EPA announces it will keep PFOA/PFOS MCLs and pursue rulemaking to extend PFAS NPDWR compliance timeline and reconsider other PFAS components

EPA announced it will keep the National Primary Drinking Water Regulation (NPDWR) maximum contaminant levels (MCLs) for PFOA and PFOS, while signaling it intends to extend the compliance timeline via future rulemaking and establish a federal exemption framework. EPA also indicated it plans to rescind and reconsider regulatory determinations/regulations for PFHxS, PFNA, HFPO-DA (GenX), and the Hazard Index mixture approach to ensure the Safe Drinking Water Act process is followed. Compliance teams at drinking water systems and impacted upstream suppliers should monitor forthcoming proposed/final rulemaking and potential changes to treatment/monitoring obligations and timelines.