EPA announces intent to keep PFOA/PFOS drinking water MCLs while pursuing rulemaking to extend compliance timeline to 2031 and reconsider other PFAS components

EPA announced it will retain the National Primary Drinking Water Regulation (NPDWR) maximum contaminant levels (MCLs) for PFOA and PFOS, but intends to extend the associated compliance deadline to 2031 through future rulemaking. EPA also signaled its intent to rescind and reconsider the regulatory determinations for PFHxS, PFNA, HFPO-DA (GenX), and the Hazard Index mixture approach (PFHxS, PFNA, HFPO-DA, PFBS). Compliance teams for public water systems and regulated entities should monitor forthcoming proposed and final rulemaking for changes to compliance timelines and the scope of PFAS regulated under the NPDWR.