Wisconsin PFAS compliance
PFAS contamination data for 500 water systems in Wisconsin, serving 4,241,863 people.
Total systems
500
Exceed MCL
22
At risk
0
Compliant
170
Settlement eligible
74
Wisconsin PFAS regulatory overview
State standards
State standardsWisconsin has its own PFAS standards
PFOA MCL: 20 ppt(EPA: 4 ppt)
PFOS MCL: 20 ppt(EPA: 4 ppt)
WI recommended groundwater standards: PFOA 20 ppt, PFOS 20 ppt. Proposed combined PFOA+PFOS standard of 70 ppt.
Regulatory agency
Wisconsin has proposed PFAS groundwater standards. Extensive contamination around Marinette (Tyco/Johnson Controls) and military installations.
Get weekly PFAS compliance alerts for Wisconsin
Water systems
| System | City | Population | PFOA (ppt) | PFOS (ppt) | Status |
|---|---|---|---|---|---|
| MILWAUKEE WATERWORKS WI2410100 | MILWAUKEE | 626,000 | — | — | Compliant |
| MADISON WATER UTILITY WI1130224 | MADISON | 272,000 | — | — | Compliant |
| GREEN BAY WATERWORKS WI4050356 | GREEN BAY | 107,369 | — | — | Compliant |
| RACINE WATERWORKS WI2520062 | RACINE | 105,100 | — | — | Compliant |
| KENOSHA WATER UTILITY WI2300046 | KENOSHA | 99,218 | — | — | Compliant |
| APPLETON WATERWORKS WI4450333 | APPLETON | 74,511 | — | — | Compliant |
| WAUKESHA WATER UTILITY WI2680238 | WAUKESHA | 70,718 | — | — | Compliant |
| EAU CLAIRE WATERWORKS WI6180230 | EAU CLAIRE | 70,587 | — | — | Exceeds |
| JANESVILLE WATER UTILITY WI1540127 | JANESVILLE | 64,415 | — | — | Compliant |
| WEST ALLIS WATERWORKS WI2410595 | West Allis | 63,240 | — | — | Compliant |
| OSHKOSH WATERWORKS WI4710457 | OSHKOSH | 63,000 | — | — | Compliant |
| LA CROSSE WATERWORKS WI6320309 | LA CROSSE | 53,000 | 5.1 | 5.5 | Exceeds |
| SHEBOYGAN WATER UTILITIES WI4600354 | SHEBOYGAN | 49,931 | — | — | Compliant |
| WAUWATOSA WATERWORKS WI2410596 | Wauwatosa | 49,064 | — | — | Compliant |
| FOND DU LAC WATERWORKS WI4200469 | FOND DU LAC | 44,303 | — | — | Compliant |
| WAUSAU WATERWORKS WI7370102 | WAUSAU | 39,994 | — | — | Compliant |
| BELOIT CITY OF WI1540112 | BELOIT | 36,677 | — | — | Compliant |
| NORTH SHORE WATER COMMISSION WI2413515 | MILWAUKEE | 35,598 | — | — | Compliant |
| MANITOWOC WATERWORKS WI4360364 | MANITOWOC | 34,500 | — | — | Compliant |
| SUN PRAIRIE UTILITIES WI1130258 | SUN PRAIRIE | 33,966 | — | — | Compliant |
| OAK CREEK WATERWORKS WI2410172 | Oak Creek | 32,104 | — | — | Compliant |
| WEST BEND WATERWORKS WI2670120 | WEST BEND | 31,752 | 6.5 | — | Exceeds |
| BROOKFIELD WATER UTILITY WI2680253 | Brookfield | 29,070 | — | — | Compliant |
| NEW BERLIN WATER UTILITY WI2680217 | NEW BERLIN | 27,899 | — | — | Compliant |
