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US Environmental Protection Agency Announces Final Drinking Water Maximum Contaminant Levels for Six Per- and Poly-Fluorinated Substances (PFAS)
At a Glance
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On April 10th, the US EPA announced its final Drinking Water Maximum Contaminant Level (MCLs) for six Per-and Poly-Fluorinated substances (PFAS). The EPA regulation establishes MCLs for five individual PFAS (PFOA, PFOS, PFHxS, PFNA, and HFPO-DA, also known as GenX) and an additional MCL for combinations of four PFAS (PFHxS, PFNA, HFPO-DA, and PFBS).
The current analytical methods can measure concentrations of PFAS at and near the MCLs. The EPA has designated Maximum Contaminant Level Goals (MCLGs) of “zero� for PFOA and PFOS.