed below, the concentration of man-made radionuclides

causing 4 mrem total body or organ dose equivalents must be calculated on the basis of

a 2 liter per day drinking water intake using the 168 hour data listed in “Maximum

Permissible Body Burdens and Maximum Permissible Concentrations of Radionuclides

in Air and in Water for Occupational Exposure,” NCRP Report Number 22,

incorporated by reference in Section 611.102. If two or more radionuclides are

present, the sum of their annual dose equivalent to the total body or to any organ must

not exceed 4 mrem/year.

AVERAGE ANNUAL CONCENTRATIONS ASSUMED TO PRODUCE

A TOTAL BODY OR ORGAN DOSE OF 4 mrem/year

Radionuclide

Critical Organ

pCi/L

Tritium

Total body

20,000

Strontium-90

Bone marrow

BOARD NOTE: Derived from 40 CFR 141.16 (1989), as removed at 65

Fed. Reg. 76745 (December 7, 2000), effective December 8, 2003.

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

SUBPART G: LEAD AND COPPER

Section 611.350

General Requirements

Applicability and Scope

Applicability. The requirements of this Subpart constitute national primary

drinking water regulations for lead and copper. This Subpart applies to all

community water systems (CWSs) and non-transient, non-community water

systems (NTNCWSs).

Scope. This Subpart establishes a treatment technique that includes

requirements for corrosion control treatment, source water treatment, lead

service line replacement, and public education. These requirements are

triggered, in some cases, by lead and copper action levels measured in samples

collected at consumers’ taps.

Definitions. For the purposes of only this Subpart, the following terms shall must have

the following meanings:

“Action level” means that concentration of lead or copper in water computed

pursuant to subsection (c) below of this Section that determines, in some cases,

the treatment requirements of this Subpart which that a supplier must complete.

The action level for lead is 0.015 mg/L. The action level for copper is 1.3

mg/L.

“Corrosion inhibitor” means a substance capable of reducing the corrosivity of

water toward metal plumbing materials, especially lead and copper, by forming

a protective film on the interior surface of those materials.

“Effective corrosion inhibitor residual” means a concentration of inhibitor in the

drinking water sufficient to form a passivating film on the interior walls of a pipe.

“Exceed”,” as this term is applied to either the lead or the copper action level,

means that the 90th percentile level of the supplier’s samples collected during a

six-month monitoring period is greater than the action level for that contaminant.

“First draw sample” means a one-liter sample of tap water, collected in

accordance with Section 611.356(b)(2), that has been standing in plumbing

pipes for at least 6 six hours and which is collected without flushing the tap.

“Large system” means a water system that regularly serves water to more than

50,000 persons.

“Lead service line”, means a service line made of lead that connects the water

main to the building inlet, including any lead pigtail, gooseneck, or other fitting

that is connected to such lead line.

“Maximum permissible concentration” or “MPC” means that concentration of

lead or copper for finished water entering the supplier’s distribution system,

designated by the Agency by a SEP pursuant to Sections 611.110 and

611.353(b) that reflects the contaminant removal capability of the treatment

properly operated and maintained.

BOARD NOTE: Derived from 40 CFR 141.83(b)(4) (1994) (2000) (Section

611.353(b)(4)(B)).

“Medium-sized system” means a water system that regularly serves water to

more than 3,300 up to 50,000 or fewer persons.

“Meet”,” as this term is applied to either the lead or the copper action level,

means that the 90th percentile level of the supplier’s samples collected during a

six-month monitoring period is less than or equal to the action level for that

contaminant.

“Method detection limit” or “MDL” is as defined at Section 611.646(a). The

MDL for lead is 0.001 mg/L. The MDL for copper is 0.001 mg/L, or 0.020

mg/L by atomic absorption direct aspiration method.

BOARD NOTE: Derived from 40 CFR 141.89(a)(1)(iii) (1994) (2000).

“Monitoring period” means any of the six-month periods of time during which a

supplier must complete a cycle of monitoring under this Subpart.

BOARD NOTE: USEPA refers to these as “monitoring periods”.” The Board

uses “six-month monitoring period” to avoid confusion with “compliance

period”,” as used elsewhere in this Part and defined at Section 611.101.

“Multiple-family residence” means a building that is currently used as a multiple-

family residence, but not one that is also a “single-family structure”.”

“90th percentile level” means that concentration of lead or copper contaminant

exceeded by 10 ten percent or fewer of all samples collected during a six-

month monitoring period pursuant to Section 611.356 (i.e., that concentration

of contaminant greater than or equal to the results obtained from 90 percent of

the samples). The 90th percentile levels for copper and lead shall must be

determined pursuant to subsection (c)(3) below of this Section.

BOARD NOTE: Derived from 40 CFR 141.80(c) (1994) (2000).

“Optimal corrosion control treatment” means the corrosion control treatment

that minimizes the lead and copper concentrations at users’ taps while ensuring

that the treatment does not cause the water system to violate any national

primary drinking water regulations.

“Practical quantitation limit” or “PQL” means the lowest concentration of a

contaminant that a well-operated laboratory can reliably achieve within specified

limits of precision and accuracy during routine laboratory operating conditions.

The PQL for lead is 0.005 mg/L. The PQL for copper is 0.050 mg/L.

BOARD NOTE: Derived from 40 CFR 141.89(a)(1)(ii) and (a)(1)(iv) (1994)

(2000).

“Service line sample” means a one-liter sample of water, collected in

accordance with Section 611.356(b)(3), that has been standing for at least 6 six

hours in a service line.

“Single-family structure” means a building that was constructed as a single-

family residence and which is currently used as either a residence or a place of

business.

“Small system” means a water system that regularly serves water to 3,300 or

fewer persons.

BOARD NOTE: Derived from 40 CFR 141.2 (1994) (2000).

Lead and Copper Action Levels:

The lead action level is exceeded if the 90th percentile lead level is greater than

0.015 mg/L.

The copper action level is exceeded if the 90th percentile copper level is greater

than 1.3 mg/L.

Suppliers shall must compute the 90th percentile lead and copper levels as

follows:

List the results of all lead or copper samples taken during a six-month

monitoring period in ascending order, ranging from the sample with the

lowest concentration first to the sample with the highest concentration

last. Assign each sampling result a number, ascending by single integers

beginning with the number 1 for the sample with the lowest contaminant

level. The number assigned to the sample with the highest contaminant

level shall must be equal to the total number of samples taken.

Determine the number for the 90th percentile sample by multiplying the

total number of samples taken during the six-month monitoring period

by 0.9.

The contaminant concentration in the sample with the number yielded by

the calculation in subsection (c)(3)(B) above of this Section is the 90th

percentile contaminant level.

For suppliers that collect 5 five samples per six-month monitoring

period, the 90th percentile is computed by taking the average of the

highest and second highest concentrations.

Corrosion Control Treatment Requirements:

All suppliers shall must install and operate optimal corrosion control treatment.

Any supplier that complies with the applicable corrosion control treatment

requirements specified by the Agency pursuant to Sections 611.351 and

611.352 is deemed in compliance with the treatment requirement of subsection

(d)(1) above of this Section.

Source water treatment requirements. Any supplier whose system exceeds the lead or

copper action level shall must implement all applicable source water treatment

requirements specified by the Agency pursuant to Section 611.353.

Lead service line replacement requirements. Any supplier whose system exceeds the

lead action level after implementation of applicable corrosion control and source water

treatment requirements shall must complete the lead service line replacement

requirements contained in Section 611.354.

Public education requirements. Any supplier whose system exceeds the lead action

level shall must implement the public education requirements contained in Section

611.355.

Monitoring and analytical requirements. Suppliers shall must complete all tap water

monitoring for lead and copper, monitoring for water quality parameters, source water

monitoring for lead and copper, and analyses of the monitoring results under this

Subpart in compliance with Sections 611.356, 611.357, 611.358, and 611.359.

Reporting requirements. Suppliers shall must report to the Agency any information

required by the treatment provisions of this Subpart and Section 611.360.

Recordkeeping requirements. Suppliers shall must maintain records in accordance with

Section 611.361.

Violation of national primary drinking water regulations. Failure to comply with the

applicable requirements of this Subpart, including conditions imposed by the Agency by

special exception permit (SEP) pursuant to these provisions, shall must constitute a

violation of the national primary drinking water regulations for lead or copper.

BOARD NOTE: Derived from 40 CFR 141.80 (1994) (2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

Section 611.351

Applicability of Corrosion Control

Corrosion control required. Suppliers must complete the applicable corrosion control

treatment requirements described in Section 611.352 on or before the deadlines set

forth in this Section.

Large systems. Each large system supplier (one regularly serving more than

50,000 persons) must complete the corrosion control treatment steps specified

in subsection (d) of this Section, unless it is deemed to have optimized corrosion

control under subsection (b)(2) or (b)(3) of this Section.

Medium-sized and small systems. Each small system supplier (one regularly

serving 3,300 or fewer persons) and each medium-sized system (one regularly

serving more than 3,300 up to 50,000 persons) must complete the corrosion

control treatment steps specified in subsection (e) of this Section, unless it is

deemed to have optimized corrosion control under one of subsections (b)(1),

(b)(2), or (b)(3) of this Section.

Suppliers deemed to have optimized corrosion control. A supplier is deemed to have

optimized corrosion control, and is not required to complete the applicable corrosion

control treatment steps identified in this Section, if the supplier satisfies one of the

criteriaspecified in subsections (b)(1) through (b)(3) of this Section. Any such system

deemed to have optimized corrosion control under this subsection, and which has

treatment in place, must continue to operate and maintain optimal corrosion control

treatment and meet any requirements that the Agency determines are appropriate to

ensure optimal corrosion control treatment is maintained.

Small or medium-sized system meeting action levels. A small system or

medium-sized system supplier is deemed to have optimized corrosion control if

the system meets the lead and copper action levels during each of two

consecutive six-month monitoring periods with monitoring conducted in

accordance with Section 611.356.

SEP for equivalent activities to corrosion control. The Agency must, by a SEP

granted pursuant to Section 611.110, deem any supplier to have optimized

corrosion control treatment if it determines that the supplier has conducted

activities equivalent to the corrosion control steps applicable under this Section.

In making this determination, the Agency must specify the water quality control

parameters representing optimal corrosion control in accordance with Section

611.352(f). A water supplier that is deemed to have optimized corrosion

control under this subsection (b)(2) must operate in compliance with the

Agency-designated optimal water quality control parameters in accordance with

Section 611.352(g) and must continue to conduct lead and copper tap and

water quality parameter sampling in accordance with Sections 611.356(d)(3)

and 611.357(d), respectively. A supplier must provide the Agency with the

following information in order to support an Agency SEP determination under

this subsection (b)(2):

The results of all test samples collected for each of the water quality

parameters in Section 611.352(c)(3);

A report explaining the test methods the supplier used to evaluate the

corrosion control treatments listed in Section 611.352(c)(1), the results

of all tests conducted, and the basis for the supplier’s selection of

optimal corrosion control treatment;

A report explaining how the supplier has installed corrosion control and

how the supplier maintains it to insure minimal lead and copper

concentrations at consumer’s taps; and

The results of tap water samples collected in accordance with Section

611.356 at least once every six months for one year after corrosion

control has been installed.

Results less than practical quantitation level (PQL) for lead. Any supplier is

deemed to have optimized corrosion control if it submits results of tap water

monitoring conducted in accordance with Section 611.356 and source water

monitoring conducted in accordance with Section 611.358 that demonstrate

that for two consecutive six-month monitoring periods the difference between

the 90th percentile tap water lead level, computed pursuant to Section

611.350(c)(3), and the highest source water lead concentration is less than the

practical quantitation level for lead specified in Section 611.359(a)(1)(B)(i).

Those systems whose highest source water lead level is below the

method detection limit (MDL) may also be deemed to have optimized

corrosion control under this subsection (b) if the 90th percentile tap

water lead level is less than or equal to the PQL for lead for two

consecutive six-month monitoring periods.

Any water system deemed to have optimized corrosion control in

accordance with this subsection (b) must continue monitoring for lead

and copper at the tap no less frequently than once every three calendar

years using the reduced number of sites specified in Section 611.356(c)

and collecting the samples at times and locations specified in Section

611.356(d)(4)(D). Any such system that has not conducted a round of

monitoring pursuant to Section 611.356(d) since September 30, 1997,

must complete a round of monitoring pursuant to this subsection (b) no

later than September 30, 2000.

BOARD NOTE: USEPA specified September 30, 2000 at 40 CFR

141.81(b)(3)(ii) (1999), as amended at 65 Fed. Reg. 2004 (Jan. 12,

2000) (2000). In order to remain identical-in-substance and to retain

State primacy, the Board retained this date despite the fact that this

Section became effective after that date.

Any water system deemed to have optimized corrosion control pursuant

to this subsection (b) must notify the Agency in writing pursuant to

Section 611.360(a)(3) of any change in treatment or the addition of a

new source. The Agency must require any such system to conduct

additional monitoring or to take other action if the Agency determines

that the additional monitoring is necessary and appropriate to ensure

that the supplier maintains minimal levels of corrosion in its distribution

system.

As of July 12, 2001, a supplier is not deemed to have optimized

corrosion control under this subsection (b), and must implement

corrosion control treatment pursuant to subsection (b)(3)(E) of this

Section, unless it meets the copper action level.

Any supplier triggered into corrosion control because it is no longer

deemed to have optimized corrosion control under this subsection must

implement corrosion control treatment in accordance with the deadlines

in subsection (e) of this Section. Any such large system supplier must

adhere to the schedule specified in that subsection (e) for a medium-

sized system supplier, with the time periods for completing each step

being triggered by the date the supplier is no longer deemed to have

optimized corrosion control under this subsection (b).

Suppliers not required to complete corrosion control steps for having met both action

levels.

Any small system or medium-sized system supplier, otherwise required to

complete the corrosion control steps due to its exceedance exceedence of the

lead or copper action level, may cease completing the treatment steps after the

supplier has fulfilled both of the following conditions:

It has met both the copper action level and the lead action level during

each of two consecutive six-month monitoring periods conducted

pursuant to Section 611.356, and

The supplier has submitted the results for those two consecutive six-

month monitoring periods to the Agency.

A supplier that has ceased completing the corrosion control steps pursuant to

subsection (c)(1) of this Section (or the Agency, if appropriate) must resume

completion of the applicable treatment steps, beginning with the first treatment

step that the supplier previously did not complete in its entirety, if the supplier

thereafter exceeds the lead or copper action level during any monitoring period.

The Agency may, by SEP, require a supplier to repeat treatment steps

previously completed by the supplier where it determines that this is necessary

to properly implement the treatment requirements of this Section. Any such

SEP must explain the basis for this decision.

The requirement for any small or medium-sized system supplier to implement

corrosion control treatment steps in accordance with subsection (e) of this

Section (including systems deemed to have optimized corrosion control under

subsection (b)(1) of this Section) is triggered whenever any small or medium-

sized system supplier exceeds the lead or copper action level.

Treatment steps and deadlines for large systems. Except as provided in subsections

(b)(2) and (b)(3) of this Section, large system suppliers must complete the following

corrosion control treatment steps (described in the referenced portions of Sections

611.352, 611.356, and 611.357) on or before the indicated dates.

Step 1: The supplier must conduct initial monitoring (Sections 611.356(d)(1)

and 611.357(b)) during two consecutive six-month monitoring periods on or

before January 1, 1993.

BOARD NOTE: USEPA specified January 1, 1993 at 40 CFR 141.81(d)(1)

(1999) (2000). In order to remain identical-in-substance and to retain State

primacy, the Board retained this date despite the fact that this Section became

effective after that date.

Step 2: The supplier must complete corrosion control studies (Section

611.352(c)) on or before July 1, 1994.

Step 3: The Agency must approve optimal corrosion control treatment (Section

611.352(d)) by a SEP issued pursuant to Section 611.110 on or before

January 1, 1995.

Step 4: The supplier must install optimal corrosion control treatment (Section

611.352(e)) by January 1, 1997.

Step 5: The supplier must complete follow-up sampling (Sections

611.356(d)(2) and 611.357(c)) by January 1, 1998.

Step 6: The Agency must review installation of treatment and approve optimal

water quality control parameters (Section 611.352(f)) by July 1, 1998.

Step 7: The supplier must operate in compliance with the Agency-specified

optimal water quality control parameters (Section 611.352(g)) and continue to

conduct tap sampling (Sections 611.356(d)(3) and 611.357(d)).

Treatment steps and deadlines for small and medium-sized system suppliers. Except as

provided in subsection (b) of this Section, small and medium-sized system suppliers

must complete the following corrosion control treatment steps (described in the

referenced portions of Sections 611.352, 611.356 and 611.357) by the indicated time

periods.

Step 1: The supplier must conduct initial tap sampling (Sections 611.356(d)(1)

and 611.357(b)) until the supplier either exceeds the lead action level or the

copper action level or it becomes eligible for reduced monitoring under Section

611.356(d)(4). A supplier exceeding the lead action level or the copper action

level must recommend optimal corrosion control treatment (Section

611.352(a)) within six months after it exceeds one of the action levels.

Step 2: Within 12 months after a supplier exceeds the lead action level or the

copper action level, the Agency may require the supplier to perform corrosion

control studies (Section 611.352(b)). If the Agency does not require the

supplier to perform such studies, the Agency must, by a SEP issued pursuant to

Section 611.110, specify optimal corrosion control treatment (Section

611.352(d)) within the following timeframes:

for medium-sized systems, within 18 months after such supplier exceeds

the lead action level or the copper action level,

for small systems, within 24 months after such supplier exceeds the lead

action level or the copper action level.

Step 3: If the Agency requires a supplier to perform corrosion control studies

under step 2 (subsection (e)(2) of this Section), the supplier must complete the

studies (Section 611.352(c)) within 18 months after the Agency requires that

such studies be conducted.

Step 4: If the supplier has performed corrosion control studies under step 2

(subsection (e)(2) of this Section), the Agency must, by a SEP issued pursuant

to Section 611.110, approve optimal corrosion control treatment (Section

611.352(d)) within six months after completion of step 3 (subsection (e)(3) of

this Section).

Step 5: The supplier must install optimal corrosion control treatment (Section

611.352(e)) within 24 months after the Agency approves such treatment.

Step 6: The supplier must complete follow-up sampling (Sections

611.356(d)(2) and 611.357(c)) within 36 months after the Agency approves

optimal corrosion control treatment.

Step 7: The Agency must review the supplier’s installation of treatment and, by

a SEP issued pursuant to Section 611.110, approve optimal water quality

control parameters (Section 611.352(f)) within six months after completion of

step 6 (subsection (e)(6) of this Section).

Step 8: The supplier must operate in compliance with the Agency-approved

optimal water quality control parameters (Section 611.352(g)) and continue to

conduct tap sampling (Sections 611.356(d)(3) and 611.357(d)).

BOARD NOTE: Derived from 40 CFR 141.81 (1999), as amended at 65 Fed. Reg. 2004 (Jan. 12,

2000) (2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

Section 611.353

Source Water Treatment

Suppliers shall must complete the applicable source water monitoring and treatment requirements

(described in the referenced portions of subsection (b) below of this Section, and in Sections 611.356

and 611.358) by the following deadlines.

Deadlines for Completing Source Water Treatment Steps

Step 1: A supplier exceeding the lead action level or the copper action level

shall must complete lead and copper and source water monitoring (Section

611.358(b)) and make a treatment recommendation to the Agency (subsection

(b)(1) below of this Section) within 6 six months after exceeding the pertinent

action level.

Step 2: The Agency shall must, by a SEP issued pursuant to Section 611.110,

make a determination regarding source water treatment (subsection (b)(2)

below of this Section) within 6 six months after submission of monitoring results

under step 1.

Step 3: If the Agency requires installation of source water treatment, the

supplier shall must install that treatment (subsection (b)(3) below of this Section)

within 24 months after completion of step 2.

Step 4: The supplier shall must complete follow-up tap water monitoring

(Section 611.356(d)(2)) and source water monitoring (Section 611.358(c))

within 36 months after completion of step 2.

Step 5: The Agency shall must, by a SEP issued pursuant to Section 611.110,

review the supplier’s installation and operation of source water treatment and

specify MPCs for lead and copper (subsection (b)(4) below of this Section)

within 6 six months after completion of step 4.

Step 6: The supplier shall must operate in compliance with the Agency-specified

lead and copper MPCs (subsection (b)(4) below of this Section) and continue

source water monitoring (Section 611.358(d)).

Description of Source Water Treatment Requirements

System treatment recommendation. Any supplier that exceeds the lead action

level or the copper action level shall must recommend in writing to the Agency

the installation and operation of one of the source water treatments listed in

subsection (b)(2) below of this Section. A supplier may recommend that no

treatment be installed based on a demonstration that source water treatment is

not necessary to minimize lead and copper levels at users’ taps.

Agency determination regarding source water treatment.

The Agency shall must complete an evaluation of the results of all

source water samples submitted by the supplier to determine whether

source water treatment is necessary to minimize lead or copper levels in

water delivered to users’ taps.

If the Agency determines that treatment is needed, the Agency shall

must, by a SEP issued pursuant to Section 611.110, either require

installation and operation of the source water treatment recommended

by the supplier (if any) or require the installation and operation of

another source water treatment from among the following:

ion exchange,

ii)

reverse osmosis,

iii)

lime softening, or

iv)

coagulation/filtration.

The Agency may request and the supplier must submit such additional

information, on or before a certain date, as the Agency determines is

necessary to aid in its review.

The Agency shall must notify the supplier in writing of its determination

and set forth the basis for its decision.

Installation of source water treatment. Each supplier shall must properly install

and operate the source water treatment approved by the Agency under

subsection (b)(2) above of this Section.

Agency review of source water treatment and specification of maximum

permissible source water levels (MPCs).

The Agency shall must review the source water samples taken by the

supplier both before and after the supplier installs source water

treatment, and determine whether the supplier has properly installed and

operated the approved source water treatment.

Based on its review, the Agency shall must, by a SEP issued pursuant

to Section 611.110, approve the lead and copper MPCs for finished

water entering the supplier’s distribution system. Such levels shall must

reflect the contaminant removal capability of the treatment properly

operated and maintained.

The Agency shall must explain the basis for its decision under

subsection (b)(4)(B) above of this Section.

Continued operation and maintenance. Each supplier shall must maintain lead

and copper levels below the MPCs approved by the Agency at each sampling

point monitored in accordance with Section 611.358. The supplier is out of

compliance with this subsection if the level of lead or copper at any sampling

point is greater than the MPC approved by the Agency pursuant to subsection

(b)(4)(B) above of this Section.

Modification of Agency treatment decisions.

On its own initiative, or in response to a request by a supplier, the

Agency may, by a SEP issued pursuant to Section 611.110, modify its

determination of the source water treatment under subsection (b)(2)

above of this Section, or the lead and copper MPCs under subsection

(b)(4) above of this Section.

A request for modification by a supplier shall must be in writing, explain

why the modification is appropriate, and provide supporting

documentation.

The Agency may, by a SEP issued pursuant to Section 611.110,

modify its determination where it concludes that such change is

necessary to ensure that the supplier continues to minimize lead and

copper concentrations in source water.

A revised determination made pursuant to subsection (b)(6)(C) above

of this Section shall must set forth the new treatment requirements,

explain the basis for the Agency’s decision, and provide an

implementation schedule for completing the treatment modifications.

Any interested person may submit information to the Agency, in writing,

that bears on whether the Agency should, within its discretion, issue a

SEP to modify its determination pursuant to subsection (h)(1) above of

this Section. An Agency determination not to act on a submission of

such information by an interested person is not an Agency determination

for the purposes of Sections 39 and 40 of the Act.

Treatment decisions by USEPA. Pursuant to the procedures in 40 CFR

142.19, the USEPA Regional Administrator reserves the prerogative to review

treatment determinations made by the Agency under subsections (b)(2), (b)(4),

or (b)(6) above of this Section and issue federal treatment determinations

consistent with the requirements of 40 CFR 141.83(b)(2), (b)(4), and (b)(6),

where the Administrator finds that:

the Agency has failed to issue a treatment determination by the

applicable deadline contained in subsection (a) above of this Section,

the Agency has abused its discretion in a substantial number of cases or

in cases affecting a substantial population, or

the technical aspects of the Agency’s determination would be

indefensible in an expected federal enforcement action taken against a

supplier.

BOARD NOTE: Derived from 40 CFR 141.83 (1992) (2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

Section 611.356

Tap Water Monitoring for Lead and Copper

Sample site location.

Selecting a pool of targeted sampling sites.

By the applicable date for commencement of monitoring under

subsection (d)(1) of this Section, each supplier must complete a

materials evaluation of its distribution system in order to identify a pool

of targeted sampling sites that meets the requirements of this Section.

The pool of targeted sampling sites must be sufficiently large to ensure

that the supplier can collect the number of lead and copper tap samples

required by subsection (c) of this Section.

The supplier must select the sites for collection of first draw samples

from this pool of targeted sampling sites.

The supplier must not select as sampling sites any faucets that have

point-of-use or point-of-entry treatment devices designed to remove or

capable of removing inorganic contaminants.

Materials evaluation.

A supplier must use the information on lead, copper, and galvanized

steel collected pursuant to 40 CFR 141.42(d) (special monitoring for

corrosivity characteristics) when conducting a materials evaluation.

When an evaluation of the information collected pursuant to 40 CFR

141.42(d) is insufficient to locate the requisite number of lead and

copper sampling sites that meet the targeting criteria in subsection (a) of

this Section, the supplier must review the following sources of

information in order to identify a sufficient number of sampling sites:

All plumbing codes, permits, and records in the files of the

building departments that indicate the plumbing materials that

are installed within publicly- and privately-owned structures

connected to the distribution system;

ii)

All inspections and records of the distribution system that

indicate the material composition of the service connections

which connect a structure to the distribution system;

iii)

All existing water quality information, which includes the results

of all prior analyses of the system or individual structures

connected to the system, indicating locations that may be

particularly susceptible to high lead or copper concentrations;

and

iv)

The supplier must seek to collect such information where

possible in the course of its normal operations (e.g., checking

service line materials when reading water meters or performing

maintenance activities).

Tiers of sampling sites. Suppliers must categorize the sampling sites within their

pool according to the following tiers:

CWS Tier 1 sampling sites. “CWS Tier 1 sampling sites” must include

the following single-family structures:

Those that contain copper pipes with lead solder installed after

1982 or which contain lead pipes; or

ii)

Those that are served by a lead service line.

BOARD NOTE: Subsection (a)(3)(A) was derived from segments of

40 CFR 141.86(a)(3) (1999) (2000). This allows the pool of CWS

tier 1 sampling sites to consist exclusively of structures served by lead

service lines.

CWS Tier 2 sampling sites. “CWS Tier 2 sampling sites” must include

the following buildings, including multiple-family structures:

Those that contain copper pipes with lead solder installed after

1982 or contain lead pipes; or

ii)

Those that are served by a lead service line.

BOARD NOTE: Subsection (a)(3)(B) was derived from segments of

40 CFR 141.86(a)(4) (1999) (2000). This allows the pool of CWS

tier 2 sampling sites to consist exclusively of structures served by lead

service lines.

CWS Tier 3 sampling sites. “CWS Tier 3 sampling sites” must include

the following single-family structures: those that contain copper pipes

with lead solder installed before 1983.

BOARD NOTE: Subsection (a)(3)(C) was derived from segments of

40 CFR 141.86(a)(5) (1999) (2000).

NTNCWS Tier 1 sampling sites. “NTNCWS Tier 1 sampling sites”

must include the following buildings:

Those that contain copper pipes with lead solder installed after

1982 or which contain lead pipes; or

ii)

Those that are served by a lead service line.

