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ARTICLE · 18 APRIL 2024

USEPA Announces Final PFAS Drinking Water Rule, Extends Compliance Timeline

Vorys Sater Seymour & Pease
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On Wednesday, April 10, 2024, the United Stated Environmental Protection Agency (USEPA) announced that it will publish a final PFAS National Primary Drinking Water Regulation...

United StatesEnvironment
Kristin L. Watt
Kristin L. Watt
Nina I. Webb-Lawton
Nina I. Webb-Lawton
Brooke Zentmeyer
Brooke Zentmeyer

On Wednesday, April 10, 2024, the United Stated Environmental Protection Agency (USEPA) announced that it will publish a final PFAS National Primary Drinking Water Regulation (PFAS Drinking Water Rule) that will set legally enforceable limits for six PFAS in drinking water, including 4 parts per trillion (ppt) limits for PFOS and PFOA. Public Water Systems (PWSs) will have three years to comply with the Rule's initial monitoring requirements. The Final PFAS Drinking Water Rule also extends the compliance timeline USEPA initially proposed for the Rule's enforceable limits by two years—under the final Rule, a PWS has five years to comply with the Rule's enforceable limits.

The final Rule will establish:

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