How do PFAS end up in drinking water?
Drinking water contamination can come from a number of different sources:
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discharges from manufacturing facilities that use PFAS
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discharges from wastewater treatment plants
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water that percolates down through the soil around landfills
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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.