BOARD NOTE: Subsection (a)(3)(D) was derived from segments of

40 CFR 141.86(a)(6) (1999) (2000). This allows the pool of

NTNCWS tier 1 sampling sites to consist exclusively of buildings

served by lead service lines.

Alternative NTNCWS sampling sites. “Alternative NTNCWS

sampling sites” must include the following buildings: those that contain

copper pipes with lead solder installed before 1983.

BOARD NOTE: Subsection (a)(3)(E) was derived from segments of

40 CFR 141.86(a)(7) (1999) (2000).

Selection of sampling sites. Suppliers must select sampling sites for their

sampling pool as follows:

CWS Suppliers. CWS suppliers must use CWS tier 1 sampling sites,

except that the supplier may include CWS tier 2 or CWS tier 3

sampling sites in its sampling pool as follows:

If multiple-family residences comprise at least 20 percent of the

structures served by a supplier, the supplier may use CWS tier

2 sampling sites in its sampling pool; or

BOARD NOTE: Subsection (a)(4)(A)(i) was derived from a

segment of 40 CFR 141.86(a)(3)(ii) (1999) (2000).

ii)

If the CWS supplier has an insufficient number of CWS tier 1

sampling sites on its distribution system, the supplier may use

CWS tier 2 sampling sites in its sampling pool; or

BOARD NOTE: Subsection (a)(4)(A)(ii) was derived from a

segment of 40 CFR 141.86(a)(4) (1999) (2000).

iii)

If the CWS supplier has an insufficient number of CWS tier 1

and CWS tier 2 sampling sites on its distribution system, the

supplier may complete its sampling pool with CWS tier 3

sampling sites.

BOARD NOTE: Subsection (a)(4)(A)(iii) was derived from a

segment of 40 CFR 141.86(a)(5) (1999) (2000).

iv)

If the CWS supplier has an insufficient number of CWS tier 1

sampling sites, CWS tier 2 sampling sites, and CWS tier 3

sampling sites, the supplier must use those CWS tier 1 sampling

sites, CWS tier 2 sampling sites, and CWS tier 3 sampling sites

that it has and complete its sampling pool with representative

sites throughout its distribution system for the balance of its

sampling sites. For the purpose of this subsection (a)(4)(A)(iv),

a representative site is a site in which the plumbing materials

used at that site would be commonly found at other sites served

by the water system.

BOARD NOTE: Subsection (a)(4)(A)(iv) was derived from

segments of 40 CFR 141.86(a)(5) (1999), as amended at 65

Fed. Reg. 2007 (Jan. 12, 2000) (2000).

NTNCWS suppliers.

An NTNCWS supplier must select NTNCWS tier 1 sampling

sites for its sampling pool.

BOARD NOTE: Subsection (a)(4)(B)(i) was derived from

segments of 40 CFR 141.86(a)(6) (1999) (2000).

ii)

If the NTNCWS supplier has an insufficient number of

NTNCWS tier 1 sampling sites, the supplier may complete its

sampling pool with alternative NTNCWS sampling sites.

BOARD NOTE: Subsection (a)(4)(B)(ii) was derived from

segments of 40 CFR 141.86(a)(7) (1999) (2000).

iii)

If the NTNCWS supplier has an insufficient number of

NTNCWS tier 1 sampling sites and NTNCWS alternative

sampling sites, the supplier must use representative sites

throughout its distribution system. For the purpose of this

subsection (a)(4)(B)(ii), a representative site is a site in which

the plumbing materials used at that site would be commonly

found at other sites served by the water system.

BOARD NOTE: Subsection (a)(4)(B)(iii) was derived from

segments of 40 CFR 141.86(a)(7) (1999), as amended at 65

Fed. Reg. 2007 (Jan. 12, 2000) (2000).

Suppliers with lead service lines. Any supplier whose distribution

system contains lead service lines must draw samples during each six-

month monitoring period from sampling sites as follows:

50 percent of the samples from sampling sites that contain lead

pipes or from sampling sites that have copper pipes with lead

solder, and

ii)

50 percent of those samples from sites served by a lead service

line.

iii)

A supplier that cannot identify a sufficient number of sampling

sites served by a lead service line must collect first-draw

samples from all of the sites identified as being served by such

lines.

BOARD NOTE: Subsection (a)(4)(C) was derived from

segments of 40 CFR 141.86(a)(8) (1999), as renumbered and

amended at 65 Fed. Reg. 2007 (Jan. 12, 2000) (2000). This

allows the pool of sampling sites to consist exclusively of

structures or buildings served by lead service lines.

Sample collection methods.

All tap samples for lead and copper collected in accordance with this Subpart,

with the exception of lead service line samples collected under Section

611.354(c) and samples collected under subsection (b)(5) of this Section, must

be first-draw samples.

First-draw tap samples.

Each first-draw tap sample for lead and copper must be one liter in

volume and have stood motionless in the plumbing system of each

sampling site for at least six hours.

First-draw samples from residential housing must be collected from the

cold water kitchen tap or bathroom sink tap.

First-draw samples from a non-residential building must be one liter in

volume and must be collected at an interior tap from which water is

typically drawn for consumption.

Non-first-draw samples collected in lieu of first-draw samples pursuant

to subsection (b)(5) of this Section must be one liter in volume and must

be collected at an interior tap from which water is typically drawn for

consumption.

First-draw samples may be collected by the supplier or the supplier

may allow residents to collect first-draw samples after instructing the

residents of the sampling procedures specified in this subsection (b).

To avoid problems of residents handling nitric acid, acidification

of first-draw samples may be done up to 14 days after the

sample is collected.

ii)

After acidification to resolubilize the metals, the sample must

stand in the original container for the time specified in the

approved USEPA method before the sample can be analyzed.

If a supplier allows residents to perform sampling under subsection

(b)(2)(D) of this Section, the supplier may not challenge the accuracy of

sampling results based on alleged errors in sample collection.

Service line samples.

Each service line sample must be one liter in volume and have stood

motionless in the lead service line for at least six hours.

Lead service line samples must be collected in one of the following three

ways:

At the tap after flushing that volume of water calculated as being

between the tap and the lead service line based on the interior

diameter and length of the pipe between the tap and the lead

service line;

ii)

Tapping directly into the lead service line; or

iii)

If the sampling site is a single-family structure, allowing the

water to run until there is a significant change in temperature that

would be indicative of water that has been standing in the lead

service line.

Follow-up first-draw tap samples.

A supplier must collect each follow-up first-draw tap sample from the

same sampling site from which it collected the previous samples.

If, for any reason, the supplier cannot gain entry to a sampling site in

order to collect a follow-up tap sample, the supplier may collect the

follow-up tap sample from another sampling site in its sampling pool, as

long as the new site meets the same targeting criteria and is within

reasonable proximity of the original site.

Substitute non-first-draw samples.

A NTNCWS supplier or a CWS supplier that meets the criteria of

Sections 611.355(c)(7)(A) and (c)(7)(B), that does not have enough

taps that can supply first-draw samples, as defined in Section 611.102,

may apply to the Agency in writing to substitute non-first-draw samples

by a SEP granted under Section 611.110.

A supplier approved to substitute non-first-draw samples must collect

as many first-draw samples from appropriate taps as possible and

identify sampling times and locations that would likely result in the

longest standing time for the remaining sites.

The Agency may grant a SEP that waives the requirement for prior

Agency approval of non-first-draw sample sites selected by the system.

Number of samples.

Suppliers must collect at least one sample from the number of sites listed in the

first column of Table D of this Part (labelled “standard monitoring”) during each

six-month monitoring period specified in subsection (d) of this Section.

A supplier conducting reduced monitoring pursuant to subsection (d)(4) of this

Section must collect one sample from the number of sites specified in the

second column of Table D of this Part (labelled “reduced monitoring”) during

each reduced monitoring period specified in subsection (d)(4) of this Section.

Such reduced monitoring sites must be representative of the sites required for

standard monitoring. The Agency may, by a SEP issued pursuant to Section

611.110, specify sampling locations when a system is conducting reduced

monitoring.

Timing of monitoring.

Initial tap sampling. The first six-month monitoring period for small, medium-

sized and large system suppliers must begin on the dates specified in Table E of

this Part.

All large system suppliers must monitor during each of two consecutive

six-month periods.

All small and medium-sized system suppliers must monitor during each

consecutive six-month monitoring period until the following is true:

The supplier exceeds the lead action level or the copper action

level and is therefore required to implement the corrosion

control treatment requirements under Section 611.351, in which

case the supplier must continue monitoring in accordance with

subsection (d)(2) of this Section, or

ii)

The supplier meets the lead action level and the copper action

level during each of two consecutive six-month monitoring

periods, in which case the supplier may reduce monitoring in

accordance with subsection (d)(4) of this Section.

Monitoring after installation of corrosion control and source water treatment.

Any large system supplier that installs optimal corrosion control

treatment pursuant to Section 611.351(d)(4) must monitor during each

of two consecutive six-month monitoring periods before the date

specified in Section 611.351(d)(5).

Any small or medium-sized system supplier that installs optimal

corrosion control treatment pursuant to Section 611.351(e)(5) must

monitor during each of two consecutive six-month monitoring periods

before the date specified in Section 611.351(e)(6).

Any supplier that installs source water treatment pursuant to Section

611.353(a)(3) must monitor during each of two consecutive six-month

monitoring periods before the date specified in Section 611.353(a)(4).

Monitoring after the Agency specification of water quality parameter values for

optimal corrosion control. After the Agency specifies the values for water

quality control parameters pursuant to Section 611.352(f), the supplier must

monitor during each subsequent six-month monitoring period, with the first six-

month monitoring period to begin on the date the Agency specifies the optimal

values.

Reduced monitoring.

Reduction to annual for small and medium-sized system suppliers

meeting the lead and copper action levels. A small or medium-sized

system supplier that meets the lead and copper action levels during each

of two consecutive six-month monitoring periods may reduce the

number of samples in accordance with subsection (c) of this Section,

and reduce the frequency of sampling to once per year.

SEP allowing reduction to annual for suppliers maintaining water quality

control parameters.

Any supplier that maintains the range of values for the water

quality control parameters reflecting optimal corrosion control

treatment specified by the Agency under Section 611.352(f)

during each of two consecutive six-month monitoring periods

may reduce the frequency of monitoring to once per year and

the number of lead and copper samples to that specified by

subsection (c) above of this Section if it receives written

approval from the Agency in the form of a SEP granted

pursuant to Section 611.110.

ii)

The Agency must review monitoring, treatment, and other

relevant information submitted by the water system in

accordance with Section 611.360, and must notify the system in

writing by a SEP granted pursuant to Sections 611.110 when it

determines the system is eligible to reduce its monitoring

frequency to once every three years pursuant to this subsection

(d)(4).

iii)

The Agency must review, and where appropriate, revise its

determination under subsection (d)(4)(B)(i) of this Section when

the supplier submits new monitoring or treatment data, or when

other data relevant to the number and frequency of tap sampling

becomes available to the Agency.

Reduction to triennial for small and medium-sized system suppliers.

Small and medium-sized system suppliers meeting lead and

copper action levels. A small or medium-sized system supplier

that meets the lead and copper action levels during three

consecutive years of monitoring may reduce the frequency of

monitoring for lead and copper from annually to once every

three years.

ii)

SEP for suppliers meeting optimal corrosion control treatment.

Any supplier that maintains the range of values for the water

quality control parameters reflecting optimal corrosion control

treatment specified by the Agency under Section 611.352(f)

during three consecutive years of monitoring may reduce its

monitoring frequency of monitoring from annual to once every

three years if it receives written approval from the Agency in

the form of a SEP granted pursuant to Section 611.110.

iii)

The Agency must review, and where appropriate, revise its

determination under subsection (d)(4)(C)(ii) of this Section

when the supplier submits new monitoring or treatment data, or

when other data relevant to the number and frequency of tap

sampling becomes available to the Agency.

Sampling at a reduced frequency. A supplier that reduces the number

and frequency of sampling must collect these samples from

representative sites included in the pool of targeted sampling sites

identified in subsection (a) of this Section, preferentially selecting those

sampling sites from the highest tier first. Suppliers sampling annually or

less frequently must conduct the lead and copper tap sampling during

the months of June, July, August, or September unless the Agency has

approved a different sampling period in accordance with subsection

(d)(4)(D)(i) of this Section.

The Agency may grant a SEP pursuant to Section 611.110 that

approves a different period for conducting the lead and copper

tap sampling for systems collecting a reduced number of

samples. Such a period must be no longer than four

consecutive months and must represent a time of normal

operation where the highest levels of lead are most likely to

occur. For a NTNCWS supplier that does not operate during

the months of June through September and for which the period

of normal operation where the highest levels of lead are most

likely to occur is not known, the Agency must designate a

period that represents a time of normal operation for the

system.

ii)

A supplier monitoring annually that has been collecting samples

during the months of June through September and which

receives Agency approval to alter its sample collection period

under subsection (d)(4)(D)(i) of this Section must collect its

next round of samples during a time period that ends no later

than 21 months after the previous round of sampling. A

supplier monitoring once every three years that has been

collecting samples during the months of June through September

and which receives Agency approval to alter the sampling

collection period as provided in subsection (d)(4)(D)(i) of this

Section must collect its next round of samples during a time

period that ends no later than 45 months after the previous

round of sampling. Subsequent rounds of sampling must be

collected annually or once every three years, as required by this

Section. A small system supplier with a waiver granted

pursuant to subsection (g) of this Section that has been

collecting samples during the months of June through September

and which receives Agency approval to alter its sample

collection period under subsection (d)(4)(D)(i) of this Section

must collect its next round of samples before the end of the

nine-year compliance cycle (as that term is defined in Section

611.101).

Any water system that demonstrates for two consecutive six-month

monitoring periods that the tap water lead level computed under Section

611.350(c)(3) is less than or equal to 0.005 mg/L and that the tap

water copper level computed under Section 611.350(c)(3) is less than

or equal to 0.65 mg/L may reduce the number of samples in

accordance with subsection (c) of this Section and reduce the frequency

of sampling to once every three calendar years.

Resumption of standard monitoring.

Small or medium-sized suppliers exceeding lead or copper

action level. A small or medium-sized system supplier subject

to reduced monitoring that exceeds the lead action level or the

copper action level must resume sampling in accordance

subsection (d)(3) of this Section and collect the number of

samples specified for standard monitoring under subsection (c)

of this Section. Such a supplier must also conduct water quality

parameter monitoring in accordance with Section 611.357 (b),

(c), or (d) (as appropriate) during the six-month monitoring

period in which it exceeded the action level. Any such supplier

may resume annual monitoring for lead and copper at the tap at

the reduced number of sites specified in subsection (c) of this

Section after it has completed two subsequent consecutive six-

month rounds of monitoring that meet the criteria of subsection

(d)(4)(A) of this Section. Any such supplier may resume

monitoring once every three years for lead and copper at the

reduced number of sites after it demonstrates through

subsequent rounds of monitoring that it meets the criteria of

either subsection (d)(4)(C) or (d)(4)(E) of this Section.

ii)

Suppliers failing to operate within water quality control

parameters. Any supplier subject to reduced monitoring

frequency that fails to operate within the range of values for the

water quality control parameters specified pursuant to Section

611.352(f) for more than nine days in any six-month period

specified in Section 611.357(d) must conduct tap water

sampling for lead and copper at the frequency specified in

subsection (d)(3) of this Section, must collect the number of

samples specified for standard monitoring under subsection (c)

of this Section, and must resume monitoring for water quality

parameters within the distribution system in accordance with

Section 611.357(d).

Any water supplier subject to a reduced monitoring frequency under

subsection (d)(4) of this Section that either adds a new source of water

or changes any water treatment must inform the Agency in writing in

accordance with Section 611.360(a)(3). The Agency may, by a SEP

granted pursuant to Section 611.110, require the system to resume

sampling in accordance with subsection (d)(3) of this Section and

collect the number of samples specified for standard monitoring under

subsection (c) of this Section or take other appropriate steps such as

increased water quality parameter monitoring or re-evaluation of its

corrosion control treatment given the potentially different water quality

considerations.

A supplier required under subsection (d)(4)(F) of this Section to resume

monitoring in accordance with Section 611.357(d) may resume reduced

monitoring for lead and copper at the tap and for water quality

parameters within the distribution system under the following conditions:

The supplier may resume annual monitoring for lead and copper

at the tap at the reduced number of sites specified in subsection

month rounds of monitoring that meet the criteria of subsection

(d)(4)(B) of this Section and the supplier has received written

approval from the Agency by a SEP pursuant to Section

611.110 that it is appropriate to resume reduced monitoring on

an annual frequency.

ii)

The supplier may resume monitoring for lead and copper once

every three years at the tap at the reduced number of sites after

it demonstrates through subsequent rounds of monitoring that it

meets the criteria of either subsection (d)(4)(C) or (d)(4)(E) of

this Section and the system has received a SEP under Section

611.110 from the Agency that it is appropriate to resume

monitoring once every three years.

iii)

The supplier may reduce the number of water quality parameter

tap water samples required in accordance with Section

611.357(e)(1) and the frequency with which it collects such

samples in accordance with Section 611.357(e)(2). Such a

system may not resume monitoring once every three years for

water quality parameters at the tap until it demonstrates, in

accordance with the requirements of Section 611.357(e)(2),

that it has re-qualified for monitoring once every three years.

BOARD NOTE: Subsections (d)(4)(H)(i) through (d)(4)(H)(iii) are

derived from 40 CFR 141.86(d)(4)(vi)(B)(

) through (d)(4)(vi)(B)(

as added at 65 Fed. Reg. 2009 (January 12, 2000) (2000), since

Illinois Administrative Code codification requirements allow only four

indent levels of subsections.

Additional monitoring. The results of any monitoring conducted in addition to the

minimum requirements of this Section must be considered by the supplier and the

Agency in making any determinations (i.e., calculating the 90th percentile lead action

level or the copper level) under this Subpart G.

Invalidation of lead or copper tap water samples. A sample invalidated under this

subsection does not count toward determining lead or copper 90th percentile levels

under Section 611.350(c)(3) or toward meeting the minimum monitoring requirements

of subsection (c) of this Section.

The Agency must invalidate a lead or copper tap water sample if it determines

that one of the following conditions exists:

The laboratory establishes that improper sample analysis caused

erroneous results;

The sample was taken from a site that did not meet the site selection

criteria of this Section;

The sample container was damaged in transit; or

There is substantial reason to believe that the sample was subject to

tampering.

The supplier must report the results of all samples to the Agency and all

supporting documentation for samples the supplier believes should be

invalidated.

To invalidate a sample under subsection (f)(1) of this Section, the decision and

the rationale for the decision must be documented in writing. The Agency may

not invalidate a sample solely on the grounds that a follow-up sample result is

higher or lower than that of the original sample.

The water supplier must collect replacement samples for any samples

invalidated under this Section if, after the invalidation of one or more samples,

the supplier has too few samples to meet the minimum requirements of

subsection (c) of this Section. Any such replacement samples must be taken as

soon as possible, but no later than 20 days after the date the Agency invalidates

the sample or by the end of the applicable monitoring period, whichever occurs

later. Replacement samples taken after the end of the applicable monitoring

period must not also be used to meet the monitoring requirements of a

subsequent monitoring period. The replacement samples must be taken at the

same locations as the invalidated samples or, if that is not possible, at locations

other than those already used for sampling during the monitoring period.

Monitoring waivers for small system suppliers. Any small system supplier that meets the

criteria of this subsection (g) may apply to the Agency to reduce the frequency of

monitoring for lead and copper under this Section to once every nine years (i.e., a “full

waiver”) if it meets all of the materials criteria specified in subsection (g)(1) of this

Section and all of the monitoring criteria specified in subsection (g)(2) of this Section.

Any small system supplier that meets the criteria in subsections (g)(1) and (g)(2) of this

Section only for lead, or only for copper, may apply to the State for a waiver to reduce

the frequency of tap water monitoring to once every nine years for that contaminant only

(i.e., a “partial waiver”).

Materials criteria. The supplier must demonstrate that its distribution system

and service lines and all drinking water supply plumbing, including plumbing

conveying drinking water within all residences and buildings connected to the

system, are free of lead-containing materials or copper-containing materials, as

those terms are defined in this subsection (g)(1), as follows:

Lead. To qualify for a full waiver, or a waiver of the tap water

monitoring requirements for lead (i.e., a “lead waiver”), the water

supplier must provide certification and supporting documentation to the

Agency that the system is free of all lead-containing materials, as

follows:

It contains no plastic pipes which that contain lead plasticizers,

or plastic service lines which that contain lead plasticizers; and

ii)

It is free of lead service lines, lead pipes, lead soldered pipe

joints, and leaded brass or bronze alloy fittings and fixtures,

unless such fittings and fixtures meet the specifications of NSF

Standard 61, section 9, incorporated by reference in Section

611.102.

BOARD NOTE: Corresponding 40 CFR 141.86(g)(1)(i)(B)

specifies “any standard established pursuant to 42 USC 300g-

6(e) (SDWA Section 1417(e)).” USEPA has stated that the

NSF standard is that standard. See 62 Fed. Reg. 44684 (Aug.

22, 1997).

Copper. To qualify for a full waiver, or a waiver of the tap water

monitoring requirements for copper (i.e., a “copper waiver”), the water

supplier must provide certification and supporting documentation to the

Agency that the system contains no copper pipes or copper service

lines.

Monitoring criteria for waiver issuance. The supplier must have completed at

least one six-month round of standard tap water monitoring for lead and copper

at sites approved by the Agency and from the number of sites required by

subsection (c) of this Section and demonstrate that the 90th percentile levels for

any and all rounds of monitoring conducted since the system became free of all

lead-containing and/or copper-containing materials, as appropriate, meet the

following criteria:

Lead levels. To qualify for a full waiver, or a lead waiver, the supplier

must demonstrate that the 90th percentile lead level does not exceed

0.005 mg/L.

Copper levels. To qualify for a full waiver, or a copper waiver, the

supplier must demonstrate that the 90th percentile copper level does not

exceed 0.65 mg/L.

State approval of waiver application. The Agency must notify the supplier of its

waiver determination by a SEP issued pursuant to Section 611.110, in writing,

setting forth the basis of its decision and any condition of the waiver. As a

condition of the waiver, the Agency may require the supplier to perform specific

activities (e.g., limited monitoring, periodic outreach to customers to remind

them to avoid installation of materials that might void the waiver) to avoid the

risk of lead or copper concentration of concern in tap water. The small system

supplier must continue monitoring for lead and copper at the tap as required by

subsections (d)(1) through (d)(4) of this Section, as appropriate, until it receives

written notification from the Agency that the waiver has been approved.

Monitoring frequency for suppliers with waivers.

A supplier with a full waiver must conduct tap water monitoring for lead

and copper in accordance with subsection (d)(4)(D) of this Section at

the reduced number of sampling sites identified in subsection (c) of this

Section at least once every nine years and provide the materials

certification specified in subsection (g)(1) of this Section for both lead

and copper to the Agency along with the monitoring results.

A supplier with a partial waiver must conduct tap water monitoring for

the waived contaminant in accordance with subsection (d)(4)(D) of this

Section at the reduced number of sampling sites specified in subsection

materials certification specified in subsection (g)(1) of this Section

pertaining to the waived contaminant along with the monitoring results.

Such a supplier also must continue to monitor for the non-waived

contaminant in accordance with requirements of subsection (d)(1)

through (d)(4) of this Section, as appropriate.

If a supplier with a full or partial waiver adds a new source of water or

changes any water treatment, the supplier must notify the Agency in

writing in accordance with Section 611.360(a)(3). The Agency has the

authority to require the supplier to add or modify waiver conditions

(e.g., require recertification that the supplier’s system is free of lead-

containing or copper-containing materials, require additional rounds of

monitoring), if it deems such modifications are necessary to address

treatment or source water changes at the system.

If a supplier with a full or partial waiver becomes aware that it is no

longer free of lead-containing or copper-containing materials, as

appropriate, (e.g., as a result of new construction or repairs), the

supplier must notify the Agency in writing no later than 60 days after

becoming aware of such a change.

Continued eligibility. If the supplier continues to satisfy the requirements of

subsection (g)(4) of this Section, the waiver will be renewed automatically,

unless any of the conditions listed in subsection (g)(5)(A) through (g)(5)(C) of

this Section occur. A supplier whose waiver has been revoked may re-apply

for a waiver at such time as it again meets the appropriate materials and

monitoring criteria of subsections (g)(1) and (g)(2) of this Section.

A supplier with a full waiver or a lead waiver no longer satisfies the

materials criteria of subsection (g)(1)(A) of this Section or has a 90th

percentile lead level greater than 0.005 mg/L.

A supplier with a full waiver or a copper waiver no longer satisfies the

materials criteria of subsection (g)(1)(B) of this Section or has a 90th

percentile copper level greater than 0.65 mg/L.

The State notifies the supplier, in writing, that the waiver has been

revoked, setting forth the basis of its decision.

Requirements following waiver revocation. A supplier whose full or partial

waiver has been revoked by the Agency is subject to the corrosion control

treatment and lead and copper tap water monitoring requirements, as follows:

If the supplier exceeds the lead or copper action level, the supplier must

implement corrosion control treatment in accordance with the deadlines

specified in Section 611.351(e), and any other applicable requirements

of this Subpart G of this Part.

If the supplier meets both the lead and the copper action level, the

supplier must monitor for lead and copper at the tap no less frequently

than once every three years using the reduced number of sample sites

specified in subsection (c) of this Section.

Pre-existing waivers. Small system supplier waivers approved by the Agency in

writing prior to April 11, 2000 must remain in effect under the following

conditions:

BOARD NOTE: Corresponding 40 CFR 141.86(g)(7) sets forth the April 11,

2000 date. The Board has retained that date to maintain consistency with the

federal requirements, despite the fact that this subsection (g)(7) became

effective after that date.

If the supplier has demonstrated that it is both free of lead- containing

and copper-containing materials, as required by subsection (g)(1) of this

Section and that its 90th percentile lead levels and 90th percentile

copper levels meet the criteria of subsection (g)(2) of this Section, the

waiver remains in effect so long as the supplier continues to meet the

waiver eligibility criteria of subsection (g)(5) of this Section. The first

round of tap water monitoring conducted pursuant to subsection (g)(4)

of this Section must be completed no later than nine years after the last

time the supplier has monitored for lead and copper at the tap.

If the supplier has met the materials criteria of subsection (g)(1) of this

Section but has not met the monitoring criteria of subsection (g)(2) of

this Section, the supplier must conduct a round of monitoring for lead

and copper at the tap demonstrating that it meets the criteria of

subsection (g)(2) of this Section no later than September 30, 2000.

Thereafter, the waiver must remain in effect as long as the supplier

meets the continued eligibility criteria of subsection (g)(5) of this

Section. The first round of tap water monitoring conducted pursuant to

subsection (g)(4) of this Section must be completed no later than nine

years after the round of monitoring conducted pursuant to subsection

(g)(2) of this Section.

BOARD NOTE: Corresponding 40 CFR 141.86(g)(7)(ii) sets forth

the September 30, 2000 date. The Board has retained that date to

maintain consistency with the federal requirements, despite the fact that

this subsection (g)(7)(B) became effective after that date.

BOARD NOTE: Derived from 40 CFR 141.86 (1999), as amended at 65 Fed. Reg. 2007 (Jan. 12,

2000) (2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

Section 611.357

Monitoring for Water Quality Parameters

All large system suppliers, and all small and medium-sized system suppliers that exceed the lead action

level or the copper action level, must monitor water quality parameters in addition to lead and copper in

accordance with this Section. The requirements of this Section are summarized in Table G of this Part.