| NEENAH WATERWORKS WI4710348 | NEENAH | 27,506 | — | — | Compliant |
| STEVENS POINT WATERWORKS WI7500141 | STEVENS POINT | 26,717 | — | — | Compliant |
| SUPERIOR WATER LIGHT & POWER COMPANY WI8160147 | SUPERIOR | 26,084 | — | — | Compliant |
| DE PERE WATERWORKS SA 1 WI4050453 | DE PERE | 25,660 | — | — | Compliant |
| FITCHBURG UTILITY DIST 1 WI1130231 | FITCHBURG | 24,500 | — | — | Compliant |
| WATERTOWN WATERWORKS WI1280044 | WATERTOWN | 23,945 | — | — | Compliant |
| MIDDLETON WATERWORKS WI1130242 | MIDDLETON | 23,868 | — | — | Compliant |
| MENOMONEE FALLS WW - SURFACE WATER WI2680082 | MENOMONEE FALLS | 23,867 | — | — | Compliant |
| FRANKLIN WATER UTILITY WI2410563 | FRANKLIN | 22,500 | — | — | Compliant |
| CALEDONIA WATER UTILITY - VILLAGE OF WI2520184 | RACINE | 21,819 | — | — | Compliant |
| GRAND CHUTE TN SAN DIST 1 WI4450429 | GRAND CHUTE | 21,583 | — | — | Compliant |
| SOUTH MILWAUKEE WATERWORKS WI2410144 | SOUTH MILWAUKEE | 21,340 | — | — | Compliant |
| HOWARD WATERWORKS WI4050468 | GREEN BAY | 21,133 | — | — | Compliant |
| GERMANTOWN WATER UTILITY WI2670105 | GERMANTOWN | 20,027 | — | — | Compliant |
| WIS RAPIDS WATER WORKS & LIGHTING COMM WI7720108 | WISCONSIN RAPIDS | 20,000 | — | — | Compliant |
| MARSHFIELD UTILITIES WI7720165 | MARSHFIELD | 18,815 | — | 14 | Exceeds |
| CUDAHY WATERWORKS WI2410169 | Cudahy | 18,659 | — | — | Compliant |
| ONALASKA WATERWORKS WI6320327 | Onalaska | 18,000 | — | — | Compliant |
| FOX CROSSING UTILITIES WEST WI4710358 | NEENAH | 18,000 | — | — | Compliant |
| ASHWAUBENON WATERWORKS WI4050456 | ASHWAUBENON | 17,730 | — | — | Compliant |
| HUDSON WATERWORKS WI6560087 | HUDSON | 17,635 | — | — | Compliant |
| KAUKAUNA UTILITIES WI4450336 | KAUKAUNA | 17,493 | — | — | Compliant |
| BELLEVUE WATERWORKS WI4050459 | GREEN BAY | 16,715 | — | — | Compliant |
| BEAVER DAM WATER UTILITY WI1140059 | BEAVER DAM | 16,200 | — | — | Compliant |
| WESTON MUNICIPAL UTILITIES WI7370163 | WESTON | 16,000 | 5.9 | 13 | Exceeds |
| RIVER FALLS WATERWORKS WI6480246 | River Falls | 16,000 | — | — | Compliant |
| MENOMONIE WATERWORKS WI6170268 | Menomonie | 15,950 | — | — | Compliant |
| OCONOMOWOC WATERWORKS WI2680227 | Oconomowoc | 15,805 | — | — | Compliant |
| HARTFORD WATERWORKS WI2670110 | HARTFORD | 15,805 | 6.8 | 5.5 | Exceeds |
| MENASHA ELEC & WATER UTIL WI4710334 | MENASHA | 15,144 | — | — | Compliant |
| WAUNAKEE WATERWORKS WI1130265 | WAUNAKEE | 14,879 | — | — | Compliant |
| GREENDALE WATERWORKS WI2410571 | Greendale | 14,393 | — | — | Compliant |
