Illinois EPA reaffirms PFAS drinking water standards will remain in effect

Illinois EPA Director James Jennings issued a formal statement confirming that Illinois will maintain its state-specific PFAS drinking water standards despite federal EPA's proposed rollback of four PFAS MCLs. Illinois groundwater standards for HFPO-DA (GenX), PFBS, PFHxS, PFNA, PFOA, and PFOS remain in effect. Community water supplies must still comply with state initial monitoring deadlines (April 25, 2027) and MCL compliance requirements (April 26, 2029).