General Requirements

Sample collection methods

Use of tap samples. The totality of all tap samples collected by a

supplier must be representative of water quality throughout the

distribution system taking into account the number of persons served,

the different sources of water, the different treatment methods employed

by the supplier, and seasonal variability. Although a supplier may

conveniently conduct tap sampling for water quality parameters at sites

used for coliform sampling performed pursuant to Subpart L of this

Part, it is not required to do so, and a supplier is not required to

perform tap sampling pursuant to this Section at taps targeted for lead

and copper sampling under Section 611.356(a).

Use of entry point samples. Each supplier must collect samples at entry

points to the distribution system from locations representative of each

source after treatment. If a supplier draws water from more than one

source and the sources are combined before distribution, the supplier

must sample at an entry point to the distribution system during periods

of normal operating conditions (i.e., when water is representative of all

sources being used).

Number of samples

Tap samples. Each supplier must collect two tap samples for applicable

water quality parameters during each six-month monitoring period

specified under subsections (b) through (e) of this Section from the

number of sites indicated in the first column of Table E of this Part.

Entry point samples.

Initial monitoring. Except as provided in subsection (c)(3) of

this Section, each supplier must collect two samples for each

applicable water quality parameter at each entry point to the

distribution system during each six-month monitoring period

specified in subsection (b) of this Section.

ii)

Subsequent monitoring. Each supplier must collect one sample

for each applicable water quality parameter at each entry point

to the distribution system during each six-month monitoring

period specified in subsections (c) through (e) of this Section.

Initial Sampling.

Large systems. Each large system supplier must measure the applicable water

quality parameters specified in subsection (b)(3) of this Section at taps and at

each entry point to the distribution system during each six-month monitoring

period specified in Section 611.356(d)(1).

Small and medium-sized systems. Each small and medium-sized system

supplier must measure the applicable water quality parameters specified in

subsection (b)(3) of this Section at the locations specified in this subsection

during each six-month monitoring period specified in Section 611.356(d)(1)

during which the supplier exceeds the lead action level or the copper action

level.

Water quality parameters:

pH;

Alkalinity;

Orthophosphate, when an inhibitor containing a phosphate compound is

used;

Silica, when an inhibitor containing a silicate compound is used;

Calcium;

Conductivity; and

Water temperature.

Monitoring after installation of corrosion control.

Large systems. Each large system supplier that installs optimal corrosion

control treatment pursuant to Section 611.351(d)(4) must measure the water

quality parameters at the locations and frequencies specified in subsections

(c)(4) and (c)(5) of this Section during each six-month monitoring period

specified in Section 611.356(d)(2)(A).

Small and medium-sized systems. Each small or medium-sized system that

installs optimal corrosion control treatment pursuant to Section 611.351(e)(5)

must measure the water quality parameters at the locations and frequencies

specified in subsections (c)(4) and (c)(5) of this Section during each six-month

monitoring period specified in Section 611.356(d)(2)(B) in which the supplier

exceeds the lead action level or the copper action level.

Any groundwater system can limit entry point sampling described in subsection

(c)(2) of this Section to those entry points that are representative of water

quality and treatment conditions throughout the system. If water from untreated

groundwater sources mixes with water from treated groundwater sources, the

system must monitor for water quality parameters both at representative entry

points receiving treatment and representative entry points receiving no

treatment. Prior to the start of any monitoring under this subsection, the system

must provide to the Agency written information identifying the selected entry

points and documentation, including information on seasonal variability, sufficient

to demonstrate that the sites are representative of water quality and treatment

conditions throughout the system.

Tap water samples, two samples at each tap for each of the following water

quality parameters:

pH;

Alkalinity;

Orthophosphate, when an inhibitor containing a phosphate compound is

used;

Silica, when an inhibitor containing a silicate compound is used; and

Calcium, when calcium carbonate stabilization is used as part of

corrosion control.

Entry point samples, except as provided in subsection (c)(3) of this Section, one

sample at each entry point to the distribution system every two weeks (bi-

weekly) for each of the following water quality parameters:

pH;

When alkalinity is adjusted as part of optimal corrosion control, a

reading of the dosage rate of the chemical used to adjust alkalinity, and

the alkalinity concentration; and

When a corrosion inhibitor is used as part of optimal corrosion control,

a reading of the dosage rate of the inhibitor used, and the concentration

of orthophosphate or silica (whichever is applicable).

Monitoring after the Agency specifies water quality parameter values for optimal

corrosion control.

Large systems. After the Agency has specified the values for applicable water

quality control parameters reflecting optimal corrosion control treatment

pursuant to Section 611.352(f), each large system supplier must measure the

applicable water quality parameters in accordance with subsection (c) of this

Section and determine compliance with the requirements of Section 611.352(g)

every six months with the first six- month period to begin on the date the State

specifies the optimal values under Section 611.352(f).

Small and medium-sized systems. Each small or medium-sized system supplier

must conduct such monitoring during each six-month monitoring period

specified in this subsection (d) in which the supplier exceeds the lead action

level or the copper action level. For any such small and medium-size system

that is subject to a reduced monitoring frequency pursuant to Section

611.356(d)(4) at the time of the action level exceedance exceedence, the end

of the applicable six-month period under this subsection must coincide with the

end of the applicable monitoring period under Section 611.356(d)(4).

Compliance with Agency-designated optimal water quality parameter values

must be determined as specified under Section 611.352(g)

Reduced monitoring.

Reduction in tap monitoring. A supplier that has maintained the range of values

for the water quality parameters reflecting optimal corrosion control treatment

during each of two consecutive six-month monitoring periods under subsection

(d) of this Section must continue monitoring at the entry points to the distribution

system as specified in subsection (c)(4) of this Section. Such a supplier may

collect two samples from each tap for applicable water quality parameters from

the reduced number of sites indicated in the second column of Table E of this

Part during each subsequent six-month monitoring period.

Reduction in monitoring frequency.

Staged reductions in monitoring frequency.

Annual monitoring. A supplier that maintains the range of values

for the water quality parameters reflecting optimal corrosion

control treatment specified pursuant to Section 611.352(f)

during three consecutive years of monitoring may reduce the

frequency with which it collects the number of tap samples for

applicable water quality parameters specified in subsection

(e)(1) of this Section from every six months to annually.

ii)

Triennial monitoring. A supplier that maintains the range of

values for the water quality parameters reflecting optimal

corrosion control treatment specified pursuant to Section

611.352(f) during three consecutive years of annual monitoring

under subsection (e)(2)(A)(i) of this Section may reduce the

frequency with which it collects the number of tap samples for

applicable water quality parameters specified in subsection

(e)(1) of this Section from annually to once every three years.

A water supplier may reduce the frequency with which it collects tap

samples for applicable water quality parameters specified in subsection

(e)(1) of this Section to every three years if it demonstrates the

following during two consecutive monitoring periods:

That its tap water lead level at the 90th percentile is less than or

equal to the PQL for lead specified in Section 611.359

(a)(1)(B),

ii)

That its tap water copper level at the 90th percentile is less than

or equal to 0.65 mg/L for copper in Section 611.350(c)(2), and

iii)

That it also has maintained the range of values for the water

quality parameters reflecting optimal corrosion control treatment

specified by the Agency under Section 611.352(f).

A supplier that conducts sampling annually or every three years must collect

these samples evenly throughout the calendar year so as to reflect seasonal

variability.

Any supplier subject to a reduced monitoring frequency pursuant to this

subsection that fails to operate at or above the minimum value or within the

range of values for the water quality parameters specified pursuant to Section

611.352(f) for more than nine days in any six-month period specified in Section

611.352(g) must resume tap water sampling in accordance with the number and

frequency requirements of subsection (d) of this Section. Such a system may

resume annual monitoring for water quality parameters at the tap at the reduced

number of sites specified in subsection (e)(1) of this Section after it has

completed two subsequent consecutive six-month rounds of monitoring that

meet the criteria of that subsection or may resume monitoring once every three

years for water quality parameters at the tap at the reduced number of sites

after it demonstrates through subsequent rounds of monitoring that it meets the

criteria of either subsection (e)(2)(A) or (e)(2)(B) of this Section.

Additional monitoring by systems. The results of any monitoring conducted in addition

to the minimum requirements of this Section must be considered by the supplier and the

Agency in making any determinations (i.e., determining concentrations of water quality

parameters) under this Section or Section 611.352.

BOARD NOTE: Derived from 40 CFR 141.87 (1999), as amended at 65 Fed. Reg. 2010 (Jan. 12,

2000) (2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

Section 611.358

Monitoring for Lead and Copper in Source Water

Sample location, collection methods, and number of samples

A supplier that fails to meet the lead action level or the copper action level on

the basis of tap samples collected in accordance with Section 611.356 must

collect lead and copper source water samples in accordance with the following

requirements regarding sample location, number of samples, and collection

methods:

A groundwater supplier must take a minimum of one sample at every

entry point to the distribution system that is representative of each well

after treatment (hereafter called a sampling point). The supplier must

take one sample at the same sampling point unless conditions make

another sampling point more representative of each source or treatment

plant.

A surface water supplier must take a minimum of one sample at every

entry point to the distribution system after any application of treatment

or in the distribution system at a point that is representative of each

source after treatment (hereafter called a sampling point). The system

must take each sample at the same sampling point unless conditions

make another sampling point more representative of each source or

treatment plant.

BOARD NOTE: For the purposes of this subsection (a)(1)(B), surface

water systems include systems with a combination of surface and

ground sources.

If a supplier draws water from more than one source and the sources

are combined before distribution, the supplier must sample at an entry

point to the distribution system during periods of normal operating

conditions (i.e., when water is representative of all sources being used).

The Agency may, by a SEP issued pursuant to Section 611.110,

reduce the total number of samples which that must be analyzed by

allowing the use of compositing. Compositing of samples must be done

by certified laboratory personnel. Composite samples from a maximum

of five samples are allowed, provided that if the lead concentration in

the composite sample is greater than or equal to 0.001 mg/L or the

copper concentration is greater than or equal to 0.160 mg/ L, then the

supplier must do either of the following:

The supplier must take and analyze a follow-up sample within

14 days at each sampling point included in the composite; or

ii)

If duplicates of or sufficient quantities from the original samples

from each sampling point used in the composite are available,

the supplier may use these instead of resampling.

SEP requiring an additional sample

When the Agency determines that the results of sampling indicate an

exceedance exceedence of the lead or copper MPC established under

Section 611.353(b)(4), it must, by a SEP issued pursuant to Section

611.110, require the supplier to collect one additional sample as soon

as possible after the initial sample at the same sampling point, but no

later than two weeks after the supplier took the initial sample.

If a supplier takes an Agency-required confirmation sample for lead or

copper, the supplier must average the results obtained from the initial

sample with the results obtained from the confirmation sample in

determining compliance with the Agency-specified lead and copper

MPCs.

Any analytical result below the MDL must be considered as

zero for the purposes of averaging.

ii)

Any value above the MDL but below the PQL must either be

considered as the measured value or be considered one-half the

PQL.

Monitoring frequency after system exceeds tap water action level. A supplier that

exceeds the lead action level or the copper action level in tap sampling must collect one

source water sample from each entry point to the distribution system within six months

after the exceedance exceedence.

Monitoring frequency after installation of source water treatment. A supplier that installs

source water treatment pursuant to Section 611.353(a)(3) must collect an additional

source water sample from each entry point to the distribution system during each of two

consecutive six-month monitoring periods on or before the deadline specified in Section

611.353(a)(4).

Monitoring frequency after the Agency has specified the lead and copper MPCs or has

determined that source water treatment is not needed.

A supplier must monitor at the frequency specified by subsection (d)(1)(A) or

(d)(1)(B) of this Section where the Agency has specified the MPCs pursuant to

Section 611.353(b)(4) or has determined that the supplier is not required to

install source water treatment pursuant to Section 611.353(b)(2).

GWS suppliers.

A GWS supplier required to sample by subsection (d)(1) of this

Section must collect samples once during the three-year

compliance period (as that term is defined in Section 611.101)

during which the Agency makes its determination pursuant to

Section 611.353(b)(4) or 611.353(b)(2).

ii)

A GWS supplier required to sample by subsection (d)(1) of this

Section must collect samples once during each subsequent

compliance period.

A SWS or mixed system supplier must collect samples annually, the first

annual monitoring period to begin on the date on which the Agency

makes its determination pursuant to Section 611.353(b)(4) or

611.353(b)(2).

A supplier is not required to conduct source water sampling for lead or copper

if the supplier meets the action level for the specific contaminant in all tap water

samples collected during the entire source water sampling period applicable

under subsection (d)(1)(A) or (d)(1)(B) of this Section.

Reduced monitoring frequency.

A GWS supplier may reduce the monitoring frequency for lead and copper in

source water to once during each nine-year compliance cycle (as that term is

defined in Section 611.101) if the supplier meets one of the following criteria:

The supplier demonstrates that finished drinking water entering the

distribution system has been maintained below the maximum permissible

lead and copper concentrations specified by the State in Section

611.353(b)(4) during at least three consecutive compliance periods

under subsection (d)(1) of this Section; or

The Agency has determined, by a SEP issued pursuant to Section

611.110, that source water treatment is not needed and the system

demonstrates that, during at least three consecutive compliance periods

in which sampling was conducted under subsection (d)(1) of this

Section, the concentration of lead in source water was less than or

equal to 0.005 mg/L and the concentration of copper in source water

was less than or equal to 0.65 mg/L.

A SWS or mixed system supplier may reduce the monitoring frequency in

subsection (d)(1) of this Section to once during each nine-year compliance

cycle (as that term is defined in Section 611.101) if the supplier meets one of

the following criteria:

The supplier demonstrates that finished drinking water entering the

distribution system has been maintained below the maximum permissible

lead and copper concentrations specified by the Agency under Section

611.353(b)(4) for at least three consecutive years; or

The Agency has determined, by a SEP issued pursuant to Section

611.110, that source water treatment is not needed and the supplier

demonstrates that, during at least three consecutive years, the

concentration of lead in source water was less than or equal to 0.005

mg/L and the concentration of copper in source water was less than or

equal to 0.65 mg/L.

A supplier that uses a new source of water is not eligible for reduced monitoring

for lead or copper until it demonstrates by samples collected from the new

source during three consecutive monitoring periods, of the appropriate duration

provided by subsection (d)(1) of this Section, that lead or copper

concentrations are below the MPC as specified by the Agency pursuant to

Section 611.353(a)(4).

BOARD NOTE: Derived from 40 CFR 141.88 (1999), as amended at 65 Fed. Reg. 2012 (Jan. 12,

2000) (2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

SUBPART K: GENERAL MONITORING AND ANALYTICAL

REQUIREMENTS

Section 611.510

Special Monitoring for Unregulated Contaminants

Monitoring for Phase I unregulated contaminants.

All CWS and NTNCWS suppliers shall must begin monitoring for the

contaminants listed in subsection (a)(5) no later than the the following dates:

Less than 3300 persons served: January 1, 1991.

3300 to 10,000 persons served: January 1, 1989.

More than 10,000 persons served: January 1, 1988.

SWS and mixed system suppliers shall must sample at points in the distribution

system representative of each water source or at entry points to the distribution

system after any application of treatment. The minimum number of samples is

one year of quarterly samples per water source.

GWS suppliers shall must sample at points of entry to the distribution system

representative of each well after any application of treatment. The minimum

number of samples is one sample per entry point to the distribution system.

The Agency may issue a SEP pursuant to Section 610.110 to require a supplier

to use a confirmation sample for results that it finds dubious for whatever

reason. The Agency must state its reasons for issuing the SEP if the SEP is

Agency-initiated.

List of Phase I unregulated chemical contaminants:

Bromobenzene

Bromodichloromethane

Bromoform

Bromomethane

Chlorobenzene

Chlorodibromomethane

Chloroethane

Chloroform

Chloromethane

o-Chlorotoluene

p-Chlorotoluene

Dibromomethane

m-Dichlorobenzene

1,1-Dichloroethane

1,3-Dichloropropane

2,2-Dichloropropane

1,1-Dichloropropene

1,3-Dichloropropene

1,1,1,2-Tetrachloroethane

1,1,2,2-Tetrachloroethane

1,2,3-Trichloropropane

This subsection corresponds with 40 CFR 141.40(f), reserved by USEPA.

This statement maintains structural consistency with USEPA rules.

Analyses performed pursuant to subsection (a) shall must be conducted using

the following USEPA Organic Methods: Methods 502.2 or 524.2 or their

equivalent as approved by the Agency, except that analyses for bromodichloro-

methane, bromoform, chlorodibromomethane, and chloroform may also be

performed using USEPA Organic Methods: Method 551, and analyses for

1,2,3-trichloropropane may also be performed using USEPA Organic

Methods: Method 504.1, all of which are incorporated by reference in Section

611.102.

BOARD NOTE: Subsection (b) (a) derived from 40 CFR 141.40(a) through (m)

(1995) (2000). The Board has adopted no counterpart to 40 CFR 141.40(h), which

the Board has codified at subsection (c) below of this Section; 141.40(i), which pertains

to the ability of suppliers to grandfather data up until a date long since expired;

141.41(j), an optional USEPA provision relating to monitoring 15 additional

contaminants that USEPA does not require for state programs; 141.40(k), which

pertains to notice to the Agency by smaller suppliers up until a date long since expired in

lieu of sampling; 141.40(l), which the Board has adopted at subsection (d) below of this

Section; and 141.40(m), an optional provision that pertains to composite sampling.

Otherwise, the structure of this Section directly corresponds with 40 CFR 141.40(a)

through (m) (1995) (2000).

Monitoring for Phase V unregulated contaminants. Monitoring of the unregulated

organic contaminants listed in subsection (b)(11) below of this Section and the

unregulated inorganic contaminants listed in subsection (b)(12) below of this Section

shall must be conducted as follows:

Each CWS and NTNCWS supplier shall must take four consecutive quarterly

samples at each sampling point for each contaminant listed in subsection (b)(11)

below of this Section and report the results to the Agency. Monitoring must be

completed by December 31, 1995.

Each CWS and NTNCWS supplier shall must take one sample at each

sampling point for each contaminant listed in subsection (b)(12) below of this

Section and report the results to the Agency. Monitoring must be completed by

December 31, 1995.

Each CWS and NTNCWS supplier may apply to the Agency for a SEP

pursuant to Section 611.110 that releases it from any of the requirements of

subsections (b)(1) and (b)(2) above of this Section.

The Agency shall must grant a SEP pursuant to Section 611.110 as follows:

From any requirement of subsection (b)(1) above of this Section based

on consideration of the factors set forth at Section 611.110(e), and

From any requirement of subsection (b)(2) above of this Section if

previous analytical results indicate contamination would not occur,

provided this data was collected after January 1, 1990.

A GWS supplier shall must take a minimum of one sample at every entry point

to the distribution system that is representative of each well after treatment

(“sampling point”).

A SWS or mixed system supplier shall must take a minimum of one sample at

points in the distribution system that are representative of each source or at each

entry point to the system after treatment (“sampling point”).

If the system draws water from more than one source and sources are

combined before distribution, the supplier shall must sample at an entry point

during periods of normal operating conditions (when water representative of all

sources is being used).

The Agency may issue a SEP pursuant to Section 610.110 to require a supplier

to use a confirmation sample for results that it finds dubious for whatever

reason. The Agency must state its reasons for issuing the SEP if the SEP is

Agency-initiated.

Suppliers shall must take samples at the same sampling point unless the Agency

has granted a SEP allowing another sampling point because conditions make

another sampling point more representative of the water from each source or

treatment plant.

BOARD NOTE: Subsection (b)(9) above of this Section corresponds with

duplicate segments of 40 CFR 141.40(n)(5) and (n)(6) (1995) (2000), which

correspond with subsections (b)(5) and (b)(6) above of this Section. The

Board has adopted no counterpart to 40 CFR 141.40(n)(9), an optional

provision that pertains to composite sampling. Otherwise, the structure of this

Section directly corresponds with 40 CFR 141.40(n) (1995) (2000).

10)

Instead of performing the monitoring required by this subsection, a CWS and

NTNCWS supplier serving fewer than 150 service connections may send a

letter to the Agency stating that the PWS is available for sampling. This letter

must be sent to the Agency by January 1, 1994. The supplier shall must not

send such samples to the Agency, unless requested to do so by the Agency.

11)

List of Phase V unregulated organic contaminants with methods required for

analysis (all methods are from USEPA Organic Methods unless otherwise

noted; all are incorporated by reference in Section 611.102):

Contaminant

USEPA Organic Methods

Aldicarb

531.1, Standard Methods, 18th ed.:

Method 6610

Aldicarb sulfone

531.1, Standard Methods, 18th ed.:

Method 6610

Aldicarb sulfoxide

531.1, Standard Methods, 18th ed.:

Method 6610

Aldrin

505, 508, 508.1, 525.2

Butachlor

507, 525.2

Carbaryl

531.1, Standard Methods, 18th ed.:

Method 6610

Dicamba

515.1, 515.2, 555

Dieldrin

505, 508, 508.1, 525.2

3-Hydroxycarbofuran

531.1, Standard Methods, 18th ed.:

Method 6610

Methomyl

531.1, Standard Methods, 18th ed.:

Method 6610

Metolachlor

507, 508.1, 525.2

Metribuzin

507, 508.1, 525.2

Propachlor

508, 508.1, 525.2

12)

List of unregulated inorganic contaminants (all methods indicated are

incorporated by reference in Section 611.102):

Contaminant

Methods

Sulfate

USEPA Environmental Inorganic

Methods: Methods 300.0, 375.2;

ASTM Method D 4327-91; Standard

Methods, 18th ed.: Methods 4110,

4500-SO

F, 4500-SO

C & 4500-

BOARD NOTE: Subsection (b) derived from 40 CFR 141.40(n) (1995) (2000).

Analyses performed pursuant to this Section must be conducted by a laboratory

certified pursuant to Section 611.646(q).

BOARD NOTE: Subsection (c) derived from 40 CFR 141.40 (h) (1995) (2000).

All CWS and NTNCWS suppliers shall must repeat the monitoring required by this

Section no less frequently than every five years, starting from the dates specified in

subsections (a)(1) and (b)(2) above of this Section.

BOARD NOTE: Subsection (d) derived from 40 CFR 141.40 (l) (1995) (2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

SUBPART L: MICROBIOLOGICAL MONITORING AND ANALYTICAL

REQUIREMENTS

Section 611.521

Routine Coliform Monitoring

Suppliers shall must collect total coliform samples at sites which that are representative

of water throughout the distribution system according to a written sample siting plan,

which must be approved by special exception permit.

The monitoring frequency for total coliforms for CWSs is based on the population

served by the CWS, as set forth in Section 611.Table A.

The monitoring frequency for total coliforms for non-CWSs is as follows:

A non-CWS using only groundwater (except groundwater under the direct

influence of surface water, as determined in Section 611.212) and serving

1,000 persons or fewer shall must monitor each calendar quarter that the

system provides water to the public, except that the Agency shall must reduce

this monitoring frequency if a sanitary survey shows that the system is free of

sanitary defects. Beginning June 29, 1994, the Agency cannot reduce the

monitoring frequency for a non-CWS using only groundwater (except

groundwater under the direct influence of surface water) and serving 1,000

persons or fewer to less than once per year.

A non-CWS using only groundwater (except groundwater under the direct

influence of surface water) and serving more than 1,000 persons during any

month shall must monitor at the same frequency as a like-sized CWS, as

specified in subsection (b) above of this Section, except the Agency shall must

reduce this monitoring frequency for any month the system serves 1,000

persons or fewer. the The Agency cannot reduce the monitoring to less than

once per year. For systems using groundwater under the direct influence of

surface water, subsection (c)(4) below of this Section applies.

A non-CWS using surface water, in total or in part, shall must monitor at the

same frequency as a like-sized CWS, as specified in subsection (b) above of

this Section, regardless of the number of persons it serves.

A non-CWS using groundwater under the direct influence of surface water,

shall must monitor at the same frequency as a like-sized CWS, as specified in

subsection (b) above of this Section. The supplier shall must begin monitoring

at this frequency beginning six months after Public Health determines that the

groundwater is under the direct influence of surface water.

The supplier shall must collect samples at regular time intervals throughout the month,

except that a supplier which that uses only groundwater (except groundwater under the

direct influence of surface water) and serves 4,900 persons or fewer, may collect all

required samples on a single day if they are taken from different sites.

A PWS that uses surface water or groundwater under the direct influence of surface

water, and does not practice filtration in compliance with Subpart B of this Part, shall

must collect at least one sample near the first service connection each day the turbidity

level of the source water, measured as specified in Section 611.532(b), exceeds 1

NTU. This sample must be analyzed for the presence of total coliforms. When one or

more turbidity measurements in any day exceed 1 NTU, the supplier shall must collect

this coliform sample within 24 hours of the first exceedance exceedence, unless the

Agency has determined, by special exception permit, that the supplier, for logistical

reasons outside the supplier’s control, cannot have the sample analyzed within 30 hours

of collection. Sample results from this coliform monitoring must be included in

determining compliance with the MCL for total coliforms in Section 611.325.

Special purpose samples, such as those taken to determine whether disinfection

practices are sufficient following pipe placement, replacement or repair, must not be

used to determine compliance with the MCL for total coliforms in Section 611.325.

BOARD NOTE: Derived from 40 CFR 141.21(a) (1989), as amended at 54 Fed. Reg. 27562, June

29, 1989 (2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

SUBPART N: INORGANIC MONITORING AND ANALYTICAL

REQUIREMENTS

Section 611.601

Monitoring Frequency

Monitoring shall must be conducted as follows:

Required sampling.

Each supplier shall must take a minimum of one sample at each sampling point

at the times required by Section 611.610 beginning in the initial compliance

period.

Each sampling point must produce samples that are representative of the water

from each source after treatment or from each treatment plant, as required by

subsection (b) below of this Section. The total number of sampling points must

be representative of the water delivered to users throughout the PWS.

The supplier shall must take each sample at the same sampling point unless

conditions make another sampling point more representative of each source or

treatment plant and the Agency has granted a SEP pursuant to subsection (b)(5)

below of this Section.

Sampling points.

Sampling points for GWSs. Unless otherwise provided by SEP, a GWS

supplier shall must take at least one sample from each of the following points:

each entry point that is representative of each well after treatment.

Sampling points for SWSs and mixed systems. Unless otherwise provided by

SEP, a SWS or mixed system supplier shall must take at least one sample from

each of the following points:

Each entry point after the application of treatment; or

A point in the distribution system that is representative of each source

after treatment.

If a system draws water from more than one source, and the sources are

combined before distribution, the supplier shall must sample at an entry point

during periods of normal operating conditions when water is representative of all

sources being used.

Additional sampling points. The Agency shall must, by SEP, designate

additional sampling points in the distribution system or at the consumer’s tap if it

determines that such samples are necessary to more accurately determine

consumer exposure.

Alternative sampling points. The Agency shall must, by SEP, approve alternate

sampling points if the supplier demonstrates that the points are more

representative than the generally required point.

This subsection corresponds with 40 CFR 141.23(a)(4), an optional USEPA provision

relating to compositing of samples that USEPA does not require for state programs.

This statement maintains structural consistency with USEPA rules.

The frequency of monitoring for the following contaminants must be in accordance with

the following Sections:

Asbestos: Section 611.602;

Antimony, barium, beryllium, cadmium, chromium, cyanide, fluoride, mercury,

nickel, selenium, and thallium: Section 611.603;

Nitrate: Section 611.604; and

Nitrite: Section 611.605.