| WHITEFISH BAY WATERWORKS WI2410597 | MILWAUKEE | 14,272 | — | — | Compliant |
| ALLOUEZ WATERWORKS WI4050455 | GREEN BAY | 14,156 | — | — | Compliant |
| VERONA WATERWORKS WI1130259 | VERONA | 14,030 | — | — | Compliant |
| WHITEWATER WATERWORKS WI2650056 | WHITEWATER | 14,000 | — | — | Compliant |
| SHOREWOOD WATERWORKS WI2410607 | SHOREWOOD | 13,535 | — | — | Compliant |
| PLOVER WATERWORKS WI7500726 | PLOVER | 13,486 | — | — | Compliant |
| CHIPPEWA FALLS WATERWORKS WI6090456 | CHIPPEWA FALLS | 13,375 | — | — | Compliant |
| STOUGHTON WATERWORKS WI1130078 | STOUGHTON | 13,078 | — | — | Compliant |
| DARBOY SANITARY DIST 1 WI4450117 | APPLETON | 13,024 | — | — | Compliant |
| GLENDALE WATERWORKS WI2410168 | GLENDALE | 12,883 | — | — | Compliant |
| PORT WASHINGTON WATERWORKS WI2460054 | PORT WASHINGTON | 12,853 | — | — | Compliant |
| BROWN DEER WATERWORKS WI2410556 | BROWN DEER | 12,741 | — | — | Compliant |
| BARABOO WATERWORKS WI1570085 | BARABOO | 12,703 | — | — | Compliant |
| FORT ATKINSON WATERWORKS WI1280103 | FORT ATKINSON | 12,390 | — | — | Compliant |
| GRAFTON WATERWORKS WI2460111 | GRAFTON | 12,269 | — | — | Compliant |
| PLATTEVILLE WATERWORKS WI1220115 | PLATTEVILLE | 12,268 | — | — | Compliant |
| LITTLE CHUTE WATERWORKS WI4450338 | LITTLE CHUTE | 12,168 | — | — | Compliant |
| CEDARBURG L & W COMMISSION WI2460108 | CEDARBURG | 11,800 | — | — | Compliant |
| SUSSEX VILLAGE HALL & WATER UTILITY WI2680233 | Sussex | 11,750 | — | — | Compliant |
| GREENVILLE UTILITIES VIL OF WI4450278 | GREENVILLE | 11,340 | — | — | Compliant |
| TWO RIVERS WATERWORKS WI4360436 | TWO RIVERS | 11,270 | — | — | Compliant |
| OREGON WATERWORKS WI1130251 | OREGON | 11,200 | — | — | Compliant |
| MEQUON WATER UTILITY WI2460112 | MEQUON | 11,152 | — | — | Compliant |
| MARINETTE WATERWORKS WI4380395 | MARINETTE | 10,968 | — | — | Compliant |
| FOX CROSSING UTILITIES EAST WI4710453 | NEENAH | 10,927 | — | — | Compliant |
| NEW RICHMOND WATERWORKS WI6560126 | NEW RICHMOND | 10,824 | — | — | Compliant |
| MONROE WATERWORKS WI1230078 | MONROE | 10,780 | — | — | Compliant |
| PLEASANT PRAIRIE WATER UTILITY WI2300167 | PLEASANT PRAIRIE | 10,754 | — | — | Compliant |
| DEFOREST WATERWORKS WI1130221 | DEFOREST | 10,500 | — | — | Compliant |
| PORTAGE WATERWORKS WI1110039 | PORTAGE | 10,437 | — | — | Compliant |
| ELKHORN WATERWORKS WI2650062 | ELKHORN | 10,317 | — | — | Compliant |
| HOLMEN WATERWORKS WI6320306 | Holmen | 10,147 | — | — | Compliant |
| SPARTA WATERWORKS WI6420297 | Sparta | 10,025 | — | — | Compliant |
