PFAS · Wisconsin

PFAS in Wisconsin Drinking Water — 0 Violations

EPA data analysis for pfas in Wisconsin drinking water systems

0
ZIPs with Violations
4 ppt (PFOA/PFOS)
EPA Limit
High
Health Risk
Reverse Osmosis or Granular Activated Carbon
Best Filter Method

PFAS Contamination in Wisconsin

ZipCheckup analyzed EPA enforcement records across 898 ZIP codes in Wisconsin. 0 ZIP codes have pfas-related violations on record.

EPA Standard for PFAS

The EPA maximum contaminant level (MCL) for pfas is 4 ppt (PFOA/PFOS), governed by the PFAS NPDWR (2024). Water systems that exceed this limit must take corrective action and notify consumers.

Health Effects of PFAS

PFAS (per- and polyfluoroalkyl substances) are linked to cancer (kidney, testicular), thyroid disease, immune system suppression, reproductive problems, and elevated cholesterol. These "forever chemicals" persist in the body for years.

How to Remove PFAS From Drinking Water

The most effective treatment for pfas removal is Reverse Osmosis or Granular Activated Carbon. Look for filters certified under NSF 53 / NSF 58 standards.

Check Your ZIP Code

Use the ZipCheckup water quality search to see pfas data for your specific water system in Wisconsin.

Cities with PFAS Data in Wisconsin

50 cities in Wisconsin have pfas testing data available.

+ 30 more cities

Wisconsin Water Quality Overview: See statewide water quality rankings on the Wisconsin water quality page.
Learn more about PFAS: Read the full guide on PFAS in drinking water.
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