BOARD NOTE: Derived from 40 CFR 141.23(a) and (c) (1995) (2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

Section 611.602

Asbestos Monitoring Frequency

The frequency of monitoring conducted to determine compliance with the MCL for asbestos in Section

611.301 is as follows:

Unless the Agency has determined under subsection (c) that the PWS is not vulnerable,

each CWS and NTNCWS supplier shall must monitor for asbestos during the first

compliance period of each compliance cycle, beginning January 1, 1993.

CWS suppliers may apply to the Agency, by way of an application for a SEP under

Section 611.110, for a determination that the CWS is not vulnerable based on

consideration of the criteria listed in subsection (c) below of this Section.

The Agency shall must determine that the CWS is “not vulnerable” if the CWS is not

vulnerable to contamination either from asbestos in its source water, from corrosion of

asbestos-cement pipe, or from both, based on a consideration of the following factors:

Potential asbestos contamination of the water source; and

The use of asbestos-cement pipe for finished water distribution and the

corrosive nature of the water.

A SEP based on a determination that a CWS is not vulnerable to asbestos

contamination expires at the end of the compliance cycle for which it was issued.

A supplier of a PWS vulnerable to asbestos contamination due solely to corrosion of

asbestos-cement pipe shall must take one sample at a tap served by asbestos-cement

pipe and under conditions where asbestos contamination is most likely to occur.

A supplier of a PWS vulnerable to asbestos contamination due solely to source water

shall must monitor in accordance with Section 611.601.

A supplier of a PWS vulnerable to asbestos contamination due both to its source water

supply and corrosion of asbestos-cement pipe shall must take one sample at a tap

served by asbestos-cement pipe and under conditions where asbestos contamination is

most likely to occur.

A supplier that exceeds the MCL, as determined in Section 611.609, shall must monitor

quarterly beginning in the next quarter after the violation occurred.

Reduction of quarterly monitoring.

The Agency shall must issue a SEP pursuant to Section 611.110 that reduces

the monitoring frequency to that specified by subsection (a) if it determines that

the sampling point is reliably and consistently below the MCL.

The request must, at a minimum, include the following information:

For a GWS: two quarterly samples.

For an SWS or mixed system: four quarterly samples.

In issuing a SEP, the Agency shall must specify the level of the contaminant

upon which the “reliably and consistently” determination was based. All SEPs

that allow less frequent monitoring based on an Agency “reliably and

consistently” determination shall must include a condition requiring the supplier

to resume quarterly monitoring pursuant to subsection (h) above of this Section

if it violates the MCL specified by Section 611.609.

If the Agency determines that data collected after January 1, 1990 are generally

consistent with the requirements of this Section, it may grant a SEP pursuant to Section

100

611.110 that allows the supplier to use those data to satisfy the requirements of this

Section for the compliance period beginning January 1, 1993.

BOARD NOTE: Derived from 40 CFR 141.23(b) (1993) (2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

Section 611.603

Inorganic Monitoring Frequency

The frequency of monitoring conducted to determine compliance with the revised MCLs in Section

611.301 for antimony, barium, beryllium, cadmium, chromium, cyanide, fluoride, mercury, nickel,

selenium, and thallium is as follows:

Suppliers shall must take samples at each sampling point, beginning in the initial

compliance period, as follows:

For GWSs: at least one sample during each compliance period;

For SWSs and mixed systems: at least one sample each year.

BOARD NOTE: Derived from 40 CFR 141.23(c)(1) (1994) (2000).

SEP Application.

The supplier may apply to the Agency for a SEP that allows reduction from the

monitoring frequencies specified in subsection (a) above of this Section pursuant

to subsections (d) through (f) below of this Section and Section 611.110.

The supplier may apply to the Agency for a SEP that relieves it of the

requirement for monitoring cyanide pursuant to subsections (d) through (f)

below of this Section and Section 611.110 if it can demonstrate that its system

is not vulnerable due to a lack of any industrial source of cyanide.

BOARD NOTE: Drawn from 40 CFR 141.23(c)(2) and (c)(6) (1994) (2000).

SEP Procedures. The Agency shall must review the request pursuant to the SEP

procedures of Section 611.110 based on consideration of the factors in subsection (e)

below of this Section.

BOARD NOTE: Drawn from 40 CFR 141.23(c)(6) (1994) (2000).

Standard for SEP reduction in monitoring. The Agency shall must grant a SEP that

allows a reduction in the monitoring frequency if the supplier demonstrates that all

101

previous analytical results were less than the MCL, provided the supplier meets the

following minimum data requirements:

For GWS suppliers: a minimum of three rounds of monitoring.

For SWS and mixed system suppliers: annual monitoring for at least three

years.

At least one sample must have been taken since January 1, 1990.

A supplier that uses a new water source is not eligible for a SEP until it

completes three rounds of monitoring from the new source.

BOARD NOTE: Drawn from 40 CFR 141.23(c)(4) (1994) (2000).

Standard for SEP monitoring conditions. As a condition of any SEP, the Agency shall

must require that the supplier take a minimum of one sample during the term of the SEP.

In determining the appropriate reduced monitoring frequency, the Agency shall must

consider:

Reported concentrations from all previous monitoring;

The degree of variation in reported concentrations; and

Other factors may affect contaminant concentrations, such as changes in

groundwater pumping rates, changes in the CWSs configuration, the CWS’s

operating procedures, or changes in stream flows or characteristics.

BOARD NOTE: Drawn from 40 CFR 141.23(c)(3) and (c)(5) (1994) (2000).

SEP Conditions and Revision.

A SEP will expire at the end of the compliance cycle for which it was issued.

BOARD NOTE: Drawn from 40 CFR 141.23(c)(3) (1994) (2000).

In issuing a SEP, the Agency shall must specify the level of the contaminant

upon which the “reliably and consistently” determination was based. A SEP

must provide that the Agency will review and, where appropriate, revise its

determination of the appropriate monitoring frequency when the supplier

submits new monitoring data or when other data relevant to the supplier’s

appropriate monitoring frequency become available.

102

BOARD NOTE: Drawn from 40 CFR 141.23(c)(6) (1994) (2000).

A supplier that exceeds the MCL for antimony, barium, beryllium, cadmium, chromium,

cyanide, fluoride, mercury, nickel, selenium, or thallium, as determined in Section

611.609, shall must monitor quarterly for that contaminant, beginning in the next quarter

after the violation occurred.

BOARD NOTE: Derived from 40 CFR 141.23(c)(7) (1994) (2000).

Reduction of quarterly monitoring.

The Agency shall must grant a SEP pursuant to Section 611.110 that reduces

the monitoring frequency to that specified by subsection (a) above of this

Section if it determines that the sampling point is reliably and consistently below

the MCL.

A request for a SEP must include the following minimal information:

For a GWS: two quarterly samples.

For an SWS or mixed system: four quarterly samples.

In issuing the SEP, the Agency shall must specify the level of the contaminant

upon which the “reliably and consistently” determination was based. All SEPs

that allow less frequent monitoring based on an Agency “reliably and

consistently” determination shall must include a condition requiring the supplier

to resume quarterly monitoring for any contaminant pursuant to subsection (g)

above of this Section if it violates the MCL specified by Section 611.609 for

that contaminant.

BOARD NOTE: Derived from 40 CFR 141.23(c)(8) (1994) (2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

Section 611.609

Determining Compliance

Compliance with the MCLs of Sections 611.300 or 611.301 (as appropriate) must be determined

based on the analytical result(s) obtained at each sampling point.

For suppliers that monitor at a frequency greater than annual, compliance with the

MCLs for antimony, asbestos, barium, beryllium, cadmium, chromium, cyanide,

fluoride, mercury, nickel, selenium, or thallium is determined by a running annual average

at each sampling point.

103

If the average at any sampling point is greater than the MCL, then the supplier is

out of compliance.

If any one sample would cause the annual average to be exceeded, then the

supplier is out of compliance immediately.

Any sample below the method detection limit must be calculated at zero for the

purpose of determining the annual average.

BOARD NOTE: The “method detection limit” is different from the “detection

limit”, ” as set forth in Section 611.600. The “method detection limit” is the

level of contaminant that can be determined by a particular method with a 95

percent degree of confidence, as determined by the method outlined in 40 CFR

136, appendix Appendix B, incorporated by reference at Section 611.102.

For suppliers that monitor annually or less frequently, compliance with the MCLs for

antimoney antimony, asbestos, barium, beryllium, cadmium, chromium, cyanide,

fluoride, mercury, nickel, selenium, or thallium is determined by the level of the

contaminant at any sampling point. If a confirmation sample is taken, the determination

of compliance will be based on the average of the two samples.

Compliance with the MCLs for nitrate and nitrite is determined based on one sample if

the levels of these contaminants are below the MCLs. If the levels of nitrate or nitrite

exceed the MCLs in the initial sample, Section 611.606 requires confirmation sampling,

and compliance is determined based on the average of the initial and confirmation

samples.

When the portion of the distribution system that is out of compliance is separable from

other parts of the distribution system and has no interconnections, the supplier may give

the public notice required by Subpart T only to persons served by that portion of the

distribution system not in compliance.

BOARD NOTE: Derived from 40 CFR 141.23(i) (1994) (2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

104

SUBPART Q: RADIOLOGICAL MONITORING AND ANALYTICAL

REQUIREMENTS

Section 611.720

Analytical Methods

The methods specified below, incorporated by reference in Section 611.102, are to be

used to determine compliance with Sections Section 611.330 and 611.331, except in

cases where alternative methods have been approved in accordance with Section

611.480.

Gross Alpha and Beta:

ASTM Method 302;

Standard Methods:

Method 302; or

ii)

Method 7110 B;

USEPA Interim Radiochemical Methods: page 1;

USEPA Radioactivity Methods: Method 900;

USEPA Radiochemical Analyses: page 1;

USEPA Radiochemistry Methods: Method 00-01; or

USGS Methods: Method R-1120-76

Gross Alpha:

Standard Methods: Method 7110 C; or

USEPA Radiochemistry Methods: Method 00-02.

Radium-226:

ASTM Methods:

Method D-2460-90; or

ii)

Method D-3454-91;

105

New York Radium Method;

Standard Methods:

Method 304;

ii)

Method 305;

iii)

Method 7500-Ra B; or

iv)

Method 7500-Ra C;

USDOE Methods: Method Ra-05;

USEPA Interim Radiochemical Methods: pages 13 and 16;

USEPA Radioactivity Methods: Methods 903, 903.1;

USEPA Radiochemical Analyses: page 19;

USEPA Radiochemistry Methods: Methods Ra-03, Ra-04; or

USGS Methods:

Method R-1140-76; or

ii)

Method R-1141-76.

Radium-228:

Standard Methods:

Method 304; or

ii)

Method 7500-Ra D;

New York Radium Method;

USEPA Interim Radiochemical Methods: page 24;

USEPA Radioactivity Methods: Method 904;

106

USEPA Radiochemical Analyses: page 19;

USEPA Radiochemistry Methods: Method Ra-05;

USGS Methods: Method R-1142-76; or

New Jersey Radium Method.

Uranium:

ASTM Methods:

Method D-2907;

ii)

Method D-2907-91;

iii)

Method D 3972-90; or

iv)

Method D 5174-91;

USEPA Radioactivity Methods: Methods 908, 908.1;

USEPA Radiochemical Analyses: page 33;

USEPA Radiochemistry Methods: Method 00-07; or

USGS Methods:

Method R-1180-76;

ii)

Method R-1181-76; or

iii)

Method R-1182-76.

Cesium:

ASTM Methods:

Method D 2459-72; or

ii)

Method D 3649-91;

Standard Methods:

107

Method 7120 (19th ed.); or

ii)

Method 7500-Cs B;

USDOE Methods: Method 4.5.2.3;

USEPA Interim Radiochemical Methods: page 4;

USEPA Radioactivity Methods: Methods 901, 901.1;

USEPA Radiochemical Analyses: page 92; or

USGS Methods:

Method R-1110-76; or

ii)

Method R-1111-76.

Iodine:

ASTM Methods:

D 3649-91; or

ii)

D 4785-88;

Standard Methods:

Method 7120 (19th ed.);

ii)

Method 7500-I B;

iii)

Method 7500-I C; or

iv)

Method 7500-I D;

USDOE Methods: Method 4.5.2.3;

USEPA Interim Radiochemical Methods: pages 6, 9;

USEPA Radiochemical Analyses: page 92; or

108

USEPA Radioactivity Methods: Methods 901.1, 902.

Strontium-89 & 90:

Standard Methods:

Method 303; or

ii)

Method 7500-Sr B;

USDOE Methods:

Method Sr-01; or

ii)

Method Sr-02;

USEPA Interim Radiochemical Methods: page 29;

USEPA Radioactivity Methods: Method 905;

USEPA Radiochemical Analyses: page 65;

USEPA Radiochemistry Methods: Method Sr-04; or

USGS Methods: Method R-1160-76.

Tritium:

ASTM Methods: Method D 4107-91;

Standard Methods:

Method 306; or

ii)

Method 7500-3H B;

USEPA Interim Radiochemical Methods: page 34;

USEPA Radioactivity Methods: Method 906;

USEPA Radiochemical Analyses: page 87;

USEPA Radiochemistry Methods: Method H-02; or

109

USGS Methods: Method R-1171-76.

10)

Gamma Emitters:

ASTM Methods:

Method D 3649-91; or

ii)

Method D 4785-88;

Standard Methods:

Method 7120 (19th ed.);

ii)

Method 7500-Cs B; or

iii)

Method 7500-I B;

USDOE Method: Method 4.5.2.3;

USEPA Radioactivity Methods: Methods 901, 901.1, 902;

USEPA Radiochemical Analyses: page 92; or

USGS Methods: Method R-1110-76.

When the identification and measurement of radionuclides other than those listed in

subsection (a) are required, the following methods, incorporated by reference in Section

611.102, are to be used, except in cases where alternative methods have been

approved in accordance with Section 611.480:

“Procedures for Radiochemical Analysis of Nuclear Reactor Aqueous

Solutions”,” available from NTIS.

HASL Procedure Manual, HASL 300, available from ERDA Health and Safety

Laboratory.

For the purpose of monitoring radioactivity concentrations in drinking water, the

required sensitivity of the radioanalysis is defined in terms of a detection limit. The

detection limit must be that concentration which can be counted with a precision of plus

or minus 100 percent at the 95 percent confidence level (1.96 sigma where sigma is the

standard deviation of the net counting rate of the sample).

110

To determine compliance with Section 611.330(a)(b), (c), and (e), the

detection limit must not exceed 1 pCi/L. To determine compliance with Section

611.330(b) the detection limit must not exceed 3 pCi/L. the concentrations set

forth in the following table:

Contaminant

Detection Limit

Gross alpha particle

activity

3 pCi/L

Radium-226

1 pCi/L

Radium-228

1 pCi/L

Uranium

None

BOARD NOTE: Derived from 40 CFR 141.25(c) Table B, as added at 65

Fed. Reg. 76745 (December 7, 2000), effective December 8, 2003.

To determine compliance with Section 611.331 611.330(d), the detection limits

must not exceed the concentrations listed in that Section. the following table:

The detection limits for man-made beta particle and photon emitters to

determine the applicability of Section 611.881 are listed in the following table:

Radionuclide

Detection Limit

Tritium

1,000 pCi/L

Strontium-89

10 pCi/L

Strontium-90

2 pCi/L

Iodine-131

1 pCi/L

Cesium-134

10 pCi/L

Gross beta

4 pCi/L

Other radionuclides

1/10 of applicable limit

BOARD NOTE: Derived from 40 CFR 141.25(c) Table B (1998) C (2000),

as renumbered at 65 Fed. Reg. 76745 (December 7, 2000), effective

December 8, 2003.

To judge compliance with the MCLs listed in Sections Section 611.330 and 611.331,

averages of data must be used and must be rounded to the same number of significant

figures as the MCL for the substance in question.

BOARD NOTE: Derived from 40 CFR 141.25 (1998) (2000), as amended at 65

Fed. Reg. 76745 (December 7, 2000), effective December 8, 2003.

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

111

Section 611.731

Gross Alpha

Monitoring requirements for gross alpha particle activity, radium-226, and radium-228, and uranium are

as follows:

Effective December 8, 2003, a community water system (CWS) supplier must conduct

initial monitoring to determine compliance with Section 611.330(b), (c), and (e) by

December 31, 2007. For the purposes of monitoring for gross alpha particle activity,

radium-226, radium-228, uranium, and beta particle and photon radioactivity in drinking

water, “detection limit” is defined as in Section 611.720(c).

Applicability and sampling location for an existing CWS supplier. An existing

CWS supplier using groundwater, surface water, or both groundwater and

surface water (for the purpose of this Section hereafter referred to as a supplier)

must sample at every entry point to the distribution system that is representative

of all sources being used (hereafter called a sampling point) under normal

operating conditions. The supplier must take each sample at the same sampling

point unless conditions make another sampling point more representative of

each source or the Agency has designated a distribution system location, in

accordance with paragraph (a)(2)(B)(iii) of this Section.

Applicability and sampling location for a new CWS supplier. A new CWS

supplier or a CWS supplier that uses a new source of water must begin to

conduct initial monitoring for the new source within the first quarter after

initiating use of the source. A CWS supplier must conduct more frequent

monitoring when ordered by the Agency in the event of possible contamination

or when changes in the distribution system or treatment processes occur that

may increase the concentration of radioactivity in finished water.

Initial monitoring: Effective December 8, 2003, a CWS supplier must conduct initial

monitoring for gross alpha particle activity, radium-226, radium-228, and uranium as

follows:

A CWS supplier without acceptable historical data, as defined below, must

collect four consecutive quarterly samples at all sampling points before

December 31, 2007.

Grandfathering of data: A CWS supplier may use historical monitoring data

collected at a sampling point to satisfy the initial monitoring requirements for that

sampling point, under the following situations.

112

To satisfy initial monitoring requirements, a CWS supplier having only

one entry point to the distribution system may use the monitoring data

from the last compliance monitoring period that began between June

2000 and December 8, 2003.

To satisfy initial monitoring requirements, a CWS supplier with multiple

entry points and having appropriate historical monitoring data for each

entry point to the distribution system may use the monitoring data from

the last compliance monitoring period that began between June 2000

and December 8, 2003.

To satisfy initial monitoring requirements, a CWS supplier with

appropriate historical data for a representative point in the distribution

system may use the monitoring data from the last compliance monitoring

period that began between June 2000 and December 8, 2003,

provided that the Agency finds that the historical data satisfactorily

demonstrate that each entry point to the distribution system is expected

to be in compliance based upon the historical data and reasonable

assumptions about the variability of contaminant levels between entry

points. The Agency must make its finding in writing, by a SEP issued

pursuant to Section 611.110, indicating how the data conforms to the

requirements of this subsection (b)(2).

For gross alpha particle activity, uranium, radium-226, and radium-228

monitoring, the Agency may, by a SEP issued pursuant to Section 611.110,

waive the final two quarters of initial monitoring for a sampling point if the results

of the samples from the previous two quarters are below the detection limit.

If the average of the initial monitoring results for a sampling point is above the

MCL, the supplier must collect and analyze quarterly samples at that sampling

point until the system has results from four consecutive quarters that are at or

below the MCL, unless the supplier enters into another schedule as part of a

formal compliance agreement with the Agency.

Reduced monitoring: Effective December 8, 2003, the Agency may allow a CWS

supplier to reduce the future frequency of monitoring from once every three years to

once every six or nine years at each sampling point, based on the following criteria:

If the average of the initial monitoring results for each contaminant (i.e., gross

alpha particle activity, uranium, radium-226, or radium-228) is below the

detection limit specified in the table at Section 611.720(c)(1), the supplier must

collect and analyze for that contaminant using at least one sample at that

sampling point every nine years.

113

For gross alpha particle activity and uranium, if the average of the initial

monitoring results for each contaminant is at or above the detection limit but at

or below one-half the MCL, the supplier must collect and analyze for that

contaminant using at least one sample at that sampling point every six years.

For combined radium-226 and radium-228, the analytical results must be

combined. If the average of the combined initial monitoring results for radium-

226 and radium-228 is at or above the detection limit but at or below one-half

the MCL, the supplier must collect and analyze for that contaminant using at

least one sample at that sampling point every six years.

For gross alpha particle activity and uranium, if the average of the initial

monitoring results for each contaminant is above one-half the MCL but at or

below the MCL, the supplier must collect and analyze at least one sample at

that sampling point every three years. For combined radium-226 and radium-

228, the analytical results must be combined. If the average of the combined

initial monitoring results for radium-226 and radium-228 is above one-half the

MCL but at or below the MCL, the supplier must collect and analyze at least

one sample at that sampling point every three years.

A supplier must use the samples collected during the reduced monitoring period

to determine the monitoring frequency for subsequent monitoring periods (e.g.,

if a supplier's sampling point is on a nine year monitoring period, and the sample

result is above one-half the MCL, then the next monitoring period for that

sampling point is three years).

If a supplier has a monitoring result that exceeds the MCL while on reduced

monitoring, the supplier must collect and analyze quarterly samples at that

sampling point until the supplier has results from four consecutive quarters that

are below the MCL, unless the supplier enters into another schedule as part of a

formal compliance agreement with the Agency.

Compositing: Effective December 8, 2003, to fulfill quarterly monitoring requirements

for gross alpha particle activity, radium-226, radium-228, or uranium, a supplier may

composite up to four consecutive quarterly samples from a single entry point if analysis

is done within a year of the first sample. The analytical results from the composited

sample must be treated as the average analytical result to determine compliance with the

MCLs and the future monitoring frequency. If the analytical result from the composited

sample is greater than one-half the MCL, the Agency may, by a SEP issued pursuant to

Section 611.110, direct the supplier to take additional quarterly samples before

allowing the supplier to sample under a reduced monitoring schedule.

114

Effective December 8, 2003, a gross alpha particle activity measurement may be

substituted for the required radium-226 measurement, provided that the measured gross

alpha particle activity does not exceed 5 pCi/l. A gross alpha particle activity

measurement may be substituted for the required uranium measurement provided that

the measured gross alpha particle activity does not exceed 15 pCi/l.

The gross alpha measurement must have a confidence interval of 95% (1.65

where

is the standard deviation of the net counting rate of the sample) for

radium-226 and uranium.

When a supplier uses a gross alpha particle activity measurement in lieu of a

radium-226 or uranium measurement, the gross alpha particle activity analytical

result will be used to determine the future monitoring frequency for radium-226

and/or uranium.

If the gross alpha particle activity result is less than detection, one-half the

detection limit will be used to determine compliance and the future monitoring

frequency.

af)

Compliance Until December 8, 2003, compliance must be based on the analysis of an

annual composite of four consecutive quarterly samples or the average of the analyses

of four samples obtained at quarterly intervals.

A gross alpha particle activity measurement may be substituted for the required

radium-226 and radium-228 analysis, provided that the measured gross alpha

particle activity does not exceed 5 pCi/L at a confidence level of 95 percent

(1.65 sigma where sigma is the standard deviation of the net counting rate of the

sample). In localities where radium-228 may be present in drinking water, the

Agency may, by special exception permit, require radium-226 or radium-228

analyses if it determines that the gross alpha particle activity exceeds 2 pCi/L.

When the gross alpha particle activity exceeds 5 pCi/L, the same or an

equivalent sample must be analyzed for radium-226. If the concentration of

radium-226 exceeds 3 pCi/L the same or an equivalent sample must be

analyzed for radium-228.

bg)

See Section 611.100(e).

ch)

Until December 8, 2003, CWS suppliers must monitor at least once every four years

following the procedure required by subsection (a) of this Section. When an annual

record taken in conformance with subsection (a) of this Section has established that the

average annual concentration is less than half the MCLs established by Section

115

611.330, the Agency shall, by special exception permit, substitute analysis of a single

sample for the quarterly sampling procedure required by subsection (a) of this Section.

The Agency shall, by special exception permit, require more frequent monitoring

in the vicinity of mining or other operations that may contribute alpha particle

radioactivity to either surface or groundwater sources of drinking water.

A CWS supplier must monitor in conformance with subsection (a) of this

Section for one year after the introduction of a new water source. The Agency

shall, by special exception permit, require more frequent monitoring in the event

of possible contamination or when changes in the distribution system or

treatment process occur that may increase the concentration of radioactivity in

finished water.

The Agency shall, by special exception permit, require a CWS supplier using

two or more sources having different concentrations of radioactivity to monitor

source water, in addition to water from a free-flowing tap.

The Agency must not require monitoring for radium-228 to determine

compliance with Section 611.330 after the initial period, provided that the

average annual concentration of radium-228 has been assayed at least once

using the quarterly sampling procedure required by subsection (a) of this

Section.

The Agency must require the CWS supplier to conduct annual monitoring if the

radium-226 concentration exceeds 3 pCi/L.

di)

Until December 8, 2003, If the average annual MCL for gross alpha particle activity or

total radium as set forth in Section 611.330 is exceeded, the CWS supplier must give

notice to the Agency and notify the public as required by Subpart V. Monitoring at

quarterly intervals must be continued until the annual average concentration no longer

exceeds the MCL or until a monitoring schedule as a condition to a variance, adjusted

standard or enforcement action becomes effective.

BOARD NOTE: Derived Subsections (a) through (e) derive from 40 CFR 141.26(a) (1999) (2000),

as amended at 65 Fed. Reg. 26022, May 4, 2000 76745 (December 7, 2000), effective December 8,

2003. Subsections (f) through (i) derive from 40 CFR 141.26(a), as effective until December 8, 2003.

(Source: Amended at 25 Ill. Reg. ________ effective ______________________)

116

Section 611.732

Manmade Beta Particle and Photon Radioactivity

Monitoring and compliance requirements for manmade radioactivity in CWSs are as follows: To

determine compliance with the maximum contaminant levels in Section 611.330(d) for beta particle and

photon radioactivity, a supplier must monitor at a frequency as follows:

Effective December 8, 2003, a CWS supplier (either a surface water or groundwater

supplier) designated by the Agency, by a SEP issued pursuant to Section 611.110, as

vulnerable must sample for beta particle and photon radioactivity. A supplier must

collect quarterly samples for beta emitters and annual samples for tritium and strontium-

90 at each entry point to the distribution system (hereafter called a sampling point),

beginning within one quarter after being notified by the Agency. A supplier already

designated by the Agency must continue to sample until the Agency reviews and either

reaffirms or removes the designation, by a SEP issued pursuant to Section 611.110.

If the gross beta particle activity minus the naturally occurring potassium-40

beta particle activity at a sampling point has a running annual average (computed

quarterly) less than or equal to 50 pCi/L (screening level), the Agency may

reduce the frequency of monitoring at that sampling point to once every three

years. A supplier must collect all samples required in paragraph (b)(1) of this

Section during the reduced monitoring period.

For a supplier in the vicinity of a nuclear facility, the Agency may allow the

CWS supplier to utilize environmental surveillance data collected by the nuclear

facility in lieu of monitoring at the supplier's entry points, where the Agency

determines if such data is applicable to a particular water system, by a SEP

issued pursuant to Section 611.110. In the event that there is a release from a

nuclear facility, a supplier that is using surveillance data must begin monitoring at

the community water supplier's entry points in accordance with subsection

(b)(1) of this Section.

