EPA states it will keep PFOA/PFOS MCLs but intends to extend compliance deadlines, add an exemption framework, and reconsider other PFAS components

EPA announced (and reiterated on its PFAS drinking water rule page) that it will maintain the existing NPDWR maximum contaminant levels (MCLs) for PFOA and PFOS, but intends to pursue rulemaking to extend the PFOA/PFOS compliance deadlines and establish a federal exemption framework. EPA also stated its intent to rescind and reconsider the NPDWR components for PFHxS, PFNA, HFPO-DA (GenX), and the Hazard Index mixture (PFHxS+PFNA+HFPO-DA+PFBS), citing process considerations under SDWA. Compliance teams supporting public water systems and primacy agencies should monitor for the forthcoming proposed and final rulemaking because it may change compliance timelines and potentially the regulated PFAS set beyond PFOA/PFOS.