EPA announces intent to extend PFOA/PFOS drinking water compliance timeline and reconsider other PFAS determinations under the PFAS NPDWR

EPA announced it will keep the National Primary Drinking Water Regulation (NPDWR) maximum contaminant levels (MCLs) for PFOA and PFOS, but intends to pursue a rulemaking to extend the compliance deadline to 2031 (with finalization targeted for Spring 2026). EPA also stated its intent to rescind and reconsider the regulations/regulatory determinations for PFHxS, PFNA, HFPO-DA (GenX), and the Hazard Index mixture approach. Compliance teams at public water systems and supporting suppliers should monitor for the proposed rule and any Federal Register publication that sets concrete compliance dates and scope changes.