Effective December 8, 2003, a CWS supplier (either a surface water or ground water

supplier) designated by the Agency, by a SEP issued pursuant to Section 611.110, as

utilizing waters contaminated by effluents from nuclear facilities must sample for beta

particle and photon radioactivity. A supplier must collect quarterly samples for beta

emitters and iodine-131 and annual samples for tritium and strontium-90 at each entry

point to the distribution system (hereafter called a sampling point), beginning within one

quarter after being notified by the Agency. A supplier already designated by the

Agency as a supplier using waters contaminated by effluents from nuclear facilities must

continue to sample until the Agency reviews and either reaffirms or removes the

designation, by a SEP issued pursuant to Section 611.110.

117

Quarterly monitoring for gross beta particle activity must be based on the

analysis of monthly samples or the analysis of a composite of three monthly

samples.

BOARD NOTE: In corresponding 40 CFR 141.26(b)(2)(i), USEPA

recommends the use of a composite of three monthly samples.

For iodine-131, a composite of five consecutive daily samples must be analyzed

once each quarter. The Agency may, by a SEP issued pursuant to Section

611.110, order more frequent monitoring for iodine-131 where it is identified in

the finished water.

Annual monitoring for strontium-90 and tritium must be conducted by means of

the analysis of a composite of four consecutive quarterly samples or analysis of

four quarterly samples.

BOARD NOTE: In corresponding 40 CFR 141.26(b)(2)(iii), USEPA

recommends the analysis of four consecutive quarterly samples.

If the gross beta particle activity beta minus the naturally occurring potassium-

40 beta particle activity at a sampling point has a running annual average

(computed quarterly) less than or equal to 15 pCi/L, the Agency may, by a SEP

issued pursuant to Section 611.110, reduce the frequency of monitoring at that

sampling point to once every three years. The supplier must collect all samples

required in Section 611.732(b) during the reduced monitoring period.

For a supplier in the vicinity of a nuclear facility, the Agency may allow the

CWS to utilize environmental surveillance data collected by the nuclear facility in

lieu of monitoring at the system's entry points, where the Agency determines, by

a SEP issued pursuant to Section 611.110, that such data is applicable to the

particular water system. In the event that there is a release from a nuclear

facility, a supplier that uses such surveillance data must begin monitoring at the

CWS's entry points in accordance with Section 611.732(b).

Effective December 8, 2003, a CWS supplier designated by the Agency to monitor for

beta particle and photon radioactivity can not apply to the Agency for a waiver from the

monitoring frequencies specified in Section 611.732(a) or (b).

Effective December 8, 2003, a CWS supplier may analyze for naturally occurring

potassium-40 beta particle activity from the same or equivalent sample used for the

gross beta particle activity analysis. A supplier is allowed to subtract the potassium-40

beta particle activity value from the total gross beta particle activity value to determine if

the screening level is exceeded. The potassium-40 beta particle activity must be

118

calculated by multiplying elemental potassium concentrations (in mg/L) by a factor of

0.82.

Effective December 8, 2003, if the gross beta particle activity minus the naturally

occurring potassium-40 beta particle activity exceeds the screening level, an analysis of

the sample must be performed to identify the major radioactive constituents present in

the sample and the appropriate doses must be calculated and summed to determine

compliance with Section 611.330(d)(1), using the formula in Section 611.330(d)(2).

Doses must also be calculated and combined for measured levels of tritium and

strontium to determine compliance.

Effective December 8, 2003, a supplier must monitor monthly at the sampling points

that exceeds the maximum contaminant level in Section 611.330(d) beginning the month

after the exceedence occurs. A supplier must continue monthly monitoring until the

supplier has established, by a rolling average of three monthly samples, that the MCL is

being met. A supplier that establishes that the MCL is being met must return to

quarterly monitoring until it meets the requirements set forth in Section 611.732(a)(2) or

(b)(1).

ag)

Until December 8, 2003, CWSs using surface water sources and serving more than

100,000 persons and such other CWSs as the Agency, by special exception permit,

requires must monitor for compliance with Section 611.331 by analysis of a composite

of four consecutive quarterly samples or analysis of four quarterly samples. Compliance

with Section 611.331 is assumed without further analysis if the average annual

concentration of gross beta particle activity is less than 50 pCi/L and if the average

annual concentrations of tritium and strontium-90 are less than those listed in Section

611.331, provided that if both radionuclides are present the sum of their annual dose

equivalents to bone marrow must not exceed 4 millirem/year.

If the gross beta particle activity exceeds 50 pCi/L, an analysis of the sample

must be performed to identify the major radioactive constituents present and the

appropriate organ and total body doses must be calculated to determine

compliance with Section 611.331.

If the MCLs are exceeded, the Agency shall, by special exception permit,

require the supplier to conduct additional monitoring to determine the

concentration of man-made radioactivity in principal watersheds.

The Agency shall, pursuant to subsection (d), by special exception permit,

require suppliers of water utilizing only groundwater to monitor for man-made

radioactivity.

bh)

See Section 611.100(e).

119

ci)

Until December 8, 2003, CWS suppliers shall monitor at least every four years

following the procedure in subsection (a).

dj)

The Until December 8, 2003, the Agency shall, by special exception permit, require any

CWS supplier utilizing waters contaminated by effluents from nuclear facilities to initiate

quarterly monitoring for gross beta particle and iodine-131 radioactivity and annual

monitoring for strontium-90 and tritium.

Quarterly monitoring for gross beta particle activity must be based on the

analysis of monthly samples or the analysis of a composite of three monthly

samples. If the gross beta particle activity in a sample exceeds 15 pCi/L, the

same or an equivalent sample must be analyzed for strontium-89 and cesium-

134. If the gross beta particle activity exceeds 50 pCi/L, an analysis of the

sample must be performed to identify the major radioactive constitutents present

and the appropriate organ and total body doses must be calculated to determine

compliance with Section 611.331.

For iodine-131, a composite of five consecutive daily samples must be analyzed

once each quarter. The Agency shall, by special exception permit, require more

frequent monitoring when iodine-131 is identified in the finished water.

The Agency shall, by special exception permit, require annual monitoring for

strontium-90 and tritium by means of the analysis of a composite of four

consecutive quarterly samples or analysis of four quarterly samples.

The Agency shall, by special exception permit, allow the substitution of

environmental surveillance data taken in conjunction with a nuclear facility for

direct monitoring of manmade radioactivity by the supplier where the Agency

determines such data is applicable to the CWS.

ek)

If Until December 8, 2003, if the average annual MCL for man-made radioactivity set

forth in Section 611.331 is exceeded, the CWS supplier shall give notice to the Agency

and to the public as required by Subpart T. Monitoring at monthly intervals must be

continued until the concentration no longer exceeds the MCL or until a monitoring

schedule as a condition to a variance, adjusted standard or enforcement action becomes

effective.

BOARD NOTE: Derived Subsections (a) through (f) derive from 40 CFR 141.26(b) (1999) (2000),

as amended at 65 Fed. Reg. 26022, May 4, 2000 76745 (December 7, 2000), effective December 8,

2003. Subsections (g) through (k) derive from 40 CFR 141.26(b), as effective until December 8,

2003.

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(Source: Amended at 25 Ill. Reg. ________ effective ______________________)

Section 611.733

General Monitoring and Compliance Requirements

The following requirements apply effective December 8, 2003:

The Agency may, by a SEP issued pursuant to Section 611.110, require more frequent

monitoring than specified in Sections 611.731 and 611.732 require confirmation

samples. The results of the initial and confirmation samples will be averaged for use in a

compliance determination.

Each PWS supplier must monitor at the time designated by the Agency during each

compliance period.

Compliance: compliance with Section 611.330(b) through (e) must be determined

based on the analytical results obtained at each sampling point. If one sampling point is

in violation of an MCL, the supplier is in violation of the MCL.

For a supplier monitoring more than once per year, compliance with the MCL is

determined by a running annual average at each sampling point. If the average

of any sampling point is greater than the MCL, then the supplier is out of

compliance with the MCL.

For a supplier monitoring more than once per year, if any sample result would

cause the running average to exceed the MCL at any single sampling point, the

supplier is immediately out of compliance with the MCL.

a supplier must include all samples taken and analyzed under the provisions of

this Section and Sections 611.731 and 611.732 in determining compliance,

even if that number is greater than the minimum required.

If a supplier does not collect all required samples when compliance is based on

a running annual average of quarterly samples, compliance will be based on the

running average of the samples collected.

If a sample result is less than the detection limit, zero will be used to calculate

the annual average, unless a gross alpha particle activity is being used in lieu of

radium-226 and/or uranium. If the gross alpha particle activity result is less than

detection, one-half the detection limit will be used to calculate the annual

average.

The Agency may, by a SEP issued pursuant to Section 611.110, allow the supplier to

delete results of obvious sampling or analytic errors.

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If the MCL for radioactivity set forth in Section 611.330 (b) through (e) is exceeded,

the operator of a CWS must give notice to the Agency pursuant to Section 611.840

and to the public as required by Subpart V of this Part.

BOARD NOTE: Derived from 40 CFR 141.26(c), as added at 65 Fed. Reg. 76745 (December 7,

2000), effective December 8, 2003.

(Source: Added at 25 Ill. Reg. ________ effective ______________________)

SUBPART Q: RADIOLOGICAL MONITORING AND ANALYTICAL

REQUIREMENTS

Section 611.745

Reporting and Recordkeeping Requirements

In addition to the reporting and recordkeeping requirements in Sections 611.261 and 611.262, a public

water system subject to the requirements of this Subpart that provides conventional filtration treatment

or direct filtration must report monthly to the Agency the information specified in subsections (a) and (b)

of this Section beginning January 1, 2002. In addition to the reporting and recordkeeping requirements

in Sections 611.261 and 611.262, a public water system subject to the requirements of this Subpart

that provides filtration approved under Section 611.743(b) must report monthly to the Agency the

information specified in subsection (a) of this Section beginning January 1, 2002. The reporting in

subsection (a) of this Section is in lieu of the reporting specified in Section 611.262(a).

Turbidity measurements, as required by Section 611.743, must be reported within ten

days after the end of each month the system serves water to the public. Information that

must be reported is the following:

The total number of filtered water turbidity measurements taken during the

month.

The number and percentage of filtered water turbidity measurements taken

during the month which that are less than or equal to the turbidity limits specified

in Section 611.743 (a) or (b).

The date and value of any turbidity measurements taken during the month that

exceed 1 NTU for systems using conventional filtration treatment or direct

filtration, or that exceed the maximum level under Section 611.743(b).

Systems must maintain the results of individual filter monitoring taken under Section

611.744 for at least three years. Systems must report that they have conducted

individual filter turbidity monitoring under Section 611.744 within ten days after the end

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of each month the system serves water to the public. Systems must report individual

filter turbidity measurement results taken under Section 611.744 within ten days after

the end of each month the system serves water to the public only if measurements

demonstrate one or more of the conditions in subsections (b)(1) through (4) of this

Section. Systems that use lime softening may apply to the Agency for alternative

exceedence levels for the levels specified in subsections (b)(1) through (4) of this

Section if they can demonstrate that higher turbidity levels in individual filters are due to

lime carryover only and not due to degraded filter performance.

For any individual filter that has a measured turbidity level of greater than 1.0

NTU in two consecutive measurements taken 15 minutes apart, the system must

report the filter number, the turbidity measurement, and the dates on which the

exceedence occurred. In addition, the system must either produce a filter

profile for the filter within seven days after the exceedence (if the system is not

able to identify an obvious reason for the abnormal filter performance) and

report that the profile has been produced or report the obvious reason for the

exceedence.

For any individual filter that has a measured turbidity level of greater than 0.5

NTU in two consecutive measurements taken 15 minutes apart at the end of the

first four hours of continuous filter operation after the filter has been

backwashed or otherwise taken offline, the system must report the filter

number, the turbidity, and the dates on which the exceedence occurred. In

addition, the system must either produce a filter profile for the filter within seven

days after the exceedence (if the system is not able to identify an obvious reason

for the abnormal filter performance) and report that the profile has been

produced or report the obvious reason for the exceedence.

For any individual filter that has a measured turbidity level of greater than 1.0

NTU in two consecutive measurements taken 15 minutes apart at any time in

each of three consecutive months, the system must report the filter number, the

turbidity measurement, and the dates on which the exceedence occurred. In

addition, the system must conduct a self-assessment of the filter within 14 days

after the exceedence and report that the self-assessment was conducted. The

self-assessment must consist of at least the following components: assessment

of filter performance; development of a filter profile; identification and

prioritization of factors limiting filter performance; assessment of the applicability

of corrections; and preparation of a filter self-assessment report.

For any individual filter that has a measured turbidity level of greater than 2.0

NTU in two consecutive measurements taken 15 minutes apart at any time in

each of two consecutive months, the system must report the filter number, the

turbidity measurement, and the dates on which the exceedence occurred. In

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addition, the system must arrange for the conduct of a comprehensive

performance evaluation by the Agency or a third party approved by the Agency

no later than 30 days following the exceedence and have the evaluation

completed and submitted to the Agency no later than 90 days following the

exceedence.

Additional reporting requirements.

If at any time the turbidity exceeds 1 NTU in representative samples of filtered

water in a system using conventional filtration treatment or direct filtration, the

supplier must consult with the Agency as soon as practical, but no later than 24

hours after the exceedance exceedence is known, in accordance with the public

notification requirements under Section 611.903(b)(3).

If at any time the turbidity in representative samples of filtered water exceeds

the maximum level set by the Agency under Section 611.743(b) for filtration

technologies other than conventional filtration treatment, direct filtration, slow

sand filtration, or diatomaceous earth filtration, the supplier must consult with the

Agency as soon as practical, but no later than 24 hours after the exceedance is

known, in accordance with the public notification requirements under Section

611.903(b)(3).

BOARD NOTE: Derived from 40 CFR 141.175 (1999), as amended at 65 Fed. Reg. 26035 (May 4,

2000) (2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

SUBPART V: PUBLIC NOTIFICATION OF DRINKING WATER

VIOLATIONS

Section 611.901

General Public Notification Requirements

The requirements of this Subpart V replace former notice requirements.

Who must give public notice. Each owner or operator of a public water system (a

CWS, an NTNCWS, or a transient non-CWS) must give notice for all violations of an

NPDWR and for other situations, as listed in this subsection (a). The term “NPDWR

violation” is used in this Subpart V to include violations of an MCL, an MRDL, a

treatment technique, monitoring requirements, or a testing procedure set forth in this

Part. Appendix G to this Part identifies the tier assignment for each specific violation or

situation requiring a public notice.

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NPDWR violations:

A failure to comply with an applicable MCL or MRDL.

A failure to comply with a prescribed treatment technique.

A failure to perform water quality monitoring, as required by this Part.

A failure to comply with testing procedures as prescribed by this Part.

Relief equivalent to a variance and exemptions under sections 1415 and 1416

of SDWA:

Operation under relief equivalent to a SDWA Section 1415 variance,

under Section 611.111, or a SDWA Section 1416 exemption, under

Section 611.112.

A failure to comply with the requirements of any schedule that has been

set under relief equivalent to a SDWA Section 1415 variance, under

Section 611.111, or a SDWA Section 1415 exemption, under Section

611.112.

Special public notices:

The occurrence of a waterborne disease outbreak or other waterborne

emergency.

An exceedance exceedence of the nitrate MCL by a non-CWS, where

granted permission by the Agency under Section 611.300(d).

An exceedance exceedence of the secondary fluoride standard of

Section 611.858.

The availability of unregulated contaminant monitoring data.

Other violations and situations determined by the Agency by a SEP

issued pursuant to Section 611.110 to require a public notice under this

Subpart, not already listed in Appendix G.

The type of public notice required for each violation or situation. The public notice

requirements of this Subpart V are divided into three tiers, to take into account the

seriousness of the violation or situation and of any potential adverse health effects that

may be involved. The public notice requirements for each violation or situation listed in

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subsection (a) of this Section are determined by the tier to which it is assigned. This

subsection (b) provides the definition of each tier. Appendix G of this Part identifies the

tier assignment for each specific violation or situation.

Tier 1 public notice: required for NPDWR violations and situations with

significant potential to have serious adverse effects on human health as a result

of short-term exposure.

Tier 2 public notice: required for all other NPDWR violations and situations

with potential to have serious adverse effects on human health.

Tier 3 public notice: required for all other NPDWR violations and situations not

included in Tier 1 and Tier 2.

Who must receive notice.

Each PWS supplier must provide public notice to persons served by the water

supplier, in accordance with this Subpart V. A PWS supplier that sells or

otherwise provides drinking water to another PWS supplier (i.e., to a

consecutive system) is required to give public notice to the owner or operator of

the consecutive system; the consecutive system supplier is responsible for

providing public notice to the persons it serves.

If a PWS supplier has a violation in a portion of the distribution system that is

physically or hydraulically isolated from other parts of the distribution system,

the Agency may allow the system to limit distribution of the public notice to only

persons served by that portion of the system which that is out of compliance.

Permission by the Agency for limiting distribution of the notice must be granted

in writing, by a SEP granted pursuant to Section 611.110.

A copy of the notice must also be sent to the Agency, in accordance with the

requirements under Section 611.840(d).

BOARD NOTE: Derived from 40 CFR 141.201, as added at 65 Fed. Reg. 26035 (May 4, 2000)

(2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

Section 611.902

Tier 1 Public Notice--Form, Manner, and Frequency of Notice

Violations or situations that require a Tier 1 public notice. This subsection (a) lists the

violation categories and other situations requiring a Tier 1 public notice. Appendix G of

this Part identifies the tier assignment for each specific violation or situation.

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Violation of the MCL for total coliforms when fecal coliform or E. coli are

present in the water distribution system (as specified in Section 611.325(b)), or

when the water supplier fails to test for fecal coliforms or E. coli when any

repeat sample tests positive for coliform (as specified in Section 611.525);

Violation of the MCL for nitrate, nitrite, or total nitrate and nitrite, as defined in

Section 611.301, or when the water supplier fails to take a confirmation sample

within 24 hours after the supplier’s receipt of the results from the first sample

showing an exceedance exceedence of the nitrate or nitrite MCL, as specified in

Section 611.606(b);

Exceedance Exceedence of the nitrate MCL by a non-CWS supplier, where

permitted to exceed the MCL by the Agency under Section 611.300(d), as

required under Section 611.909;

Violation of the MRDL for chlorine dioxide, as defined in Section 611.313(a),

when one or more samples taken in the distribution system the day following an

exceedance exceedence of the MRDL at the entrance of the distribution system

exceed the MRDL, or when the water supplier does not take the required

samples in the distribution system, as specified in Section 611.383(c)(2)(A);

Violation of the turbidity MCL under Section 141.13(b), where the Agency

determines after consultation that a Tier 1 notice is required or where

consultation does not take place within 24 hours after the supplier learns of the

violation;

Violation of the Surface Water Treatment Rule (SWTR) or Interim Enhanced

Surface Water Treatment Rule (IESWTR) treatment technique requirement

resulting from a single exceedance exceedence of the maximum allowable

turbidity limit (as identified in Appendix G), where the primacy agency

determines after consultation that a Tier 1 notice is required or where

consultation does not take place within 24 hours after the supplier learns of the

violation;

Occurrence of a waterborne disease outbreak, as defined in Section 611.101,

or other waterborne emergency (such as a failure or significant interruption in

key water treatment processes, a natural disaster that disrupts the water supply

or distribution system, or a chemical spill or unexpected loading of possible

pathogens into the source water that significantly increases the potential for

drinking water contamination);

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Other violations or situations with significant potential to have serious adverse

effects on human health as a result of short-term exposure, as determined by the

Agency by a SEP issued pursuant to Section 611.110.

When the Tier 1 public notice is to be provided. Additional steps required. A PWS

supplier must:

Provide a public notice as soon as practical but no later than 24 hours after the

supplier learns of the violation;

Initiate consultation with the Agency as soon as practical, but no later than 24

hours after the PWS supplier learns of the violation or situation, to determine

additional public notice requirements; and

Comply with any additional public notification requirements (including any

repeat notices or direction on the duration of the posted notices) that are

established as a result of the consultation with the Agency. Such requirements

may include the timing, form, manner, frequency, and content of repeat notices

(if any) and other actions designed to reach all persons served.

The form and manner of the public notice. A PWS supllier must provide the notice

within 24 hours in a form and manner reasonably calculated to reach all persons served.

The form and manner used by the PWS supplier are to fit the specific situation, but must

be designed to reach residential, transient, and non-transient users of the water system.

In order to reach all persons served, a water supplier is to use, at a minimum, one or

more of the following forms of delivery:

Appropriate broadcast media (such as radio and television);

Posting of the notice in conspicuous locations throughout the area served by the

water supplier;

Hand delivery of the notice to persons served by the water supplier; or

Another delivery method approved in writing by the Agency by a SEP issued

pursuant to Section 611.110.

BOARD NOTE: Derived from 40 CFR 141.202, as added at 65 Fed. Reg. 26036 (May 4, 2000)

(2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

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Section 611.903

Tier 2 Public Notice--Form, Manner, and Frequency of Notice

Violations or situations that require a Tier 2 public notice. This subsection lists the

violation categories and other situations requiring a Tier 2 public notice. Appendix G to

this Part identifies the tier assignment for each specific violation or situation.

All violations of the MCL, MRDL, and treatment technique requirements,

except where a Tier 1 notice is required under Section 611.902(a) or where

the Agency determines by a SEP issued pursuant to Section 611.110 that a Tier

1 notice is required;

Violations of the monitoring and testing procedure requirements, where the

Agency determines by a SEP issued pursuant to Section 611.110 that a Tier 2

rather than a Tier 3 public notice is required, taking into account potential health

impacts and persistence of the violation; and

Failure to comply with the terms and conditions of any relief equivalent to a

SDWA Section 1415 variance or a SDWA Section 1416 exemption in place.

When Tier 2 public notice is to be provided.

A PWS supplier must provide the public notice as soon as practical, but no

later than 30 days after the supplier learns of the violation. If the public notice is

posted, the notice must remain in place for as long as the violation or situation

persists, but in no case for less than seven days, even if the violation or situation

is resolved. The Agency may, in appropriate circumstances, by a SEP issued

pursuant to Section 611.110, allow additional time for the initial notice of up to

three months from the date the supplier learns of the violation. It is not

appropriate for the Agency to grant an extension to the 30-day deadline for any

unresolved violation or to allow across-the-board extensions by rule or policy

for other violations or situations requiring a Tier 2 public notice. Extensions

granted by the Agency must be in writing.

The PWS supplier must repeat the notice every three months as long as the

violation or situation persists, unless the Agency determines that appropriate

circumstances warrant a different repeat notice frequency. In no circumstance

may the repeat notice be given less frequently than once per year. It is not

appropriate for the Agency to allow less frequent repeat notice for an MCL

violation under the Total Coliform Rule or a treatment technique violation under

the Surface Water Treatment Rule or Interim Enhanced Surface Water

Treatment Rule. It is also not appropriate for the Agency to allow across-the-

board reductions in the repeat notice frequency for other ongoing violations

requiring a Tier 2 repeat notice. An Agency determination allowing repeat

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notices to be given less frequently than once every three months must be in

writing.

For the turbidity violations specified in this subsection (b)(3), a PWS supplier

must consult with the Agency as soon as practical but no later than 24 hours

after the supplier learns of the violation, to determine whether a Tier 1 public

notice under Section 611.902(a) is required to protect public health. When

consultation does not take place within the 24-hour period, the water system

must distribute a Tier 1 notice of the violation within the next 24 hours (i.e., no

later than 48 hours after the supplier learns of the violation), following the

requirements under Section 611.902(b) and (c). Consultation with the Agency

is required for the following:

Violation of the turbidity MCL under Section 141.320(b); or

Violation of the SWTR or IESWTR treatment technique requirement

resulting from a single exceedance exceedence of the maximum

allowable turbidity limit.

The form and manner of Tier 2 public notice. A PWS supplier must provide the initial

public notice and any repeat notices in a form and manner that is reasonably calculated

to reach persons served in the required time period. The form and manner of the public

notice may vary based on the specific situation and type of water system, but it must at

a minimum meet the following requirements:

Unless directed otherwise by the Agency in writing, by a SEP issued pursuant

to Section 611.110, a CWS supplier must provide notice by:

Mail or other direct delivery to each customer receiving a bill and to

other service connections to which water is delivered by the PWS

supplier; and

Any other method reasonably calculated to reach other persons

regularly served by the supplier, if they would not normally be reached

by the notice required in subsection (c)(1)(A) of this Section. Such

persons may include those who do not pay water bills or do not have

service connection addresses (e.g., house renters, apartment dwellers,

university students, nursing home patients, prison inmates, etc.). Other

methods may include: Publication in a local newspaper; delivery of

multiple copies for distribution by customers that provide their drinking

water to others (e.g., apartment building owners or large private

employers); posting in public places served by the supplier or on the

Internet; or delivery to community organizations.

130

Unless directed otherwise by the Agency in writing, by a SEP issued pursuant

to Section 611.110, a non-CWS supplier must provide notice by the following:

Posting the notice in conspicuous locations throughout the distribution

system frequented by persons served by the supplier, or by mail or

direct delivery to each customer and service connection (where

known); and

Any other method reasonably calculated to reach other persons served

by the system if they would not normally be reached by the notice

required in subsection (c)(2)(A) of this Section. Such persons may

include those served who may not see a posted notice because the

posted notice is not in a location they routinely pass by. Other methods

may include the following: Publication in a local newspaper or

newsletter distributed to customers; use of E-mail to notify employees

or students; or delivery of multiple copies in central locations (e.g.,

community centers).

BOARD NOTE: Derived from 40 CFR 141.203, as added at 65 Fed. Reg. 26036 (May 4, 2000)

(2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

Section 611.904

Tier 3 Public Notice--Form, Manner, and Frequency of Notice

Violations or situations that require a Tier 3 public notice. This subsection (a) lists the

violation categories and other situations requiring a Tier 3 public notice. Appendix G of

this Part identifies the tier assignment for each specific violation or situation.

Monitoring violations under this Part, except where a Tier 1 notice is required

under Section 611.902(a) or where the Agency determines by a SEP issued

pursuant to Section 611.110 that a Tier 2 notice is required;

Failure to comply with a testing procedure established in this Part, except where

a Tier 1 notice is required under Section 611.902(a) or where the Agency

determines by a SEP issued pursuant to Section 611.110 that a Tier 2 notice is

required;

Operation under relief equivalent to a SDWA Section 1415 variance granted

under Section 611.111 or relief equivalent to a SDWA Section 1416

exemption granted under Section 611.112;

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Availability of unregulated contaminant monitoring results, as required under

Section 611.907; and

Exceedance Exceedence of the secondary standard for fluoride under Section

611.858, as required under Section 611.908.

When the Tier 3 public notice is to be provided.

A PWS supplier must provide the public notice not later than one year after the

supplier learns of the violation or situation or begins operating under relief

equivalent to a SDWA Section 1415 variance or Section 1416 exemption.

Following the initial notice, the supplier must repeat the notice annually for as

long as the violation, relief equivalent to a SDWA Section 1415 variance or

Section 1416 exemption, or other situation persists. If the public notice is

posted, the notice must remain in place for as long as the violation, relief

equivalent to a SDWA Section 1415 variance or Section 1416 exemption, or

other situation persists, but in no case less than seven days (even if the violation

or situation is resolved).

Instead of individual Tier 3 public notices, a PWS supplier may use an annual

report detailing all violations and situations that occurred during the previous

twelve months, as long as the timing requirements of subsection (b)(1) of this

Section are met.

