The record-low health advisories form part of the EPA’s 2021 PFAS Strategic Roadmap, which forecasts further regulatory action at both state and federal levels.

By Julia Hatcher, Kegan A. Brown, Thomas C. Pearce, Taylor West, Andy Landolfi, and Phil Sandick

On June 15, 2022, the United States Environmental Protection Agency (EPA) issued interim, updated drinking water health advisories (HA) for two of the most common per- and polyfluoroalkyl substances (PFAS): perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS).[1] EPA also issued two final HAs for perfluorobutane sulfonic acid and its potassium salt (PFBS) and hexafluoropropylene oxide and its ammonium salt (GenX).[2]