EPA announces intent to keep PFOA/PFOS MCLs while extending compliance timeline and reconsidering other PFAS determinations

EPA announced it will keep the existing National Primary Drinking Water Regulation (NPDWR) maximum contaminant levels (MCLs) for PFOA and PFOS, but plans to pursue rulemaking to extend the compliance date (EPA references moving from 2029 to 2031). EPA also stated its intent to rescind/reconsider regulatory determinations for PFHxS, PFNA, HFPO‑DA (GenX), and the Hazard Index mixture approach. Compliance teams for public water systems and impacted suppliers should monitor the forthcoming proposal and final rule timing because it may extend implementation schedules for PFOA/PFOS while changing scope for other PFAS components.