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Illinois Sets PFAS Drinking Water Compliance Deadlines
35 Illinois Administrative Code Part 620 (Groundwater Quality)Illinois Environmental Protection AgencyIllinois
Announced
May 21, 2026
Effective
Apr 26, 2029
Implementation
Apr 25, 2027
Description
Illinois EPA announced the implementation timeline for PFAS drinking water standards under 35 Illinois Administrative Code Part 620. Community Water Supplies must complete initial monitoring by April 25, 2027; ongoing compliance monitoring begins April 26, 2027; and compliance with Maximum Contaminant Levels (MCLs) begins April 26, 2029. Illinois reaffirmed it will maintain its PFAS drinking water standards regardless of federal EPA changes.
Sources
Key Findings
Illinois Sets PFAS Drinking Water Compliance Deadlines
May 21, 2026 Kim Biggs, Illinois EPA FOR IMMEDIATE RELEASE 217-558-1536 kim.biggs@illinois.gov Illinois EPA Issues Statement on Trump Administration’s Rollback of PFAS Requirements for Drinking Water State Drinking Water Standards Remain in Place for PFAS Springfield – Illinois Environmental Protection Agency’s (Illinois EPA) Director James Jennings issued a statement following the U.S. EPA’s announcement to roll bac
Illinois Sets PFAS Drinking Water Compliance Deadlines
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