The form and manner of the Tier 3 public notice. A PWS supplier must provide the

initial notice and any repeat notices in a form and manner that is reasonably calculated to

reach persons served in the required time period. The form and manner of the public

notice may vary based on the specific situation and type of water system, but it must at

a minimum meet the following requirements:

Unless directed otherwise by the Agency by a SEP issued pursuant to Section

611.110 in writing, a CWS supplier must provide notice by the following:

Mail or other direct delivery to each customer receiving a bill and to

other service connections to which water is delivered by the supplier;

and

Any other method reasonably calculated to reach other persons

regularly served by the supplier, if they would not normally be reached

by the notice required in subsection (c)(1)(A) of this Section. Such

persons may include those who do not pay water bills or do not have

service connection addresses (e.g., house renters, apartment dwellers,

university students, nursing home patients, prison inmates, etc.). Other

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methods may include the following: publication in a local newspaper;

delivery of multiple copies for distribution by customers that provide

their drinking water to others (e.g., apartment building owners or large

private employers); posting in public places or on the Internet; or

delivery to community organizations.

Unless directed otherwise by the Agency by a SEP issued pursuant to Section

611.110 in writing, a non-CWS supplier must provide notice by the following:

Posting the notice in conspicuous locations throughout the distribution

system frequented by persons served by the supplier, or by mail or

direct delivery to each customer and service connection (where

known); and

Any other method reasonably calculated to reach other persons served

by the supplier, if they would not normally be reached by the notice

required in subsection (c)(2)(A) of this Section. Such persons may

include those who may not see a posted notice because the notice is not

in a location they routinely pass by. Other methods may include the

following: publication in a local newspaper or newsletter distributed to

customers; use of E-mail to notify employees or students; or delivery of

multiple copies in central locations (e.g., community centers).

When the Consumer Confidence Report may be used to meet the Tier 3 public notice

requirements. For a CWS supplier, the Consumer Confidence Report (CCR) required

under Subpart U of this Part may be used as a vehicle for the initial Tier 3 public notice

and all required repeat notices, as long as the following is true:

The CCR is provided to persons served no later than 12 months after the

supplier learns of the violation or situation as required under Section

611.904(b);

The Tier 3 notice contained in the CCR follows the content requirements under

Section 611.905; and

The CCR is distributed following the delivery requirements under Section

611.904(c).

BOARD NOTE: Derived from 40 CFR 141.204, as added at 65 Fed. Reg. 26037 (May 4, 2000)

(2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

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Section 611.908

Special Notice for Exceedance Exceedence of the Fluoride Secondary

Standard

When to give special notice. A CWS supplier that exceeds the fluoride secondary

standard (SMCL) of 2 mg/L, as specified in Section 611.858 (determined by the last

single sample taken in accordance with Section 611.603), but does not exceed the

maximum contaminant level (MCL) of 4 mg/L for fluoride (as specified in Section

611.301), must provide the public notice in subsection (c) of this Section to persons

served. Public notice must be provided as soon as practical but no later than 12 months

from the day the supplier learns of the exceedance exceedence. A copy of the notice

must also be sent to all new billing units and new customers at the time service begins

and to the Department of Pubic Health. The PWS supplier must repeat the notice at

least annually for as long as the SMCL is exceeded. If the public notice is posted, the

notice must remain in place for as long as the fluoride SMCL is exceeded, but in no

case less than seven days (even if the exceedance exceedence is eliminated). On a

case-by-case basis, the Agency may require an initial notice sooner than 12 months and

repeat notices more frequently than annually.

The form and manner of a special notice. The form and manner of the public notice

(including repeat notices) must follow the requirements for a Tier 3 public notice in

Section 611.904(c), (d)(1), and (d)(3).

Mandatory language in a special notice. The notice must contain the following language,

including the language necessary to fill in the blanks:

This is an alert about your drinking water and a cosmetic dental problem that

might affect children under nine years of age. At low levels, fluoride can help

prevent cavities, but children drinking water containing more than 2 milligrams

per liter (mg/L) of fluoride may develop cosmetic discoloration of their

permanent teeth (dental fluorosis). The drinking water provided by your

community water system [name] has a fluoride concentration of [insert value]

mg/L. Dental fluorosis, in its moderate or severe forms, may result in a brown

staining and/or pitting of the permanent teeth. This problem occurs only in

developing teeth, before they erupt from the gums. Children under nine should

be provided with alternative sources of drinking water or water that has been

treated to remove the fluoride to avoid the possibility of staining and pitting of

their permanent teeth. You may also want to contact your dentist about proper

use by young children of fluoride-containing products. Older children and

adults may safely drink the water.

Drinking water containing more than 4 mg/L of fluoride (the USEPA’s drinking

water standard) can increase your risk of developing bone disease. Your

drinking water does not contain more than 4 mg/L of fluoride, but we’re

134

required to notify you when we discover that the fluoride levels in your drinking

water exceed 2 mg/L because of this cosmetic dental problem.

For more information, please call [name of water system contact] of [name of

community water system] at [phone number]. Some home water treatment units

are also available to remove fluoride from drinking water. To learn more about

available home water treatment units, you may call NSF International at 1-877-

8-NSF-HELP.

BOARD NOTE: Derived from 40 CFR 141.208, as added at 65 Fed. Reg. 26039 (May 4, 2000)

(2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

Section 611.909

Special Notice for Nitrate Exceedances Exceedences above the MCL by a

Non-Community Water System

When the special notice is to be given. The owner or operator of a non-CWS supplier

granted permission by the Agency under Section 611.300(d) to exceed the nitrate

MCL must provide notice to persons served according to the requirements for a Tier 1

notice under Section 611.902(a) and (b).

The form and manner of the special notice. A non-CWS supplier granted permission

by the Agency to exceed the nitrate MCL under Section 611.300(d) must provide

continuous posting of the fact that nitrate levels exceed 10 mg/L and the potential health

effects of exposure, according to the requirements for Tier 1 notice delivery under

Section 611.902(c) and the content requirements under Section 611.905.

BOARD NOTE: Derived from 40 CFR 141.209, as added at 65 Fed. Reg. 26039 (May 4, 2000)

(2000).

(Source: Amended at 25 Ill. Reg. ________, effective ______________________)

Section 611.Appendix A

Regulated Contaminants

Microbiological contaminants:

Contaminant (units): Total Coliform Bacteria

Traditional MCL in mg/L: MCL: (systems that collect

40 samples/month) fewer than 5% of

monthly samples are positive; (systems that collect < 40 samples/month) fewer than 1

positive monthly sample.

To convert for CCR, multiply by: --

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MCL in CCR units: MCL: (systems that collect

40 samples/month) fewer than 5% of monthly

samples are positive; (systems that collect < 40 samples/month) fewer than 1 positive

monthly sample.

MCLG: 0

Major sources in drinking water: Naturally present in the environment.

Health effects language: Coliforms are bacteria that are naturally present in the environment and

are used as an indicator that other, potentially-harmful, bacteria may be present.

Coliforms were found in more samples than allowed and this was a warning of potential

problems.

Contaminant (units): Fecal coliform and E. coli

Traditional MCL in mg/L: 0

To convert for CCR, multiply by: --

MCL in CCR units: 0

MCLG: 0

Major sources in drinking water: Human and animal fecal waste.

Health effects language: Fecal coliforms and E. coli are bacteria whose presence indicates that

the water may be contaminated with human or animal wastes. Microbes in these wastes

can cause short-term effects, such as diarrhea, cramps, nausea, headaches, or other

symptoms. They may pose a special health risk for infants, young children, some of the

elderly, and people with severely-compromised immune systems.

Contaminant (units): Total organic carbon (ppm)

Traditional MCL in mg/L: TT

To convert for CCR, multiply by: --

MCL in CCR units: TT

MCLG: N/A

Major sources in drinking water: Naturally present in the environment.

Health effects language: Total organic carbon (TOC) has no health effects. However, total

organic carbon provides a medium for the formation of disinfection byproducts. These

byproducts include trihalomethanes (THMs) and haloacetic acids (HAAs). Drinking

water containing these byproducts in excess of the MCL may lead to adverse health

effects, liver or kidney problems, or nervous system effects, and may lead to an

increased risk of getting cancer.

Contaminant (units): Turbidity (NTU)

Traditional MCL in mg/L: TT

To convert for CCR, multiply by: --

MCL in CCR units: TT

MCLG: N/A

Major sources in drinking water: Soil runoff.

Health effects language: Turbidity has no health effects. However, turbidity can interfere with

disinfection and provide a medium for microbial growth. Turbidity may indicate the

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presence of disease-causing organisms. These organisms include bacteria, viruses, and

parasites that can cause symptoms such as nausea, cramps, diarrhea, and associated

headaches.

Radioactive contaminants:

Contaminant (units): Beta/photon emitters (mrem/yr)

Traditional MCL in mg/L: 4 mrem/yr

To convert for CCR, multiply by: --

MCL in CCR units: 4

MCLG: N/A 0

Major sources in drinking water: Decay of natural and man-made deposits.

Health effects language: Certain minerals are radioactive and may emit forms of radiation

known as photons and beta radiation. Some people who drink water containing beta

particle and photon emitters radioactivity in excess of the MCL over many years may

have an increased risk of getting cancer.

Contaminant (units): Alpha emitters (pCi/L).

Traditional MCL in mg/L: 15 pCi/L

To convert for CCR, multiply by: --

MCL in CCR units: 15

MCLG: N/A 0

Major sources in drinking water: Erosion of natural deposits.

Health effects language: Certain minerals are radioactive and may emit a form of radiation

known as alpha radiation. Some people who drink water containing alpha emitters in

excess of the MCL over many years may have an increased risk of getting cancer.

Contaminant (units): Combined radium (pCi/L)

Traditional MCL in mg/L: 5 pCi/L

To convert for CCR, multiply by: --

MCL in CCR units: 5

MCLG: N/A 0

Major sources in drinking water: Erosion of natural deposits.

Health effects language: Some people who drink water containing radium 226 or 228 radium-

226 or -228 in excess of the MCL over many years may have an increased risk of

getting cancer.

Contaminant (units): Uranium (

g/L).

Traditional MCL in mg/L: 30

g/L

To convert for CCR, multiply by: --

MCL in CCR units: 30

MCLG: 0

Major sources in drinking water: Erosion of natural deposits.

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Health effects language: Some people who drink water containing uranium in excess of the

MCL over many years may have an increased risk of getting cancer and kidney toxicity.

Inorganic contaminants:

Contaminant (units): Antimony (ppb)

Traditional MCL in mg/L: 0.006

To convert for CCR, multiply by: 1000

MCL in CCR units: 6

MCLG: 6

Major sources in drinking water: Discharge from petroleum refineries; fire retardants; ceramics;

electronics; solder.

Health effects language: Some people who drink water containing antimony well in excess of

the MCL over many years could experience increases in blood cholesterol and

decreases in blood sugar.

Contaminant (units): Arsenic (ppb)

Traditional MCL in mg/L: 0.05

To convert for CCR, multiply by: 1000

MCL in CCR units: 50

MCLG: N/A

Major sources in drinking water: Erosion of natural deposits; runoff from orchards; runoff from

glass and electronics production wastes.

Health effects language: Some people who drink water containing arsenic in excess of the MCL

over many years could experience skin damage or problems with their circulatory

system, and may have an increased risk of getting cancer.

Contaminant (units): Asbestos (MFL)

Traditional MCL in mg/L: 7 MFL

To convert for CCR, multiply by: --

MCL in CCR units: 7

MCLG: 7

Major sources in drinking water: Decay of asbestos cement water mains; erosion of natural

deposits.

Health effects language: Some people who drink water containing asbestos in excess of the

MCL over many years may have an increased risk of developing benign intestinal

polyps.

Contaminant (units): Barium (ppm)

Traditional MCL in mg/L: 2

To convert for CCR, multiply by: --

MCL in CCR units: 2

MCLG: 2

138

Major sources in drinking water: Discharge of drilling wastes; discharge from metal refineries;

erosion of natural deposits.

Health effects language: Some people who drink water containing barium in excess of the MCL

over many years could experience an increase in their blood pressure.

Contaminant (units): Beryllium (ppb)

Traditional MCL in mg/L: 0.004

To convert for CCR, multiply by: 1000

MCL in CCR units: 4

MCLG: 4

Major sources in drinking water: Discharge from metal refineries and coal-burning factories;

discharge from electrical, aerospace, and defense industries.

Health effects language: Some people who drink water containing beryllium well in excess of

the MCL over many years could develop intestinal lesions.

Contaminant (units): Cadmium (ppb)

Traditional MCL in mg/L: 0.005

To convert for CCR, multiply by: 1000

MCL in CCR units: 5

MCLG: 5

Major sources in drinking water: Corrosion of galvanized pipes; erosion of natural deposits;

discharge from metal refineries; runoff from waste batteries and paints.

Health effects language: Some people who drink water containing cadmium in excess of the

MCL over many years could experience kidney damage.

Contaminant (units): Chromium (ppb)

Traditional MCL in mg/L: 0.1

To convert for CCR, multiply by: 1000

MCL in CCR units: 100

MCLG: 100

Major sources in drinking water: Discharge from steel and pulp mills; erosion of natural

deposits.

Health effects language: Some people who use water containing chromium well in excess of the

MCL over many years could experience allergic dermatitis.

Contaminant (units): Copper (ppm)

Traditional MCL in mg/L: AL=1.3

To convert for CCR, multiply by: --

MCL in CCR units: AL=1.3

MCLG: 1.3

Major sources in drinking water: Corrosion of household plumbing systems; erosion of natural

deposits; leaching from wood preservatives.

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Health effects language: Copper is an essential nutrient, but some people who drink water

containing copper in excess of the action level over a relatively short amount of time

could experience gastrointestinal distress. Some people who drink water containing

copper in excess of the action level over many years could suffer liver or kidney

damage. People with Wilson’s Disease should consult their personal doctor.

Contaminant (units): Cyanide (ppb)

Traditional MCL in mg/L: 0.2

To convert for CCR, multiply by: 1000

MCL in CCR units: 200

MCLG: 200

Major sources in drinking water: Discharge from steel/metal factories; discharge from plastic

and fertilizer factories.

Health effects language: Some people who drink water containing cyanide well in excess of the

MCL over many years could experience nerve damage or problems with their thyroid.

Contaminant (units): Fluoride (ppm)

Traditional MCL in mg/L: 4

To convert for CCR, multiply by: --

MCL in CCR units: 4

MCLG: 4

Major sources in drinking water: Erosion of natural deposits; water additive which promotes

strong teeth; discharge from fertilizer and aluminum factories.

Health effects language: Some people who drink water containing fluoride in excess of the

MCL over many years could get bone disease, including pain and tenderness of the

bones. Fluoride in drinking water at half the MCL or more may cause mottling of

children’s teeth, usually in children less than nine years old. Mottling, also known as

dental fluorosis, may include brown staining and/or pitting of the teeth, and occurs only

in developing teeth before they erupt from the gums.

Contaminant (units): Lead (ppb)

Traditional MCL in mg/L: AL=0.015

To convert for CCR, multiply by: 1000

MCL in CCR units: AL=15

MCLG: 0

Major sources in drinking water: Corrosion of household plumbing systems; erosion of natural

deposits.

Health effects language: Infants and children who drink water containing lead in excess of the

action level could experience delays in their physical or mental development. Children

could show slight deficits in attention span and learning abilities. Adults who drink this

water over many years could develop kidney problems or high blood pressure.

Contaminant (units): Mercury [inorganic] (ppb)

140

Traditional MCL in mg/L: 0.002

To convert for CCR, multiply by: 1000

MCL in CCR units: 2

MCLG: 2

Major sources in drinking water: Erosion of natural deposits; discharge from refineries and

factories; runoff from landfills; runoff from cropland.

Health effects language: Some people who drink water containing inorganic mercury well in

excess of the MCL over many years could experience kidney damage.

Contaminant (units): Nitrate (ppm)

Traditional MCL in mg/L: 10

To convert for CCR, multiply by: --

MCL in CCR units: 10

MCLG: 10

Major sources in drinking water: Runoff from fertilizer use; leaching from septic tanks, sewage;

erosion of natural deposits.

Health effects language: Infants below the age of six months who drink water containing nitrate

in excess of the MCL could become seriously ill and, if untreated, may die. Symptoms

include shortness of breath and blue baby syndrome.

Contaminant (units): Nitrite (ppm)

Traditional MCL in mg/L: 1

To convert for CCR, multiply by: --

MCL in CCR units: 1

MCLG: 1

Major sources in drinking water: Runoff from fertilizer use; leaching from septic tanks, sewage;

erosion of natural deposits.

Health effects language: Infants below the age of six months who drink water containing nitrite

in excess of the MCL could become seriously ill and, if untreated, may die. Symptoms

include shortness of breath and blue baby syndrome.

Contaminant (units): Selenium (ppb)

Traditional MCL in mg/L: 0.05

To convert for CCR, multiply by: 1000

MCL in CCR units: 50

MCLG: 50

Major sources in drinking water: Discharge from petroleum and metal refineries; erosion of

natural deposits; discharge from mines.

Health effects language: Selenium is an essential nutrient. However, some people who drink

water containing selenium in excess of the MCL over many years could experience hair

or fingernail losses, numbness in fingers or toes, or problems with their circulation.

Contaminant (units): Thallium (ppb)

141

Traditional MCL in mg/L: 0.002

To convert for CCR, multiply by: 1000

MCL in CCR units: 2

MCLG: 0.5

Major sources in drinking water: Leaching from ore-processing sites; discharge from

electronics, glass, and drug factories.

Health effects language: Some people who drink water containing thallium in excess of the

MCL over many years could experience hair loss, changes in their blood, or problems

with their kidneys, intestines, or liver.

Synthetic organic contaminants including pesticides and herbicides:

Contaminant (units): 2,4-D (ppb)

Traditional MCL in mg/L: 0.07

To convert for CCR, multiply by: 1000

MCL in CCR units: 70

MCLG: 70

Major sources in drinking water: Runoff from herbicide used on row crops.

Health effects language: Some people who drink water containing the weed killer 2,4-D well in

excess of the MCL over many years could experience problems with their kidneys,

liver, or adrenal glands.

Contaminant (units): 2,4,5-TP [silvex](ppb)

Traditional MCL in mg/L: 0.05

To convert for CCR, multiply by: 1000

MCL in CCR units: 50

MCLG: 50

Major sources in drinking water: Residue of banned herbicide.

Health effects language: Some people who drink water containing silvex in excess of the MCL

over many years could experience liver problems.

Contaminant (units): Acrylamide

Traditional MCL in mg/L: TT

To convert for CCR, multiply by: --

MCL in CCR units: TT

MCLG: 0

Major sources in drinking water: Added to water during sewage/wastewater treatment.

Health effects language: Some people who drink water containing high levels of acrylamide

over a long period of time could have problems with their nervous system or blood, and

may have an increased risk of getting cancer.

Contaminant (units): Alachlor (ppb)

Traditional MCL in mg/L: 0.002

142

To convert for CCR, multiply by: 1000

MCL in CCR units: 2

MCLG: 0

Major sources in drinking water: Runoff from herbicide used on row crops.

Health effects language: Some people who drink water containing alachlor in excess of the

MCL over many years could have problems with their eyes, liver, kidneys, or spleen, or

experience anemia, and may have an increased risk of getting cancer.

Contaminant (units): Atrazine (ppb)

Traditional MCL in mg/L: 0.003

To convert for CCR, multiply by: 1000

MCL in CCR units: 3

MCLG: 3

Major sources in drinking water: Runoff from herbicide used on row crops.

Health effects language: Some people who drink water containing atrazine well in excess of the

MCL over many years could experience problems with their cardiovascular system or

reproductive difficulties.

Contaminant (units): Benzo(a)pyrene [PAH] (nanograms/L)

Traditional MCL in mg/L: 0.0002

To convert for CCR, multiply by: 1,000,000

MCL in CCR units: 200

MCLG: 0

Major sources in drinking water: Leaching from linings of water storage tanks and distribution

lines.

Health effects language: Some people who drink water containing benzo(a)pyrene in excess of

the MCL over many years may experience reproductive difficulties and may have an

increased risk of getting cancer.

Contaminant (units): Carbofuran (ppb)

Traditional MCL in mg/L: 0.04

To convert for CCR, multiply by: 1000

MCL in CCR units: 40

MCLG: 40

Major sources in drinking water: Leaching of soil fumigant used on rice and alfalfa.

Health effects language: Some people who drink water containing carbofuran in excess of the

MCL over many years could experience problems with their blood, or nervous or

reproductive systems.

Contaminant (units): Chlordane (ppb)

Traditional MCL in mg/L: 0.002

To convert for CCR, multiply by: 1000

MCL in CCR units: 2

143

MCLG: 0

Major sources in drinking water: Residue of banned termiticide.

Health effects language: Some people who drink water containing chlordane in excess of the

MCL over many years could experience problems with their liver or nervous system,

and may have an increased risk of getting cancer.

Contaminant (units): Dalapon (ppb)

Traditional MCL in mg/L: 0.2

To convert for CCR, multiply by: 1000

MCL in CCR units: 200

MCLG: 200

Major sources in drinking water: Runoff from herbicide used on rights of way.

Health effects language: Some people who drink water containing dalapon well in excess of the

MCL over many years could experience minor kidney changes.

Contaminant (units): Di(2-ethylhexyl)adipate (ppb)

Traditional MCL in mg/L: 0.4

To convert for CCR, multiply by: 1000

MCL in CCR units: 400

MCLG: 400

Major sources in drinking water: Discharge from chemical factories.

Health effects language: Some people who drink water containing di(2-ethylhexyl)adipate well

in excess of the MCL over many years could experience general toxic effects or

reproductive difficulties.

Contaminant (units): Di(2-ethylhexyl)phthalate (ppb)

Traditional MCL in mg/L: 0.006

To convert for CCR, multiply by: 1000

MCL in CCR units: 6

MCLG: 0

Major sources in drinking water: Discharge from rubber and chemical factories

Health effects language: Some people who drink water containing di(2-ethylhexyl)phthalate in

excess of the MCL over many years may have problems with their liver, or experience

reproductive difficulties, and may have an increased risk of getting cancer.

Contaminant (units): Dibromochloropropane [DBCP] (ppt)

Traditional MCL in mg/L: 0.0002

To convert for CCR, multiply by: 1,000,000

MCL in CCR units: 200

MCLG: 0

Major sources in drinking water: Runoff/leaching from soil fumigant used on soybeans, cotton,

pineapples, and orchards.

144

Health effects language: Some people who drink water containing DBCP in excess of the MCL

over many years could experience reproductive problems and may have an increased

risk of getting cancer.

Contaminant (units): Dinoseb (ppb)

Traditional MCL in mg/L: 0.007

To convert for CCR, multiply by: 1000

MCL in CCR units: 7

MCLG: 7

Major sources in drinking water: Runoff from herbicide used on soybeans and vegetables.

Health effects language: Some people who drink water containing dinoseb well in excess of the

MCL over many years could experience reproductive difficulties.

Contaminant (units): Diquat (ppb)

Traditional MCL in mg/L: 0.02

To convert for CCR, multiply by: 1000

MCL in CCR units: 20

MCLG: 20

Major sources in drinking water: Runoff from herbicide use.

Health effects language: Some people who drink water containing diquat in excess of the MCL

over many years could get cataracts.

Contaminant (units): Dioxin [2,3,7,8-TCDD] (ppq)

Traditional MCL in mg/L: 0.00000003

To convert for CCR, multiply by: 1,000,000,000

MCL in CCR units: 30

MCLG: 0

Major sources in drinking water: Emissions from waste incineration and other combustion;

discharge from chemical factories.

Health effects language: Some people who drink water containing dioxin in excess of the MCL

over many years could experience reproductive difficulties and may have an increased

risk of getting cancer.

Contaminant (units): Endothall (ppb)

Traditional MCL in mg/L: 0.1

To convert for CCR, multiply by: 1000

MCL in CCR units: 100

MCLG: 100

Major sources in drinking water: Runoff from herbicide use.

Health effects language: Some people who drink water containing endothall in excess of the

MCL over many years could experience problems with their stomach or intestines.

Contaminant (units): Endrin (ppb)

145

Traditional MCL in mg/L: 0.002

To convert for CCR, multiply by: 1000

MCL in CCR units: 2

MCLG: 2

Major sources in drinking water: Residue of banned insecticide.

Health effects language: Some people who drink water containing endrin in excess of the MCL

over many years could experience liver problems.

Contaminant (units): Epichlorohydrin.

Traditional MCL in mg/L: TT

To convert for CCR, multiply by: --

MCL in CCR units: TT

MCLG: 0

Major sources in drinking water: Discharge from industrial chemical factories; an impurity of

some water treatment chemicals.

Health effects language: Some people who drink water containing high levels of epichlorohydrin

over a long period of time could experience stomach problems, and may have an

increased risk of getting cancer.

Contaminant (units): Ethylene dibromide (ppt)

Traditional MCL in mg/L: 0.00005

To convert for CCR, multiply by: 1,000,000

MCL in CCR units: 50

MCLG: 0

Major sources in drinking water: Discharge from petroleum refineries.

Health effects language: Some people who drink water containing ethylene dibromide in excess

of the MCL over many years could experience problems with their liver, stomach,

reproductive system, or kidneys, and may have an increased risk of getting cancer.

Contaminant (units): Glyphosate (ppb)

Traditional MCL in mg/L: 0.7

To convert for CCR, multiply by: 1000

MCL in CCR units: 700

MCLG: 700

Major sources in drinking water: Runoff from herbicide use.

Health effects language: Some people who drink water containing glyphosate in excess of the

MCL over many years could experience problems with their kidneys or reproductive

difficulties.

Contaminant (units): Heptachlor (ppt)

Traditional MCL in mg/L: 0.0004

To convert for CCR, multiply by: 1,000,000

MCL in CCR units: 400

146

MCLG: 0

Major sources in drinking water: Residue of banned pesticide.

Health effects language: Some people who drink water containing heptachlor in excess of the

MCL over many years could experience liver damage and may have an increased risk

of getting cancer.

Contaminant (units): Heptachlor epoxide (ppt)

Traditional MCL in mg/L: 0.0002

To convert for CCR, multiply by: 1,000,000

MCL in CCR units: 200

MCLG: 0

Major sources in drinking water: Breakdown of heptachlor.

Health effects language: Some people who drink water containing heptachlor epoxide in excess

of the MCL over many years could experience liver damage, and may have an

increased risk of getting cancer.

Contaminant (units): Hexachlorobenzene (ppb)

Traditional MCL in mg/L: 0.001

To convert for CCR, multiply by: 1000

MCL in CCR units: 1

MCLG: 0

Major sources in drinking water: Discharge from metal refineries and agricultural chemical

factories.

Health effects language: Some people who drink water containing hexachlorobenzene in excess

of the MCL over many years could experience problems with their liver or kidneys, or

adverse reproductive effects, and may have an increased risk of getting cancer.

Contaminant (units): Hexachlorocyclopentadiene (ppb)

Traditional MCL in mg/L: 0.05

To convert for CCR, multiply by: 1000

MCL in CCR units: 50

MCLG: 50

Major sources in drinking water: Discharge from chemical factories.

Health effects language: Some people who drink water containing hexachlorocyclopentadiene

well in excess of the MCL over many years could experience problems with their

kidneys or stomach.

Contaminant (units): Lindane (ppt)

Traditional MCL in mg/L: 0.0002

To convert for CCR, multiply by: 1,000,000

MCL in CCR units: 200

MCLG: 200

147

Major sources in drinking water: Runoff/leaching from insecticide used on cattle, lumber,

gardens.

Health effects language: Some people who drink water containing lindane in excess of the MCL

over many years could experience problems with their kidneys or liver.

