EPA announces it will keep PFOA/PFOS MCLs and intends to extend PFAS NPDWR compliance timeline to 2031 while reconsidering other PFAS components

EPA announced it will keep the existing Maximum Contaminant Levels (MCLs) for PFOA and PFOS under the PFAS National Primary Drinking Water Regulation (NPDWR) and intends to propose extending the compliance date from 2029 to 2031. EPA also signaled it intends to rescind and reconsider the determinations/regulatory approach for PFHxS, PFNA, HFPO‑DA (GenX), and the Hazard Index mixture (PFHxS+PFNA+HFPO‑DA+PFBS). This is an announced upcoming rulemaking direction and timeline shift (not a finalized deadline change yet), relevant to public water systems and affected stakeholders planning for compliance and potential changes to which PFAS are regulated under the NPDWR.