| FORT MCCOY NORTH POST WI6420302 | FORT MCCOY | 10,000 | — | — | Compliant |
| REEDSBURG WATERWORKS WI1570102 | REEDSBURG | 9,984 | — | — | Compliant |
| BURLINGTON WATERWORKS WI2520177 | BURLINGTON | 9,958 | — | — | Compliant |
| STURGEON BAY WATERWORKS WI4150526 | STURGEON BAY | 9,700 | — | 4.2 | Exceeds |
| MCFARLAND WATERWORKS WI1130241 | MCFARLAND | 9,676 | — | — | Compliant |
| MERRILL WATERWORKS WI7350123 | MERRILL | 9,661 | — | — | Compliant |
| ALTOONA WATERWORKS WI6180280 | Altoona | 9,627 | — | — | Compliant |
| COTTAGE GROVE WATERWORKS WI1130218 | COTTAGE GROVE | 9,345 | — | — | Compliant |
| HARTLAND WATERWORKS WI2680205 | HARTLAND | 9,212 | 4.4 | 4.6 | Exceeds |
| SHAWANO WATERWORKS WI4590456 | SHAWANO | 9,200 | — | — | Compliant |
| TOMAH WATERWORKS WI6420254 | TOMAH | 9,192 | — | — | Compliant |
| RICE LAKE WATERWORKS WI6030138 | RICE LAKE | 9,012 | — | — | Compliant |
| PLYMOUTH UTILITIES WI4600446 | PLYMOUTH | 8,964 | — | — | Compliant |
| PEWAUKEE CITY WATER AND SEWER UTILITY WI2680214 | PEWAUKEE | 8,671 | 8.5 | 12 | Exceeds |
| MONONA WATERWORKS WI1130245 | MONONA | 8,624 | — | — | Compliant |
| DELAVAN WATERWORKS WI2650113 | DELAVAN | 8,451 | — | — | Compliant |
| RHINELANDER WATER & WASTEWATER WI7440126 | RHINELANDER | 8,234 | 6.8 | — | Exceeds |
| MUKWONAGO WATERWORKS WI2680209 | MUKWONAGO | 8,190 | — | — | Compliant |
| PEWAUKEE VILLAGE WATERWORKS WI2680229 | PEWAUKEE | 8,166 | — | — | Compliant |
| SHEBOYGAN FALLS UTILITIES WI4600455 | SHEBOYGAN FALLS | 8,165 | — | — | Compliant |
| MUSKEGO WATER UTILITY WI2681741 | MUSKEGO | 8,150 | — | — | Compliant |
| WAUPUN UTILITIES WI1140131 | WAUPUN | 8,056 | — | — | Compliant |
| ASHLAND WATER UTILITY WI8020373 | ASHLAND | 8,000 | — | — | Compliant |
| JEFFERSON WATERWORKS WI1280104 | JEFFERSON | 7,926 | — | — | Compliant |
| JACKSON WATERWORKS WI2670111 | JACKSON | 7,844 | — | — | Compliant |
| ANTIGO WATERWORKS WI7340086 | Antigo | 7,780 | — | — | Compliant |
| MT HOREB WATERWORKS WI1130247 | MOUNT HOREB | 7,756 | — | — | Compliant |
| RIPON WATER UTILITY WI4200476 | RIPON | 7,716 | — | — | Compliant |
| KIMBERLY WATERWORKS WI4450342 | KIMBERLY | 7,608 | — | — | Compliant |
| LEDGEVIEW TN SANITARY DIST 2 WI4051418 | DE PERE | 7,602 | — | — | Compliant |
| NEW LONDON WATERWORKS WI4690398 | NEW LONDON | 7,187 | — | — | Compliant |
| LAKE GENEVA UTILITY COMMISSION WI2650066 | Lake Geneva | 7,107 | 4.7 | — | Exceeds |
| KRONENWETTER WATER & SEWER UTILITY WI7371700 | KRONENWETTER | 6,931 | — | — | Compliant |
| FOX POINT WATERWORKS WI2410584 | FOX POINT | 6,808 | — | — | Compliant |