Contaminant (units): Methoxychlor (ppb)

Traditional MCL in mg/L: 0.04

To convert for CCR, multiply by: 1000

MCL in CCR units: 40

MCLG: 40

Major sources in drinking water: Runoff/leaching from insecticide used on fruits, vegetables,

alfalfa, livestock.

Health effects language: Some people who drink water containing methoxychlor in excess of

the MCL over many years could experience reproductive difficulties.

Contaminant (units): Oxamyl [Vydate] (ppb)

Traditional MCL in mg/L: 0.2

To convert for CCR, multiply by: 1000

MCL in CCR units: 200

MCLG: 200

Major sources in drinking water: Runoff/leaching from insecticide used on apples, potatoes and

tomatoes.

Health effects language: Some people who drink water containing oxamyl in excess of the

MCL over many years could experience slight nervous system effects.

Contaminant (units): PCBs [Polychlorinated biphenyls] (ppt)

Traditional MCL in mg/L: 0.0005

To convert for CCR, multiply by: 1,000,000

MCL in CCR units: 500

MCLG: 0

Major sources in drinking water: Runoff from landfills; discharge of waste chemicals.

Health effects language: Some people who drink water containing PCBs in excess of the MCL

over many years could experience changes in their skin, problems with their thymus

gland, immune deficiencies, or reproductive or nervous system difficulties, and may have

an increased risk of getting cancer.

Contaminant (units): Pentachlorophenol (ppb)

Traditional MCL in mg/L: 0.001

To convert for CCR, multiply by: 1000

MCL in CCR units: 1

MCLG: 0

Major sources in drinking water: Discharge from wood preserving factories.

148

Health effects language: Some people who drink water containing pentachlorophenol in excess

of the MCL over many years could experience problems with their liver or kidneys, and

may have an increased risk of getting cancer.

Contaminant (units): Picloram (ppb)

Traditional MCL in mg/L: 0.5

To convert for CCR, multiply by: 1000

MCL in CCR units: 500

MCLG: 500

Major sources in drinking water: Herbicide runoff.

Health effects language: Some people who drink water containing picloram in excess of the

MCL over many years could experience problems with their liver.

Contaminant (units): Simazine (ppb)

Traditional MCL in mg/L: 0.004

To convert for CCR, multiply by: 1000

MCL in CCR units: 4

MCLG: 4

Major sources in drinking water: Herbicide runoff.

Health effects language: Some people who drink water containing simazine in excess of the

MCL over many years could experience problems with their blood.

Contaminant (units): Toxaphene (ppb)

Traditional MCL in mg/L: 0.003

To convert for CCR, multiply by: 1000

MCL in CCR units: 3

MCLG: 0

Major sources in drinking water: Runoff/leaching from insecticide used on cotton and cattle.

Health effects language: Some people who drink water containing toxaphene in excess of the

MCL over many years could have problems with their kidneys, liver, or thyroid, and

may have an increased risk of getting cancer.

Volatile organic contaminants:

Contaminant (units): Benzene (ppb)

Traditional MCL in mg/L: 0.005

To convert for CCR, multiply by: 1000

MCL in CCR units: 5

MCLG: 0

Major sources in drinking water: Discharge from factories; leaching from gas storage tanks and

landfills.

149

Health effects language: Some people who drink water containing benzene in excess of the

MCL over many years could experience anemia or a decrease in blood platelets, and

may have an increased risk of getting cancer.

Contaminant (units): Bromate (ppb)

Traditional MCL in mg/L: 0.010

To convert for CCR, multiply by: 1000

MCL in CCR units: 10

MCLG: 0

Major sources in drinking water: Byproduct of drinking water chlorination.

Health effects language: Some people who drink water containing bromate in excess of the

MCL over many years may have an increased risk of getting cancer.

Contaminant (units): Carbon tetrachloride (ppb)

Traditional MCL in mg/L: 0.005

To convert for CCR, multiply by: 1000

MCL in CCR units: 5

MCLG: 0

Major sources in drinking water: Discharge from chemical plants and other industrial activities.

Health effects language: Some people who drink water containing carbon tetrachloride in

excess of the MCL over many years could experience problems with their liver and may

have an increased risk of getting cancer.

Contaminant (units): Chloramines (ppm)

Traditional MCL in mg/L: MRDL = 4

To convert for CCR, multiply by: --

MCL in CCR units: MRDL = 4

MCLG: MRDLG = 4

Major sources in drinking water: Water additive used to control microbes.

Health effects language: Some people who use water containing chloramines well in excess of

the MRDL could experience irritating effects to their eyes and nose. Some people who

drink water containing chloramines well in excess of the MRDL could experience

stomach discomfort or anemia.

Contaminant (units): Chlorine (ppm)

Traditional MCL in mg/L: MRDL = 4

To convert for CCR, multiply by: --

MCL in CCR units: MRDL = 4

MCLG: MRDLG = 4

Major sources in drinking water: Water additive used to control microbes.

Health effects language: Some people who use water containing chlorine well in excess of the

MRDL could experience irritating effects to their eyes and nose. Some people who

150

drink water containing chlorine well in excess of the MRDL could experience stomach

discomfort.

Contaminant (units): Chlorite (ppm)

Traditional MCL in mg/L: 1

To convert for CCR, multiply by: --

MCL in CCR units: 1

MCLG: 0.8

Major sources in drinking water: Byproduct of drinking water chlorination.

Health effects language: Some infants and young children who drink water containing chlorite in

excess of the MCL could experience nervous system effects. Similar effects may occur

in fetuses of pregnant women who drink water containing chlorite in excess of the MCL.

Some people may experience anemia.

Contaminant (units): Chlorine dioxide (ppb)

Traditional MCL in mg/L: MRDL = 0.8

To convert for CCR, multiply by: 1000

MCL in CCR units: MRDL = 800

MCLG: MRDLG = 800

Major sources in drinking water: Water additive used to control microbes.

Health effects language: Some infants and young children who drink water containing chlorine

dioxide in excess of the MRDL could experience nervous system effects. Similar

effects may occur in fetuses of pregnant women who drink water containing chlorine

dioxide in excess of the MRDL. Some people may experience anemia.

Contaminant (units): Chlorobenzene (ppb)

Traditional MCL in mg/L: 0.1

To convert for CCR, multiply by: 1000

MCL in CCR units: 100

MCLG: 100

Major sources in drinking water: Discharge from chemical and agricultural chemical factories.

Health effects language: Some people who drink water containing chlorobenzene in excess of

the MCL over many years could experience problems with their liver or kidneys.

Contaminant (units): o-Dichlorobenzene (ppb)

Traditional MCL in mg/L: 0.6

To convert for CCR, multiply by: 1000

MCL in CCR units: 600

MCLG: 600

Major sources in drinking water: Discharge from industrial chemical factories.

Health effects language: Some people who drink water containing o-dichlorobenzene well in

excess of the MCL over many years could experience problems with their liver,

kidneys, or circulatory systems.

151

Contaminant (units): p-Dichlorobenzene (ppb)

Traditional MCL in mg/L: 0.075

To convert for CCR, multiply by: 1000

MCL in CCR units: 75

MCLG: 75

Major sources in drinking water: Discharge from industrial chemical factories.

Health effects language: Some people who drink water containing p-dichlorobenzene in excess

of the MCL over many years could experience anemia, damage to their liver, kidneys,

or spleen, or changes in their blood.

Contaminant (units): 1,2-Dichloroethane (ppb)

Traditional MCL in mg/L: 0.005

To convert for CCR, multiply by: 1000

MCL in CCR units: 5

MCLG: 0

Major sources in drinking water: Discharge from industrial chemical factories.

Health effects language: Some people who drink water containing 1,2-dichloroethane in excess

of the MCL over many years may have an increased risk of getting cancer.

Contaminant (units): 1,1-Dichloroethylene (ppb)

Traditional MCL in mg/L: 0.007

To convert for CCR, multiply by: 1000

MCL in CCR units: 7

MCLG: 7

Major sources in drinking water: Discharge from industrial chemical factories.

Health effects language: Some people who drink water containing 1,1-dichloroethylene in

excess of the MCL over many years could experience problems with their liver.

Contaminant (units): cis-1,2-Dichloroethylene (ppb)

Traditional MCL in mg/L: 0.07

To convert for CCR, multiply by: 1000

MCL in CCR units: 70

MCLG: 70

Major sources in drinking water: Discharge from industrial chemical factories.

Health effects language: Some people who drink water containing cis-1,2-dichloroethylene in

excess of the MCL over many years could experience problems with their liver.

Contaminant (units): trans-1,2-Dichloroethylene (ppb)

Traditional MCL in mg/L: 0.1

To convert for CCR, multiply by: 1000

MCL in CCR units: 100

MCLG: 100

152

Major sources in drinking water: Discharge from industrial chemical factories.

Health effects language: Some people who drink water containing trans-1,2-dichloroethylene

well in excess of the MCL over many years could experience problems with their liver.

Contaminant (units): Dichloromethane (ppb)

Traditional MCL in mg/L: 0.005

To convert for CCR, multiply by: 1000

MCL in CCR units: 5

MCLG: 0

Major sources in drinking water: Discharge from pharmaceutical and chemical factories.

Health effects language: Some people who drink water containing dichloromethane in excess of

the MCL over many years could have liver problems and may have an increased risk of

getting cancer.

Contaminant (units): 1,2-Dichloropropane (ppb)

Traditional MCL in mg/L: 0.005

To convert for CCR, multiply by: 1000

MCL in CCR units: 5

MCLG: 0

Major sources in drinking water: Discharge from industrial chemical factories.

Health effects language: Some people who drink water containing 1,2-dichloropropane in

excess of the MCL over many years may have an increased risk of getting cancer.

Contaminant (units): Ethylbenzene (ppb)

Traditional MCL in mg/L: 0.7

To convert for CCR, multiply by: 1000

MCL in CCR units: 700

MCLG: 700

Major sources in drinking water: Discharge from petroleum refineries.

Health effects language: Some people who drink water containing ethylbenzene well in excess

of the MCL over many years could experience problems with their liver or kidneys.

Contaminant (units): Haloacetic Acids (HAA5) (ppb)

Traditional MCL in mg/L: 0.060

To convert for CCR, multiply by: 1000

MCL in CCR units: 60

MCLG: N/A

Major sources in drinking water: Byproduct of drinking water disinfection.

Health effects language: Some people who drink water containing haloacetic acids in excess of

the MCL over many years may have an increased risk of getting cancer.

Contaminant (units): Styrene (ppb)

Traditional MCL in mg/L: 0.1

153

To convert for CCR, multiply by: 1000

MCL in CCR units: 100

MCLG: 100

Major sources in drinking water: Discharge from rubber and plastic factories; leaching from

landfills.

Health effects language: Some people who drink water containing styrene well in excess of the

MCL over many years could have problems with their liver, kidneys, or circulatory

system.

Contaminant (units): Tetrachloroethylene (ppb)

Traditional MCL in mg/L: 0.005

To convert for CCR, multiply by: 1000

MCL in CCR units: 5

MCLG: 0

Major sources in drinking water: Discharge from factories and dry cleaners.

Health effects language: Some people who drink water containing tetrachloroethylene in excess

of the MCL over many years could have problems with their liver, and may have an

increased risk of getting cancer.

Contaminant (units): 1,2,4-Trichlorobenzene (ppb)

Traditional MCL in mg/L: 0.07

To convert for CCR, multiply by: 1000

MCL in CCR units: 70

MCLG: 70

Major sources in drinking water: Discharge from textile-finishing factories.

Health effects language: Some people who drink water containing 1,2,4-trichlorobenzene well

in excess of the MCL over many years could experience changes in their adrenal

glands.

Contaminant (units): 1,1,1-Trichloroethane (ppb)

Traditional MCL in mg/L: 0.2

To convert for CCR, multiply by: 1000

MCL in CCR units: 200

MCLG: 200

Major sources in drinking water: Discharge from metal degreasing sites and other factories.

Health effects language: Some people who drink water containing 1,1,1-trichloroethane in

excess of the MCL over many years could experience problems with their liver, nervous

system, or circulatory system.

Contaminant (units): 1,1,2-Trichloroethane (ppb)

Traditional MCL in mg/L: 0.005

To convert for CCR, multiply by: 1000

MCL in CCR units: 5

154

MCLG: 3

Major sources in drinking water: Discharge from industrial chemical factories.

Health effects language: Some people who drink water containing 1,1,2-trichloroethane well in

excess of the MCL over many years could have problems with their liver, kidneys, or

immune systems.

Contaminant (units): Trichloroethylene (ppb)

Traditional MCL in mg/L: 0.005

To convert for CCR, multiply by: 1000

MCL in CCR units: 5

MCLG: 0

Major sources in drinking water: Discharge from metal degreasing sites and other factories.

Health effects language: Some people who drink water containing trichloroethylene in excess of

the MCL over many years could experience problems with their liver and may have an

increased risk of getting cancer.

Contaminant (units): TTHMs [Total trihalomethanes] (ppb)

Traditional MCL in mg/L: 0.10/0.080

To convert for CCR, multiply by: 1000

MCL in CCR units: 100/80

MCLG: N/A

Major sources in drinking water: Byproduct of drinking water chlorination.

Health effects language: Some people who drink water containing trihalomethanes in excess of

the MCL over many years may experience problems with their liver, kidneys, or central

nervous systems, and may have an increased risk of getting cancer.

Contaminant (units): Toluene (ppm)

Traditional MCL in mg/L: 1

To convert for CCR, multiply by: --

MCL in CCR units: 1

MCLG: 1

Major sources in drinking water: Discharge from petroleum factories.

Health effects language: Some people who drink water containing toluene well in excess of the

MCL over many years could have problems with their nervous system, kidneys, or

liver.

Contaminant (units): Vinyl Chloride (ppb)

Traditional MCL in mg/L: 0.002

To convert for CCR, multiply by: 1000

MCL in CCR units: 2

MCLG: 0

Major sources in drinking water: Leaching from PVC piping; discharge from plastics factories.

155

Health effects language: Some people who drink water containing vinyl chloride in excess of the

MCL over many years may have an increased risk of getting cancer.

Contaminant (units): Xylenes (ppm)

Traditional MCL in mg/L: 10

To convert for CCR, multiply by: --

MCL in CCR units: 10

MCLG: 10

Major sources in drinking water: Discharge from petroleum factories; discharge from chemical

factories.

Health effects language: Some people who drink water containing xylenes in excess of the

MCL over many years could experience damage to their nervous system.

Key:

Abbreviation

Meaning

Action Level

MCL

Maximum Contaminant Level

MCLG

Maximum Contaminant Level Goal

MFL

million fibers per liter

MRDL

Maximum Residual Disinfectant Level

MRDLG

Maximum Residual Disinfectant Level Goal

mrem/year

millirems per year (a measure of radiation absorbed by the body)

N/A

Not Applicable

NTU

Nephelometric Turbidity Units (a measure of water clarity)

pCi/L

picocuries per liter (a measure of radioactivity)

ppm

parts per million, or milligrams per liter (mg/L)

ppb

parts per billion, or micrograms per liter (

g/L)

ppt

parts per trillion, or nanograms per liter

ppq

parts per quadrillion, or picograms per liter

Treatment Technique

BOARD NOTE: Derived from Appendix A to Subpart O to 40 CFR 141 (1999) (2000), as added at

65 Fed. Reg. 26024 (May 4, 1999) 76749 (December 7, 2000), effective December 8, 2003.

(Source: Amended at 25 Ill. Reg. ________ effective ______________________)

Section 611.Appendix G

NPDWR Violations and Situations Requiring Public Notice

See note 1 at the end of this Appendix for an explanation of the Agency’s authority to alter the

magnitude of a violation from that set forth in the following table.

156

MCL/MRDL/TT violations

Monitoring & testing

procedure violations

Contaminant

Tier of

public

notice

required

Citation

Tier of

public

notice

required

Citation

I. Violations of National Primary Drinking Water Regulations (NPDWR):

A. Microbiological Contaminants

1. Total coliform

611.325(a)

611.521-

611.525

2. Fecal coliform/E. coli

611.325(b)

1, 3

611.525

3. Turbidity MCL

611.320(a)

611.560

4. Turbidity MCL (average of 2

two days’ samples >5 NTU)

2, 1

611.320(b)

611.560

5. Turbidity (for TT violations

resulting from a single exceedance

exceedence of maximum allowable

turbidity level)

2, 1

611.231(b),

611.233(b)(1),

611.250(a)(2),

611.250(b)(2),

611.250(c)(2),

611.250(d),

611.743(a)(2),

611.743(b)

611.531(a),

611.532(b),

611.533(a),

611.744

6. Surface Water Treatment Rule

violations, other than violations

resulting from single exceedance

exceedence of max. allowable

turbidity level (TT)

611.211,

611.213,

611.220,

611.230-

611.233,

611.240-

611.242,

611.250

611.531-

611.533

7. Interim Enhanced Surface

Water Treatment Rule violations,

other than violations resulting from

single exceedance exceedence of

max. turbidity level (TT)

611.740-

611.743

611.742,

611.744

B. Inorganic Chemicals (IOCs)

1. Antimony

611.301(b)

611.600,

611.601,

611.603

157

2. Arsenic

611.300(b),

611.612(c)

611.100,

611.101,

611.612

3. Asbestos (fibers >10 m)

611.301(b)

611.600,

611.601,

611.602

4. Barium

611.301(b)

611.600,

611.601,

611.603

5. Beryllium

611.301(b)

611.600,

611.601,

611.603

6. Cadmium

611.301(b)

611.600,

611.601,

611.603

7. Chromium (total)

611.301(b)

611.600,

611.601,

611.603

8. Cyanide

611.301(b)

611.600,

611.601,

611.603

9. Fluoride

611.301(b)

611.600,

611.601,

611.603

10. Mercury (inorganic)

611.301(b)

611.600,

611.601,

611.603

11. Nitrate

611.301(b)

1, 3

611.600,

611.601,

611.604,

611.606

12. Nitrite

611.301(b)

1, 3

611.600,

611.601,

611.605,

611.606

13. Total Nitrate and Nitrite

611.301(b)

611.600,

611.601

14. Selenium

611.301(b)

611.600,

611.601,

611.603

158

15. Thallium

611.301(b)

611.600,

611.601,

611.603

C. Lead and Copper Rule (Action Level for lead is 0.015 mg/L, for copper is 1.3 mg/L)

1. Lead and Copper Rule (TT)

611.350-

611.355

611.356-

611.359

D. Synthetic Organic Chemicals (SOCs)

1. 2,4-D

611.310(c)

611.648

2. 2,4,5-TP (silvex)

611.310(c)

611.648

3. Alachlor

611.310(c)

611.648

4. Atrazine

611.310(c)

611.648

5. Benzo(a)pyrene (PAHs)

611.310(c)

611.648

6. Carbofuran

611.310(c)

611.648

7. Chlordane

611.310(c)

611.648

8. Dalapon

611.310(c)

611.648

9. Di (2-ethylhexyl) adipate

611.310(c)

611.648

10. Di (2-ethylhexyl) phthalate

611.310(c)

611.648

11. Dibromochloropropane

(DBCP)

611.310(c)

611.648

12. Dinoseb

611.310(c)

611.648

13. Dioxin (2,3,7,8-TCDD)

611.310(c)

611.648

14. Diquat

611.310(c)

611.648

15. Endothall

611.310(c)

611.648

16. Endrin

611.310(c)

611.648

17. Ethylene dibromide

611.310(c)

611.648

18. Glyphosate

611.310(c)

611.648

19. Heptachlor

611.310(c)

611.648

20. Heptachlor epoxide

611.310(c)

611.648

21. Hexachlorobenzene

611.310(c)

611.648

22. Hexachlorocyclo-pentadiene

611.310(c)

611.648

23. Lindane

611.310(c)

611.648

24. Methoxychlor

611.310(c)

611.648

25. Oxamyl (Vydate)

611.310(c)

611.648

26. Pentachlorophenol

611.310(c)

611.648

27. Picloram

611.310(c)

611.648

28. Polychlorinated biphenyls

(PCBs)

611.310(c)

611.648

29. Simazine

611.310(c)

611.648

30. Toxaphene

611.310(c)

611.648

159

E. Volatile Organic Chemicals (VOCs)

1. Benzene

611.310(a)

611.646

2. Carbon tetrachloride

611.310(a)

611.646

3. Chlorobenzene

(monochlorobenzene)

611.310(a)

611.646

4. o-Dichlorobenzene

611.310(a)

611.646

5. p-Dichlorobenzene

611.310(a)

611.646

6. 1,2-Dichloroethane

611.310(a)

611.646

7. 1,1-Dichloroethylene

611.310(a)

611.646

8. cis-1,2-Dichloroethylene

611.310(a)

611.646

9. trans-1,2-Dichloroethylene

611.310(a)

611.646

10. Dichloromethane

611.310(a)

611.646

11. 1,2-Dichloropropane

611.310(a)

611.646

12. Ethylbenzene

611.310(a)

611.646

13. Styrene

611.310(a)

611.646

14. Tetrachloroethylene

611.310(a)

611.646

15. Toluene

611.310(a)

611.646

16. 1,2,4-Trichlorobenzene

611.310(a)

611.646

17. 1,1,1-Trichloroethane

611.310(a)

611.646

18. 1,1,2-Trichloroethane

611.310(a)

611.646

19. Trichloroethylene

611.310(a)

611.646

20. Vinyl chloride

611.310(a)

611.646

21. Xylenes (total)

611.310(a)

611.646

F. Radioactive Contaminants

1. Beta/photon emitters

611.331

611.330(d)

611.720(a),

611.732

2. Alpha emitters

611.330(b)

611.330(c)

611.720(a),

611.731

3. Combined radium (226 & 228)

611.330(a)

611.330(b)

611.720(a),

611.731

4. Uranium

611.330(e)

611.720(a),

611.731

160

G. Disinfection Byproducts (DBPs), Byproduct Precursors, Disinfectant Residuals. Where disinfection

is used in the treatment of drinking water, disinfectants combine with organic and inorganic matter

present in water to form chemicals called disinfection byproducts (DBPs). EPA sets standards for

controlling the levels of disinfectants and DBPs in drinking water, including trihalomethanes (THMs) and

haloacetic acids (HAAs).

1. Total trihalomethanes (TTHMs)

611.310,

611.312(a)

611.680-

611.688,

611.382(a)-(b)

2. Haloacetic Acids (HAA5)

611.312(a)

611.382(a)-(b)

3. Bromate

611.312(a)

611.382(a)-(b)

4. Chlorite

611.312(a)

611.382(a)-(b)

5. Chlorine (MRDL)

611.313(a)

611.382(a), (c)

6. Chloramine (MRDL)

611.313(a)

611.382(a), (c)

7. Chlorine dioxide (MRDL),

where any 2 two consecutive daily

samples at entrance to distribution

system only are above MRDL

611.313(a),

611.383(c)(3)

, 3

611.382(a), (c),

611.383(c)(2)

8. Chlorine dioxide (MRDL),

where sample(s) in distribution

system the next day are also above

MRDL

611.313(a),

611.383(c)(3)

611.382(a), (c),

611.383(c)(2)

9. Control of DBP precursors--

TOC (TT)

611.385(a)-(b)

611.382(a), (d)

10. Benchmarking and disinfection

profiling

N/A

611.742

11. Development of monitoring

plan

N/A

611.382(f)

H. Other Treatment Techniques

1. Acrylamide (TT)

611.296

N/A

2. Epichlorohydrin (TT)

611.296

N/A

II. Unregulated Contaminant Monitoring:

A. Unregulated contaminants

N/A

611.510

B. Nickel

N/A

611.603,

611.611

161

III. Public Notification for Relief Equivalent to a SDWA Section 1415 Variance or a Section 1416

Exemption:

A. Operation under relief

equivalent to a SDWA Section

1415 variance or a Section 1416

exemption

1415, 1416

N/A

B. Violation of conditions of relief

equivalent to a SDWA Section

1415 variance or a Section 1416

exemption

1415, 1416,

611.111,

611.112

N/A

IV. Other Situations Requiring Public Notification:

A. Fluoride secondary maximum

contaminant level (SMCL)

exceedance exceedence

611.858

N/A

B. Exceedance Exceedence of

nitrate MCL for non-community

systems, as allowed by the Agency

611.300(d)

N/A

C. Availability of unregulated

contaminant monitoring data

611.510

N/A

D. Waterborne disease outbreak

611.101,

611.233(b)(2)

N/A

E. Other waterborne emergency

N/A

F. Other situations as determined

by the Agency by a SEP issued

pursuant to Section 611.110

1, 2, 3

N/A

Appendix G--Endnotes

1. Violations and other situations not listed in this table (e.g., reporting violations and failure to prepare

Consumer Confidence Reports), do not require notice, unless otherwise determined by the Agency by a

SEP issued pursuant to Section 611.110. The Agency may, by a SEP issued pursuant to Section

611.110, further require a more stringent public notice tier (e.g., Tier 1 instead of Tier 2 or Tier 2

instead of Tier 3) for specific violations and situations listed in this Appendix, as authorized under

Sections 611.902(a) and 611.903(a).

2. Definition of the abbreviations used: “MCL” means maximum contaminant level, “MRDL” means

maximum residual disinfectant level, and “TT” means treatment technique

3. The term “violations of National Primary Drinking Water Regulations (NPDWR)” is used here to

include violations of MCL, MRDL, treatment technique, monitoring, and testing procedure

requirements.

162

4. Failure to test for fecal coliform or E. coli is a Tier 1 violation if testing is not done after any repeat

sample tests positive for coliform. All other total coliform monitoring and testing procedure violations

are Tier 3 violations.

5. A supplier that violates the turbidity MCL of 5 NTU based on an average of measurements over two

consecutive days must consult with the Agency within 24 hours after learning of the violation. Based on

this consultation, the Agency may subsequently decide to issue a SEP issued pursuant to Section

611.110 that elevates the violation to a Tier 1 violation. If a system is unable to make contact with the

Agency in the 24-hour period, the violation is automatically elevated to a Tier 1 violation.

6. A supplier with a treatment technique violation involving a single exceedance exceedence of a

maximum turbidity limit under the Surface Water Treatment Rule (SWTR) or the Interim Enhanced

Surface Water Treatment Rule (IESWTR) are required to consult with the Agency within 24 hours after

learning of the violation. Based on this consultation, the Agency may subsequently decide to issue a

SEP pursuant to Section 611.110 that elevates the violation to a Tier 1 violation. If a system is unable

to make contact with the Agency in the 24-hour period, the violation is automatically elevated to a Tier

1 violation.

7. Most of the requirements of the Interim Enhanced Surface Water Treatment Rule (63 FR Fed. Reg.

69477 (December 16, 1998)) (Secs. Sections 611.740-611.741, 611.743-611.744) become effective

January 1, 2002 for a Subpart B supplier (surface water systems and groundwater systems under the

direct influence of surface water) that serves at least 10,000 persons. However, Section 611.742 is

currently effective. The Surface Water Treatment Rule (SWTR) remains in effect for systems serving at

least 10,000 persons even after 2002; the Interim Enhanced Surface Water Treatment Rule adds

additional requirements and does not in many cases supercede the SWTR.

8. Failure to take a confirmation sample within 24 hours for nitrate or nitrite after an initial sample

exceeds the MCL is a Tier 1 violation. Other monitoring violations for nitrate are Tier 3.

9. The uranium MCL Tier 2 violation citations are effective December 8, 2003 for all community water

systems.

10. The uranium Tier 3 violation citations are effective December 8, 2000 for all community water

systems.

