PFAS in Wisconsin drinking water
54 community water systems tested
1.9%
of tested systems detected PFOA or PFOS
(1/54)
(1/54)
Water systems
PFAS value per system, 2023–2025. EPA limit — 4 ppt (0.004 µg/L) for PFOA and PFOS, set in 2024. Systems that detected PFOA or PFOS
are highlighted and listed first. “Not detected” means the contaminant was measured but
not found.
| System | City | Population | PFAS (ug/L) |
|---|---|---|---|
| PALMYRA WATERWORKS | PALMYRA | 1,756 | 0.0062 ug/L |
| MILWAUKEE WATERWORKS | MILWAUKEE | 626,000 | Not detected |
| KENOSHA WATER UTILITY | KENOSHA | 99,218 | Not detected |
| WEST ALLIS WATERWORKS | WEST ALLIS | 63,240 | Not detected |
| WAUWATOSA WATERWORKS | WAUWATOSA | 49,064 | Not detected |
| NORTH SHORE WATER COMMISSION | GLENDALE | 35,598 | Not detected |
| OAK CREEK WATERWORKS | OAK CREEK | 32,104 | Not detected |
| FITCHBURG UTILITY DIST 1 | FITCHBURG | 24,500 | Not detected |
| WATERTOWN WATERWORKS | WATERTOWN | 23,945 | Not detected |
| FRANKLIN WATER UTILITY | FRANKLIN | 22,500 | Not detected |
| SOUTH MILWAUKEE WATERWORKS | SOUTH MILWAUKEE | 21,340 | Not detected |
| CUDAHY WATERWORKS | CUDAHY | 18,659 | Not detected |
| BEAVER DAM WATER UTILITY | BEAVER DAM | 16,200 | Not detected |
| GREENDALE WATERWORKS | GREENDALE | 14,393 | Not detected |
| WHITEFISH BAY WATERWORKS | WHITEFISH BAY | 14,272 | Not detected |
| VERONA WATERWORKS | VERONA | 14,030 | Not detected |
| SHOREWOOD WATERWORKS | SHOREWOOD | 13,535 | Not detected |
| STOUGHTON WATERWORKS | STOUGHTON | 13,078 | Not detected |
| GLENDALE WATERWORKS | GLENDALE | 12,883 | Not detected |
| BROWN DEER WATERWORKS | BROWN DEER | 12,741 | Not detected |
| BARABOO WATERWORKS | BARABOO | 12,703 | Not detected |
| PLATTEVILLE WATERWORKS | PLATTEVILLE | 12,268 | Not detected |
| OREGON WATERWORKS | OREGON | 11,200 | Not detected |
| MONROE WATERWORKS | MONROE | 10,780 | Not detected |
| PLEASANT PRAIRIE WATER UTILITY | PLEASANT PRAIRIE | 10,754 | Not detected |
| PORTAGE WATERWORKS | PORTAGE | 10,437 | Not detected |
| MCFARLAND WATERWORKS | MC FARLAND | 9,676 | Not detected |
| COTTAGE GROVE WATERWORKS | COTTAGE GROVE | 9,345 | Not detected |
| MONONA WATERWORKS | MONONA | 8,624 | Not detected |
| WAUPUN UTILITIES | WAUPUN | 8,056 | Not detected |
| JEFFERSON WATERWORKS | JEFFERSON | 7,926 | Not detected |
| MT HOREB WATERWORKS | MOUNT HOREB | 7,756 | Not detected |
| FOX POINT WATERWORKS | FOX POINT | 6,808 | Not detected |
| LAKE MILLS WATERWORKS | LAKE MILLS | 6,211 | Not detected |
| MILTON WATERWORKS | MILTON | 5,588 | Not detected |
| EDGERTON WATERWORKS | EDGERTON | 5,512 | Not detected |
| RICHLAND CENTER WATERWORKS | RICHLAND CENTER | 5,100 | Not detected |
| DODGEVILLE WATERWORKS | DODGEVILLE | 4,583 | Not detected |
| ONEIDA #1 OR SITE #1 | 4,393 | Not detected | |
| CROSS PLAINS WATERWORKS | CROSS PLAINS | 4,100 | Not detected |
| KESHENA | 3,960 | Not detected | |
| LANCASTER WATERWORKS | LANCASTER | 3,907 | Not detected |
| MARSHALL WATERWORKS | MARSHALL | 3,862 | Not detected |
| WAUPUN CORRECTIONAL INST | WAUPUN | 3,706 | Not detected |
| HORICON WATERWORKS | HORICON | 3,682 | Not detected |
| WATERLOO WATERWORKS | WATERLOO | 3,520 | Not detected |
| SAUK CITY WATERWORKS | SAUK CITY | 3,518 | Not detected |
| LAC DU FLAMBEAU | 2,962 | Not detected | |
| SOUTH-CENTRAL WATER SYSTEM | 2,805 | Not detected | |
| CLINTON WATERWORKS | CLINTON | 2,119 | Not detected |
| SOMERS WATER UTILITY | SOMERS | 1,930 | Not detected |
| SHULLSBURG WATERWORKS | SHULLSBURG | 1,222 | Not detected |
| ARENA WATERWORKS | ARENA | 877 | Not detected |
| BLOOMINGTON WATERWORKS | BLOOMINGTON | 682 | Not detected |