| LAKE HALLIE WATERWORKS VILLAGE OF WI6090849 | LAKE HALLIE | 6,701 | — | — | Compliant |
| TOWN OF BROOKFIELD SAN DIST 4 WI2680239 | BROOKFIELD | 6,419 | — | — | Compliant |
| RIB MOUNTAIN WATER UTILITY WI7370660 | WAUSAU | 6,398 | 5.2 | 9.4 | Exceeds |
| LAKE MILLS WATERWORKS WI1280108 | LAKE MILLS | 6,211 | — | — | Compliant |
| WAUPACA WATERWORKS WI4690402 | WAUPACA | 6,062 | — | 4.3 | Exceeds |
| PRAIRIE DU CHIEN WATERWORKS WI6120250 | PRAIRIE DU CHIEN | 6,005 | — | 11 | Exceeds |
| EVANSVILLE WATERWORKS WI1540047 | EVANSVILLE | 5,703 | — | — | Compliant |
| SLINGER WATER UTILITY WI2670116 | Slinger | 5,659 | — | — | Compliant |
| MILTON WATERWORKS WI1540130 | MILTON | 5,588 | — | — | Compliant |
| BERLIN WATERWORKS WI4240216 | BERLIN | 5,524 | — | — | Compliant |
| EDGERTON WATERWORKS WI1540119 | EDGERTON | 5,512 | — | — | Compliant |
| HARRISON UTILITIES - FKA WAVERLY SD WI4080076 | MENASHA | 5,500 | — | — | Compliant |
| HO CHUNK CASINO WI1570639 | BLACK RIVER FALLS | 5,486 | — | — | Compliant |
| LAWRENCE WATERWORKS WI4051625 | DE PERE | 5,398 | — | — | Compliant |
| WATERFORD WATERWORKS WI2520202 | WATERFORD | 5,368 | — | — | Compliant |
| COLUMBUS UTILITIES WI1110038 | COLUMBUS | 5,173 | — | — | Compliant |
| MAYVILLE WATERWORKS WI1140057 | MAYVILLE | 5,112 | — | — | Compliant |
| RICHLAND CENTER WATERWORKS WI1530068 | RICHLAND CENTER | 5,100 | — | — | Compliant |
| EAST TROY WATERWORKS WI2650123 | EAST TROY | 5,054 | — | — | Compliant |
| WEST SALEM WATERWORKS WI6320334 | WEST SALEM | 5,045 | — | — | Compliant |
| NORTH FOND DU LAC WATERWORKS WI4200405 | NORTH FOND DU LAC | 5,014 | — | — | Compliant |
| SHAWANO LK SAN DIST 1 WI4590457 | SHAWANO | 4,950 | — | — | Compliant |
| UNION GROVE WATERWORKS WI2520200 | UNION GROVE | 4,900 | — | — | Compliant |
| SUAMICO WATERWORKS WI4051031 | SUAMICO | 4,697 | — | — | Compliant |
| CLINTONVILLE UTILITIES WI4690391 | CLINTONVILLE | 4,635 | — | — | Compliant |
| OCONTO WATERWORKS WI4430495 | OCONTO | 4,610 | — | — | Compliant |
| SHEBOYGAN TN WATERWORKS WI4600403 | SHEBOYGAN | 4,596 | — | — | Exceeds |
| DODGEVILLE WATERWORKS WI1250079 | DODGEVILLE | 4,583 | — | — | Compliant |
| MAUSTON WATERWORKS WI7290129 | MAUSTON | 4,456 | — | — | Compliant |
| BALDWIN WATERWORKS WI6560119 | BALDWIN | 4,440 | — | — | Compliant |
| VIROQUA WATERWORKS WI6630263 | VIROQUA | 4,362 | — | — | Compliant |
| ONEIDA #1 OR SITE #1 055295703 | ONEIDA | 4,322 | — | — | Compliant |
| MEDFORD WATERWORKS WI8610125 | MEDFORD | 4,318 | 4.1 | — | Exceeds |
| KEWASKUM WATERWORKS WI2670112 | KEWASKUM | 4,309 | 15 | — | Exceeds |
