EPA proposes rescinding NPDWR provisions for PFHxS, PFNA, HFPO‑DA (GenX) and Hazard Index mixtures (incl. PFBS); hearing set for July 7, 2026

EPA issued a proposed rule under the Safe Drinking Water Act to rescind prior regulatory determinations and remove associated NPDWR provisions (including MCLs/MCLGs and related monitoring/treatment/reporting requirements) for PFHxS, PFNA, HFPO‑DA (GenX chemicals), and Hazard Index mixtures of these PFAS plus PFBS. EPA also announced a virtual public hearing scheduled for July 7, 2026 with a pre-registration deadline of July 1, 2026. Compliance teams supporting public water systems and product/utility stakeholders should monitor the docket and proposal closely because it would remove federal drinking-water requirements for these PFAS if finalized and could alter monitoring, treatment, and public notification planning.