9. 11. A Subpart B community or non-transient non-community system supplier that serves 10,000

persons or more must comply with new DBP MCLs, disinfectant MRDLs, and related monitoring

requirements beginning January 1, 2002. All other community and non-transient non-community

systems must meet the MCLs and MRDLs beginning January 1, 2004. A Subpart B transient non-

community system supplier serving 10,000 or more persons that uses chlorine dioxide as a disinfectant

or oxidant must comply with the chlorine dioxide MRDL beginning January 1, 2002. A Subpart B

transient non-community system supplier that serves fewer than 10,000 persons, which uses only

163

groundwater not under the direct influence of surface water, and which uses chlorine dioxide as a

disinfectant or oxidant must comply with the chlorine dioxide MRDL beginning January 1, 2004.

10. 12. Section 611.310 will no longer apply after January 1, 2004.

11. 13. Failure to monitor for chlorine dioxide at the entrance to the distribution system the day after

exceeding the MRDL at the entrance to the distribution system is a Tier 2 violation.

12. 14. If any daily sample taken at the entrance to the distribution system exceeds the MRDL for

chlorine dioxide and one or more samples taken in the distribution system the next day exceed the

MRDL, Tier 1 notification is required. A failure to take the required samples in the distribution system

after the MRDL is exceeded at the entry point also triggers Tier 1 notification.

13. 15. Some water suppliers must monitor for certain unregulated contaminants listed in Section

611.510.

14. 16. This citation refers to Sections 1415 and 1416 of the federal Safe Drinking Water Act. Sections

1415 and 1416 require that “a schedule prescribed . . . for a public water system granted relief

equivalent to a SDWA Section 1415 variance or a Section 1416 exemption shall must require

compliance by the system . . ..”

15. 17. In addition to Sections 1415 and 1416 of the federal Safe Drinking Water Act, 40 CFR

142.307 specifies the items and schedule milestones that must be included in relief equivalent to a

SDWA Section 1415 small system variance. In granting any form of relief from an NPDWR, the Board

will consider all applicable federal requirements for and limitations on the State’s ability to grant relief

consistent with federal law.

16. 18. Other waterborne emergencies require a Tier 1 public notice under Section 611.902(a) for

situations that do not meet the definition of a waterborne disease outbreak given in Section 611.101, but

which still have the potential to have serious adverse effects on health as a result of short-term exposure.

These could include outbreaks not related to treatment deficiencies, as well as situations that have the

potential to cause outbreaks, such as failures or significant interruption in water treatment processes,

natural disasters that disrupt the water supply or distribution system, chemical spills, or unexpected

loading of possible pathogens into the source water.

BOARD NOTE: Derived from Appendix A to Subpart Q to 40 CFR 141 (2000), as added amended

at 65 Fed. Reg. 26040 (May 4, 1999) 76750 (December 7, 2000), effective December 8, 2003.

(Source: Amended at 25 Ill. Reg. ________ effective ______________________)

164

Section 611.Appendix H

Standard Health Effects Language for Public Notification

Contaminant

MCLG

mg/L

MCL

mg/L

Standard health effects language for

public notification

National Primary Drinking Water Regulations (NPDWR):

A. Microbiological Contaminants

1a. Total coliform

Zero

See footnote

Coliforms are bacteria that are

naturally present in the environment

and are used as an indicator that

other, potentially-harmful, bacteria

may be present. Coliforms were

found in more samples than allowed

and this was a warning of potential

problems.

1b. Fecal coliform/E. coli

Zero

Fecal coliforms and E. coli are

bacteria whose presence indicates

that the water may be contaminated

with human or animal wastes.

Microbes in these wastes can cause

short-term effects, such as diarrhea,

cramps, nausea, headaches, or other

symptoms. They may pose a special

health risk for infants, young children,

some of the elderly, and people with

severely compromised immune

systems.

2a. Turbidity (MCL)

None

1 NTU

NTU

Turbidity has no health effects.

However, turbidity can interfere with

disinfection and provide a medium for

microbial growth. Turbidity may

indicate the presence of disease-

causing organisms. These organisms

include bacteria, viruses, and parasites

that can cause symptoms such as

nausea, cramps, diarrhea and

associated headaches.

165

2b. Turbidity (SWTR TT)

None

Turbidity has no health effects.

However,

turbidity can interfere with

disinfection and provide a medium for

microbial growth. Turbidity may

indicate the presence of disease-

causing organisms. These organisms

include bacteria, viruses, and parasites

that can cause symptoms such as

nausea, cramps, diarrhea and

associated headaches.

2c. Turbidity (IESWTR TT)

None

Turbidity has no health effects.

However,

turbidity can interfere with

disinfection and provide a medium for

microbial growth. Turbidity may

indicate the presence of disease-

causing organisms. These organisms

include bacteria, viruses, and parasites

that can cause symptoms such as

nausea, cramps, diarrhea and

associated headaches.

B. Surface Water Treatment Rule (SWTR) and Interim Enhanced Surface Water

Treatment Rule (IESWTR) violations

3. Giardia lamblia

(SWTR/IESWTR)

Zero

Inadequately treated water may

contain disease-causing organisms.

These organisms include bacteria,

viruses, and parasites which can cause

symptoms such as nausea, cramps,

diarrhea, and associated headaches.

4. Viruses (SWTR/IESWTR)

5. Heterotrophic plate count

(HPC) bacteria

(SWTR/IESWTR)

6. Legionella

(SWTR/IESWTR)

7. Cryptosporidium

(IESWTR)

166

C. Inorganic Chemicals (IOCs)

8. Antimony

0.006

Some people who drink water

containing antimony well in excess of

the MCL over many years could

experience increases in blood

cholesterol and decreases in blood

sugar.

9. Arsenic

None

0.05

Some people who drink water

containing arsenic in excess of the

MCL over many years could

experience skin damage or problems

with their circulatory system, and may

have an increased risk of getting

cancer.

10. Asbestos (10 μm)

7 MFL

7MFL

Some people who drink water

containing asbestos in excess of the

MCL over many years may have an

increased risk of developing benign

intestinal polyps.

11. Barium

Some people who drink water

containing barium in excess of the

MCL over many years could

experience an increase in their blood

pressure.

12. Beryllium

0.004

Some people who drink water

containing beryllium well in excess of

the MCL over many years could

develop intestinal lesions.

13. Cadmium

0.005

Some people who drink water

containing cadmium in excess of the

MCL over many years could

experience kidney damage.

14. Chromium (total)

0.1

Some people who use water

containing chromium well in excess of

the MCL over many years could

experience allergic dermatitis.

15. Cyanide

0.2

Some people who drink water

containing cyanide well in excess of

the MCL over many years could

experience nerve damage or problems

with their thyroid.

167

16. Fluoride

4.0

Some people who drink water

containing fluoride in excess of the

MCL over many years could get bone

disease, including pain and tenderness

of the bones. Fluoride in drinking

water at half the MCL or more may

cause mottling of children’s teeth,

usually in children less than nine years

old. Mottling, also known as dental

fluorosis, may include brown staining

and/or pitting of the teeth, and occurs

only in developing teeth before they

erupt from the gums.

17. Mercury (inorganic)

0.002

Some people who drink water

containing inorganic mercury well in

excess of the MCL over many years

could experience kidney damage.

18. Nitrate

Infants below the age of six months

who drink water containing nitrate in

excess of the MCL could become

seriously ill and, if untreated, may die.

Symptoms include shortness of breath

and blue baby syndrome.

19. Nitrite

Infants below the age of six months

who drink water containing nitrite in

excess of the MCL could become

seriously ill and, if untreated, may die.

Symptoms include shortness of breath

and blue baby syndrome.

20. Total Nitrate and Nitrite

Infants below the age of six months

who drink water containing nitrate and

nitrite in excess of the MCL could

become seriously ill and, if untreated,

may die. Symptoms include shortness

of breath and blue baby syndrome.

21. Selenium

0.05

Selenium is an essential nutrient.

However, some people who drink

water containing selenium in excess of

the MCL over many years could

experience hair or fingernail losses,

numbness in fingers or toes, or

problems with their circulation.

168

22. Thallium

0.0005

0.002

Some people who drink water

containing thallium in excess of the

MCL over many years could

experience hair loss, changes in their

blood, or problems with their kidneys,

intestines, or liver.

D. Lead and Copper Rule

23. Lead

Zero

Infants and children who drink water

containing lead in excess of the action

level could experience delays in their

physical or mental development.

Children could show slight deficits in

attention span and learning abilities.

Adults who drink this water over

many years could develop kidney

problems or high blood pressure.

24. Copper

1.3

Copper is an essential nutrient, but

some people who drink water

containing copper in excess of the

action level over a relatively short

amount of time could experience

gastrointestinal distress. Some people

who drink water containing copper in

excess of the action level over many

years could suffer liver or kidney

damage. People with Wilson’s

Disease should consult their personal

doctor.

E. Synthetic Organic Chemicals (SOCs)

25. 2,4-D

0.07

Some people who drink water

containing the weed killer 2,4-D well

in excess of the MCL over many

years could experience problems with

their kidneys, liver, or adrenal glands.

26. 2,4,5-TP (silvex)

0.05

Some people who drink water

containing silvex in excess of the

MCL over many years could

experience liver problems.

169

27. Alachlor

Zero

0.002

Some people who drink water

containing alachlor in excess of the

MCL over many years could have

problems with their eyes, liver,

kidneys, or spleen, or experience

anemia, and may have an increased

risk of getting cancer.

28. Atrazine

0.003

Some people who drink water

containing atrazine well in excess of

the MCL over many years could

experience problems with their

cardiovascular system or reproductive

difficulties.

29. Benzo(a)pyrene (PAHs).

Zero

0.0002

Some people who drink water

containing benzo(a)pyrene in excess

of the MCL over many years may

experience reproductive difficulties

and may have an increased risk of

getting cancer.

30. Carbofuran

0.04

Some people who drink water

containing carbofuran in excess of the

MCL over many years could

experience problems with their blood,

or nervous or reproductive systems.

31. Chlordane

Zero

0.002

Some people who drink water

containing chlordane in excess of the

MCL over many years could

experience problems with their liver or

nervous system, and may have an

increased risk of getting cancer.

32. Dalapon

0.2

Some people who drink water

containing dalapon well in excess of

the MCL over many years could

experience minor kidney changes.

33. Di (2-ethylhexyl)adipate

0.4

Some people who drink water

containing di(2-ethylhexyl) adipate

di(2-ethylhexyl)adipate well in excess

of the MCL over many years could

experience general toxic effects or

reproductive difficulties.

170

34. Di (2-ethylhexyl)phthalate

Zero

0.006

Some people who drink water

containing di(2-ethylhexyl) phthalate

di(2-ethylhexyl)phthalate in excess of

the MCL over many years may have

problems with their liver, or

experience reproductive difficulties,

and may have an increased risk of

getting cancer.

35. Dibromochloropropane

(DBCP)

Zero

0.0002

Some people who drink water

containing DBCP in excess of the

MCL over many years could

experience reproductive difficulties

and may have an increased risk of

getting cancer.

36. Dinoseb

0.007

Some people who drink water

containing dinoseb well in excess of

the MCL over many years could

experience reproductive difficulties.

37. Dioxin (2,3,7,8-TCDD)

Zero

3 x 10

-8

Some people who drink water

containing dioxin in excess of the

MCL over many years could

experience reproductive difficulties

and may have an increased risk of

getting cancer.

38. Diquat

0.02

Some people who drink water

containing diquat in excess of the

MCL over many years could get

cataracts.

39. Endothall

0.1

Some people who drink water

containing endothall in excess of the

MCL over many years could

experience problems with their

stomach or intestines.

40. Endrin

0.002

Some people who drink water

containing endrin in excess of the

MCL over many years could

experience liver problems.

171

41. Ethylene dibromide

Zero

0.00005

Some people who drink water

containing ethylene dibromide in

excess of the MCL over many years

could experience problems with their

liver, stomach, reproductive system,

or kidneys, and may have an

increased risk of getting cancer.

42. Glyphosate

0.7

Some people who drink water

containing glyphosate in excess of the

MCL over many years could

experience problems with their

kidneys or reproductive difficulties.

43. Heptachlor

Zero

0.0004

Some people who drink water

containing heptachlor in excess of the

MCL over many years could

experience liver damage and may

have an increased risk of getting

cancer.

44. Heptachlor epoxide

Zero

0.0002

Some people who drink water

containing heptachlor epoxide in

excess of the MCL over many years

could experience liver damage, and

may have an increased risk of getting

cancer.

45. Hexachlorobenzene

Zero

0.001

Some people who drink water

containing hexachlorobenzene in

excess of the MCL over many years

could experience problems with their

liver or kidneys, or adverse

reproductive effects, and may have an

increased risk of getting cancer.

46. Hexachlorocyclopenta-

diene

0.05

Some people who drink water

containing hexachlorocyclopentadiene

well in excess of the MCL over many

years could experience problems with

their kidneys or stomach.

47. Lindane

0.0002

Some people who drink water

containing lindane in excess of the

MCL over many years could

experience problems with their

kidneys or liver.

172

48. Methoxychlor

0.04

Some people who drink water

containing methoxychlor in excess of

the MCL over many years could

experience reproductive difficulties.

49. Oxamyl (Vydate)

0.2

Some people who drink water

containing oxamyl in excess of the

MCL over many years could

experience slight nervous system

effects.

50. Pentachlorophenol

Zero

0.001

Some people who drink water

containing pentachlorophenol in

excess of the MCL over many years

could experience problems with their

liver or kidneys, and may have an

increased risk of getting cancer.

51. Picloram

0.5

Some people who drink water

containing picloram in excess of the

MCL over many years could

experience problems with their liver.

52. Polychlorinated biphenyls

(PCBs)

Zero

0.0005

Some people who drink water

containing PCBs in excess of the

MCL over many years could

experience changes in their skin,

problems with their thymus gland,

immune deficiencies, or reproductive

or nervous system difficulties, and

may have an increased risk of getting

cancer.

53. Simazine

0.004

Some people who drink water

containing simazine in excess of the

MCL over many years could

experience problems with their blood.

54. Toxaphene

Zero

0.003

Some people who drink water

containing toxaphene in excess of the

MCL over many years could have

problems with their kidneys, liver, or

thyroid, and may have an increased

risk of getting cancer.

173

F. Volatile Organic Chemicals (VOCs)

55. Benzene

Zero

0.005

Some people who drink water

containing benzene in excess of the

MCL over many years could

experience anemia or a decrease in

blood platelets, and may have an

increased risk of getting cancer.

56. Carbon tetrachloride

Zero

0.005

Some people who drink water

containing carbon tetrachloride in

excess of the MCL over many years

could experience problems with their

liver and may have an increased risk

of getting cancer.

57. Chlorobenzene (mono-

chlorobenzene)

0.1

Some people who drink water

containing chlorobenzene in excess of

the MCL over many years could

experience problems with their liver or

kidneys.

58. o-Dichlorobenzene

0.6

Some people who drink water

containing o- dichlorobenzene well in

excess of the MCL over many years

could experience problems with their

liver, kidneys, or circulatory systems.

59. p-Dichlorobenzene

0.075

Some people who drink water

containing p- dichlorobenzene in

excess of the MCL over many years

could experience anemia, damage to

their liver, kidneys, or spleen, or

changes in their blood.

60. 1,2-Dichloroethane

Zero

0.005

Some people who drink water

containing 1,2-dichloroethane in

excess of the MCL over many years

may have an increased risk of getting

cancer.

61. 1,1-Dichloroethylene

0.007

Some people who drink water

containing 1,1-dichloroethylene in

excess of the MCL over many years

could experience problems with their

liver.

174

62. cis-1,2-Dichloroethylene

0.07

Some people who drink water

containing cis-1,2-dichloroethylene in

excess of the MCL over many years

could experience problems with their

liver.

63. trans-1,2-Dichloro-

ethylene

0.1

Some people who drink water

containing trans-1,2-dichloroethylene

well in excess of the MCL over many

years could experience problems with

their liver.

64. Dichloromethane

Zero

0.005

Some people who drink water

containing dichloromethane in excess

of the MCL over many years could

have liver problems and may have an

increased risk of getting cancer.

65. 1,2-Dichloropropane

Zero

0.005

Some people who drink water

containing 1,2-dichloropropane in

excess of the MCL over many years

may have an increased risk of getting

cancer.

66. Ethylbenzene

0.7

Some people who drink water

containing ethylbenzene well in excess

of the MCL over many years could

experience problems with their liver or

kidneys.

67. Styrene

0.1

Some people who drink water

containing styrene well in excess of

the MCL over many years could have

problems with their liver, kidneys, or

circulatory system.

68. Tetrachloroethylene

Zero

0.005

Some people who drink water

containing tetrachloroethylene in

excess of the MCL over many years

could have problems with their liver,

and may have an increased risk of

getting cancer.

69. Toluene

Some people who drink water

containing toluene well in excess of

the MCL over many years could have

problems with their nervous system,

kidneys, or liver.

175

70. 1,2,4-Trichlorobenzene

0.07

Some people who drink water

containing 1,2,4-trichlorobenzene well

in excess of the MCL over many

years could experience changes in

their adrenal glands.

71. 1,1,1-Trichloroethane

0.2

Some people who drink water

containing 1,1,1-trichloroethane in

excess of the MCL over many years

could experience problems with their

liver, nervous system, or circulatory

system.

72. 1,1,2-Trichloroethane

0.003

0.005

Some people who drink water

containing 1,1,2-trichloroethane well

in excess of the MCL over many

years could have problems with their

liver, kidneys, or immune systems.

73. Trichloroethylene

Zero

0.005

Some people who drink water

containing trichloroethylene in excess

of the MCL over many years could

experience problems with their liver

and may have an increased risk of

getting cancer.

74. Vinyl chloride

Zero

0.002

Some people who drink water

containing vinyl chloride in excess of

the MCL over many years may have

an increased risk of getting cancer.

75. Xylenes (total)

Some people who drink water

containing xylenes in excess of the

MCL over many years could

experience damage to their nervous

system.

G. Radioactive Contaminants

76. Beta/photon emitters

Zero

4 mrem/yr

Certain minerals are radioactive and

may emit forms of radiation known as

photons and beta radiation. Some

people who drink water containing

beta and photon emitters in excess of

the MCL over many years may have

an increased risk of getting cancer.

176

77. Alpha emitters

Zero

15 pCi/L

Certain minerals are radioactive and

may emit a form of radiation known

as alpha radiation. Some people who

drink water containing alpha emitters

in excess of the MCL over many

years may have an increased risk of

getting cancer.

78. Combined radium (226 &

228)

Zero

5 pCi/L

Some people who drink water

containing radium 226 or 228 in

excess of the MCL over many years

may have an increased risk of getting

cancer.

H. Disinfection Byproducts (DBPs), Byproduct Precursors, and Disinfectant Residuals:

Where disinfection is used in the treatment of drinking water, disinfectants combine with

organic and inorganic matter present in water to form chemicals called disinfection

byproducts (DBPs). USEPA sets standards for controlling the levels of disinfectants

and DBPs in drinking water, including trihalomethanes (THMs) and haloacetic acids

(HAA5)

79. Uranium

Zero

g/L

Some people who drink water

containing uranium in excess of the

MCL over many years may have an

increased risk of getting cancer and

kidney toxicity.

79. 80. Total trihalomethanes

(TTHMs)

N/A

0.10/0.080

Some people who drink water

containing trihalomethanes in excess

of the MCL over many years may

experience problems with their liver,

kidneys, or central nervous system,

and may have an increased risk of

getting cancer.

80. 81. Haloacetic Acids

(HAA5)

N/A

0.060

Some people who drink water

containing haloacetic acids in excess

of the MCL over many years may

have an increased risk of getting

cancer.

81. 82. Bromate

Zero

0.010

Some people who drink water

containing bromate in excess of the

MCL over many years may have an

increased risk of getting cancer.

177

82. 83. Chlorite

0.08

1.0

Some infants and young children who

drink water containing chlorite in

excess of the MCL could experience

nervous system effects. Similar effects

may occur in fetuses of pregnant

women who drink water containing

chlorite in excess of the MCL. Some

people may experience anemia.

83. 84. Chlorine

4 (MRDLG)

4.0 (MRDL)

Some people who use water

containing chlorine well in excess of

the MRDL could experience irritating

effects to their eyes and nose. Some

people who drink water containing

chlorine well in excess of the MRDL

could experience stomach discomfort.

84. 85. Chloramines

4 (MRDLG)

4.0 (MRDL)

Some people who use water

containing chloramines well in excess

of the MRDL could experience

irritating effects to their eyes and nose.

Some people who drink water

containing chloramines well in excess

of the MRDL could experience

stomach discomfort or anemia.

85a. 85a. Chlorine dioxide,

where any 2 two consecutive

daily samples taken at the

entrance to the distribution

system are above the MRDL

0.8

(MRDLG)

0.8 (MRDL)

Some infants and young children who

drink water containing chlorine

dioxide in excess of the MRDL could

experience nervous system effects.

Similar effects may occur in fetuses of

pregnant women who drink water

containing chlorine dioxide in excess

of the MRDL. Some people may

experience anemia.

Add for public notification only: The

chlorine dioxide violations reported

today are the result of exceedances

exceedences at the treatment facility

only, not within the distribution system

which delivers water to consumers.

Continued compliance with chlorine

dioxide levels within the distribution

system minimizes the potential risk of

these violations to consumers.

178

85b. 86a. Chlorine dioxide,

where one or more

distribution system samples

are above the MRDL

0.8

(MRDLG)

0.8 (MRDL)

Some infants and young children who

drink water containing chlorine

dioxide in excess of the MRDL could

experience nervous system effects.

Similar effects may occur in fetuses of

pregnant women who drink water

containing chlorine dioxide in excess

of the MRDL. Some people may

experience anemia.

Add for public notification only: The

chlorine dioxide violations reported

today include exceedances

exceedences of the USEPA standard

within the distribution system which

delivers water to consumers.

Violations of the chlorine dioxide

standard within the distribution system

may harm human health based on

short- term exposures. Certain

groups, including fetuses, infants, and

young children, may be especially

susceptible to nervous system effects

from excessive chlorine dioxide

exposure.

86. 87. Control of DBP

precursors (TOC)

None

Total organic carbon (TOC) has no

health effects. However, total organic

carbon provides a medium for the

formation of disinfection byproducts.

These byproducts include

trihalomethanes (THMs) and

haloacetic acids (HAAs). Drinking

water containing these byproducts in

excess of the MCL may lead to

adverse health effects, liver or kidney

problems, or nervous system effects,

and may lead to an increased risk of

getting cancer.

I. Other Treatment Techniques:

179

87. 88. Acrylamide

Zero

Some people who drink water

containing high levels of acrylamide

over a long period of time could have

problems with their nervous system or

blood, and may have an increased

risk of getting cancer.

88. 89. Epichlorohydrin

Zero

Some people who drink water

containing high levels of

epichlorohydrin over a long period of

time could experience stomach

problems, and may have an increased

risk of getting cancer.

Appendix H--Endnotes

1. “MCLG” means maximum contaminant level goal.

2. “MCL” means maximum contaminant level.

3. For a water supplier analyzing at least 40 samples per month, no more than 5.0 percent of the

monthly samples may be positive for total coliforms. For a supplier analyzing fewer than 40 samples per

month, no more than one sample per month may be positive for total coliforms.

4. There are various regulations that set turbidity standards for different types of systems, including

Section 611.320, the 1989 Surface Water Treatment Rule, and the 1998 Interim Enhanced Surface

Water Treatment Rule. The MCL for the monthly turbidity average is 1 NTU; the MCL for the 2-day

average is 5 NTU for a supplier that is required to filter but has not yet installed filtration (Section

611.320).

5. “NTU” means nephelometric turbidity unit.

6. There are various regulations that set turbidity standards for different types of systems, including

Section 611.320, the 1989 Surface Water Treatment Rule (SWTR), and the 1998 Interim Enhanced

Surface Water Treatment Rule (IESWTR). A supplier subject to the Surface Water Treatment Rule

(both filtered and unfiltered) may not exceed 5 NTU. In addition, in filtered systems, 95 percent of

samples each month must not exceed 0.5 NTU in systems using conventional or direct filtration and

must not exceed 1 NTU in systems using slow sand or diatomaceous earth filtration or other filtration

technologies approved by the Agency.

7. “TT” means treatment technique.

8. There are various regulations that set turbidity standards for different types of systems, including

Section 611.320, the 1989 Surface Water Treatment Rule (SWTR), and the 1998 Interim Enhanced

180

Surface Water Treatment Rule (IESWTR). For a supplier subject to the IESWTR (systems serving at

least 10,000 people, using surface water or groundwater under the direct influence of surface water),

that use conventional filtration or direct filtration, after January 1, 2002, the turbidity level of a system’s

combined filter effluent may not exceed 0.3 NTU in at least 95 percent of monthly measurements, and

the turbidity level of a system’s combined filter effluent must not exceed 1 NTU at any time. A supplier

subject to the IESWTR using technologies other than conventional, direct, slow sand, or diatomaceous

earth filtration must meet turbidity limits set by the Agency.

9. The bacteria detected by heterotrophic plate count (HPC) are not necessarily harmful. HPC is simply

an alternative method of determining disinfectant residual levels. The number of such bacteria is an

indicator of whether there is enough disinfectant in the distribution system.

10. SWTR and IESWTR treatment technique violations that involve turbidity exceedances exceedences

may use the health effects language for turbidity instead.

11. Millions of fibers per liter.

12. Action Level = 0.015 mg/L.

13. Action Level = 1.3 mg/L.

14. Millirems per year.

15. Picocuries per liter.

16. The uranium MCL is effective December 8, 2003 for all community water systems.

16. 17. A surface water system supplier or a groundwater system supplier under the direct influence of

surface water are regulated under Subpart B of this Part. A Supbart B community water system

supplier or a non-transient non-community system supplier that serves 10,000 or more persons must

comply with DBP MCLs and disinfectant maximum residual disinfectant levels (MRDLs) beginning

January 1, 2002. All other community and non-transient non-community system suppliers must meet

the MCLs and MRDLs beginning January 1, 2004. Subpart B transient non-community system

suppliers serving 10,000 or more persons and using chlorine dioxide as a disinfectant or oxidant must

comply with the chlorine dioxide MRDL beginning January 1, 2002. Subpart B transient non-

community system suppliers serving fewer than 10,000 persons and systems using only groundwater not

under the direct influence of surface water and using chlorine dioxide as a disinfectant or oxidant must

comply with the chlorine dioxide MRDL beginning January 1, 2004.

17. 18. The MCL of 0.10 mg/L for TTHMs is in effect until January 1, 2002 for a Subpart B

community water system supplier serving 10,000 or more persons. This MCL is in effect until January

1, 2004 for community water systems with a population of 10,000 or more using only ground water not

181

under the direct influence of surface water. After these deadlines, the MCL will be 0.080 mg/L. On

January 1, 2004, a supplier serving less than 10,000 will have to comply with the new MCL as well.

18. 19. The MCL for total trihalomethanes is the sum of the concentrations of the individual

trihalomethanes.

19. 20. The MCL for haloacetic acids is the sum of the concentrations of the individual haloacetic acids.

20. 21. “MRDLG” means maximum residual disinfectant level goal.

21. 22. “MRDL” means maximum residual disinfectant level.

BOARD NOTE: Derived from Appendix B to Subpart Q to 40 CFR 141 (2000), as added at 65

Fed. Reg. 26043 (May 4, 1999) 76751 (December 7, 2000), effective December 8, 2003.

(Source: Amended at 25 Ill. Reg. ________ effective ______________________)