PFAS in Wisconsin water

The EPA tested public water systems across Wisconsin for 29 PFAS. In 23 of them, at least one came back above a federal limit. Find your system below — you'll get the actual levels, our plain verdict on each compound, and the filter that genuinely removes it. We sell nothing.

Not listed? Your system may not have been sampled, or nothing exceeded a limit — see the national picture.

• Concor Tool & Machine Inc 2 over the limit
• Eau Claire Waterworks 1 over the limit
• Hartford Waterworks, Wi 2 over the limit
• Hartland Waterworks 2 over the limit
• Kewaskum Waterworks 1 over the limit
• La Crosse Waterworks 2 over the limit
• Lake Geneva Utility Commission 1 over the limit
• Marshfield Utilities 2 over the limit
• Medford Waterworks 1 over the limit
• Palmyra Waterworks 1 over the limit
• Pewaukee City Water And Sewer Utility 3 over the limit
• Prairie Du Chien Waterworks 1 over the limit
• Prescott Waterworks 2 over the limit
• Rhinelander Water & Wastewater 1 over the limit
• Rib Mountain Sanitary Dist 2 over the limit
• Saukville Waterworks 3 over the limit
• Schofield Waterworks 1 over the limit
• Sheboygan Tn Waterworks 1 over the limit
• Sturgeon Bay Waterworks 2 over the limit
• Tomahawk Waterworks 1 over the limit
• Waupaca Waterworks 1 over the limit
• West Bend Waterworks 1 over the limit
• Weston Municipal Utilities 2 over the limit

Source: US EPA UCMR 5 occurrence data, 2023–2025. · All states