On June 1, 2023, the Board proposed—for public comment—amendments to Illinois’ primary drinking water regulations at 35 Ill. Adm. Code 611. The proposed amendments are “identical in substance” to rule amendments adopted by the United States Environmental Protection Agency (USEPA) during the second half of 2020 and the second half of 2021. Among its amendments, USEPA revised standards for lead in plumbing fixtures and plumbing materials, adopted the Lead and Copper Rule Revisions (LCRR), and approved new alternative test procedures (ATPs) for demonstrating compliance with the National Primary Drinking Water Regulations.
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