EPA Proposes First-Ever Enforceable Nationwide Primary Drinking Water Standards for PFAS

May 2023

Environmental, Energy & Climate Change Law and Regulation Reporter, Volume 3, Number 8

On March 29, 2023 the U.S. Environmental Protection Agency (EPA) published a preliminary regulatory determination and a proposed rule that would establish first-ever legally enforceable federal primary Maximum Contaminant Levels (MCLs) for six per- and polyfluoroalkyl substances (PFAS) in drinking water. In addition to creating these enforceable national drinking standards, these MCLs, if adopted, could be used as a benchmark for establishing groundwater remediation goals or be used in other regulatory or litigation contexts. EPA expects to finalize the rulemaking by the of this calendar year.

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