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How do PFAS end up in drinking water?

Drinking water contamination can come from a number of different sources:

  • discharges from manufacturing facilities that use PFAS

  • discharges from wastewater treatment plants

  • water that percolates down through the soil around landfills

  • firefighting foams that run off into surface waters


The Wisconsin Department of Natural Resources (DNR) maintains a of sites in Wisconsin with potential and confirmed PFAS contamination in soil and groundwater. Click here to open the interactive map.

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