| SAUKVILLE WATERWORKS WI2460134 | SAUKVILLE | 4,268 | 4.2 | 31 | Exceeds |
| PRESCOTT WATERWORKS WI6480243 | Prescott | 4,258 | 9.9 | — | Exceeds |
| CHILTON WATERWORKS WI4080222 | CHILTON | 4,191 | — | — | Compliant |
| CROSS PLAINS WATERWORKS WI1130219 | CROSS PLAINS | 4,100 | — | — | Compliant |
| BLOOMFIELD, VILLAGE OF WI2651469 | PELL LAKE | 4,071 | — | — | Compliant |
| PULASKI WATERWORKS WI4050355 | PULASKI | 4,040 | — | — | Compliant |
| PRAIRIE DU SAC WATERWORKS WI1570100 | PRAIRIE DU SAC | 4,006 | — | — | Compliant |
| KESHENA 055295508 | KESHENA | 3,960 | — | — | Compliant |
| KIEL WATERWORKS WI4360427 | KIEL | 3,932 | — | — | Compliant |
| CABELAS - RICHFIELD WI2671753 | RICHFIELD | 3,931 | — | — | Compliant |
| YORKVILLE UTILITY DIST 1 WI2521735 | UNION GROVE | 3,900 | — | — | Compliant |
| LANCASTER WATERWORKS WI1220107 | LANCASTER | 3,868 | — | — | Compliant |
| MARSHALL WATERWORKS WI1130237 | MARSHALL | 3,862 | — | — | Compliant |
| WAUPUN CORRECTIONAL INST WI1140142 | MADISON | 3,706 | — | — | Compliant |
| HORICON WATERWORKS WI1140146 | HORICON | 3,682 | — | — | Compliant |
| BLOOMER WATERWORKS WI6090448 | BLOOMER | 3,680 | — | — | Compliant |
| OMRO WATERWORKS WI4710357 | OMRO | 3,629 | — | — | Compliant |
| COMBINED LOCKS WATERWORKS WI4450409 | COMBINED LOCKS | 3,609 | — | — | Compliant |
| BLACK RIVER FALLS WATERWORKS WI6270244 | Black River Falls | 3,608 | — | — | Compliant |
| SEYMOUR WATERWORKS WI4450337 | SEYMOUR | 3,601 | — | — | Compliant |
| WATERLOO WATERWORKS WI1280115 | WATERLOO | 3,520 | — | — | Compliant |
| SAUK CITY WATERWORKS WI1570105 | Sauk City | 3,518 | — | — | Compliant |
| STANLEY WATERWORKS WI6090462 | STANLEY | 3,500 | — | — | Compliant |
| BARRON LIGHT & WATER DEPT WI6030125 | BARRON | 3,423 | — | — | Compliant |
| PESHTIGO WATERWORKS WI4380442 | PESHTIGO | 3,420 | — | — | Compliant |
| ELLSWORTH WATERWORKS WI6480239 | ELLSWORTH | 3,304 | — | — | Compliant |
| BRILLION WATERWORKS WI4080221 | BRILLION | 3,262 | — | — | Compliant |
| TOMAHAWK WATERWORKS WI7350127 | Tomahawk | 3,180 | 21 | — | Exceeds |
| LAC DU FLAMBEAU 055295401 | LAC DU FLAMBEAU | 3,168 | — | — | Compliant |
| SOUTH-CENTRAL WATER SYSTEM 055295003 | BOWLER | 2,805 | — | — | Compliant |
| DENMARK WATERWORKS WI4050351 | DENMARK | 2,684 | — | — | Compliant |
| SCHOFIELD WATERWORKS WI7370162 | SCHOFIELD | 2,205 | 4.7 | — | Exceeds |
| CLINTON WATERWORKS WI1540114 | CLINTON | 2,119 | — | — | Compliant |
| SOMERS WATER UTILITY WI2301421 | SOMERS | 1,930 | — | — | Compliant |
| PALMYRA WATERWORKS WI1280112 | PALMYRA | 1,756 | — | 6.2 | Exceeds |