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Safe Exposure Is Near Zero for Two PFAS Chemicals, EPA Says (2)

June 15, 2022, 1:00 PMUpdated: June 15, 2022, 5:39 PM

Virtually no amount of exposure to two major types of PFAS in drinking water is safe, according to two updated interim health advisories the EPA issued Wednesday.

The interim advisories are for PFOA and PFOS, the most well-studied members of a group of “forever chemicals” called per- and polyfluoroalkyl substances, or PFAS.

The updated advisory levels of .004 parts per trillion (ppt) for perfluorooctanoic acid (PFOA) and .02 ppt for perfluorooctanesulfonic acid (PFOS) dramatically tighten the Environmental Protection Agency’s 2016 advisory of 70 ppt for either compound or a combination of both.

The agency also issued new, final advisories for ...