The U.S. Environmental Protection Agency (EPA) has been busy recently. For years, per- and polyfluoroalkyl substances (PFAS) were considered “emerging contaminants” in the environmental world. As evidenced by recent EPA actions, it is safe to say that PFAS have fully emerged.

In this article, I will explore two of the most significant recent EPA actions in its continuing effort to regulate PFAS, as well as the likely effects of those actions. I will also discuss the possible implications of the Supreme Court’s widely anticipated repeal of the Chevron doctrine on the EPA’s recent PFAS actions.

EPA Sets Drinking Water MCLs for PFAS