On June 15, 2022, the EPA released drinking water health advisory levels for four per- and polyfluoroalkyl substances (PFAS): PFOA, PFOS, PFBS and GenX. The announcement reflects the Biden administration’s continued push to regulate PFAS.

In requesting information from its Scientific Advisory Board (SAB) on PFOA and PFOS last fall, the EPA signaled that it would seek to regulate these two chemicals at concentrations below the existing advisory levels of 70 parts per trillion (ppt). The revised advisory levels for these two substances confirm that suspicion and present new technical challenges in PFAS detection and treatment, as do the new advisory levels for PFBS and GenX.

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