Proposed MCL Goals for PFOA and PFOS in Drinking Water

August 2, 2021:

DEP’s Public Water System Technical Assistance Center Board (TAC) met July 29, 2021on a pre-draft regulation setting a state Maximum Contaminant Level and MCL Goals for PFOA and PFOS in drinking water.

DEP recommended a Maximum Contaminant Level of 14 ppt (parts per trillion) for PFOA and a Maximum Contaminant Level Goal of 8 ppt.

DEP recommended a Maximum Contaminant Level of 18 ppt for PFOS and a Maximum Contaminant Level Goal of 14 ppt.

Pennsylvania’s current health advisory is 70 ppt for PFOA and PFOS in drinking water.

The TAC Board recommended the pre-draft regulation move forward through the regulatory process.

Click here for the TAC Board's comment letter.

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