Apr 15, 2026 · 7 min read
PFAS "Forever Chemicals" in US Drinking Water: 2026 Update
PFAS contamination affects an estimated 200 million Americans. Here's what the latest EPA enforcement means for your tap water.
Wisconsin Tap Water Quality
593 cities · 4,232,570 people served · 1,810 EPA violations (last 5 years)
Cities Map (250 of 593 with coordinates)
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Pin locations from ZIP-code centroids · click a pin for details
All Cities in Wisconsin
MILWAUKEE20 violations
F
MADISON21 violations
F
GREEN BAY8 violations
D
RACINE0 violations
A
KENOSHA28 violations
F
APPLETON0 violations
A
WAUKESHA421 violations
F
EAU CLAIRE0 violations
A
OSHKOSH0 violations
A
JANESVILLE1 violation
B
West Allis0 violations
A
NEENAH2 violations
B
LA CROSSE6 violations
D
SHEBOYGAN0 violations
A
Wauwatosa0 violations
A
WAUSAU2 violations
B
FOND DU LAC5 violations
C
DE PERE2 violations
B
BELOIT0 violations
A
BROOKFIELD6 violations
D
MANITOWOC0 violations
A
SUN PRAIRIE3 violations
C
WEST BEND1 violation
B
OAK CREEK1 violation
B
STEVENS POINT35 violations
F
NEW BERLIN0 violations
A
SUPERIOR17 violations
F
MENOMONEE FALLS0 violations
A
FITCHBURG0 violations
A
MIDDLETON8 violations
D
WATERTOWN12 violations
F
FRANKLIN0 violations
A
CALEDONIA1 violation
B
GRAND CHUTE0 violations
A
SOUTH MILWAUKEE0 violations
A
WISCONSIN RAPIDS1 violation
B
MENASHA0 violations
A
CHIPPEWA FALLS2 violations
B
GERMANTOWN2 violations
B
MARSHFIELD6 violations
D
Cudahy0 violations
A
HUDSON1 violation
B
KAUKAUNA0 violations
A
Onalaska0 violations
A
PEWAUKEE143 violations
F
ASHWAUBENON0 violations
A
OCONOMOWOC2 violations
B
MEQUON10 violations
D
BEAVER DAM0 violations
A
Menomonie0 violations
A
River Falls2 violations
B
WESTON0 violations
A
WAUNAKEE0 violations
A
HARTFORD0 violations
A
SHAWANO0 violations
A
BARABOO0 violations
A
Greendale0 violations
A
WHITEWATER0 violations
A
VERONA1 violation
B
Plover0 violations
A
SHOREWOOD0 violations
A
STOUGHTON0 violations
A
LAKE GENEVA0 violations
A
GLENDALE0 violations
A
PORT WASHINGTON0 violations
A
BROWN DEER0 violations
A
GRAFTON1 violation
B
FORT ATKINSON0 violations
A
OREGON2 violations
B
PLATTEVILLE0 violations
A
LITTLE CHUTE2 violations
B
CEDARBURG0 violations
A
Sussex1 violation
B
GREENVILLE0 violations
A
TWO RIVERS2 violations
B
PORTAGE1 violation
B
MONROE4 violations
C
BURLINGTON0 violations
A
PLEASANT PRAIRIE3 violations
C
MARINETTE0 violations
A
NEW RICHMOND1 violation
B
ELKHORN7 violations
D
DEFOREST2 violations
B
PLYMOUTH0 violations
A
Holmen2 violations
B
FORT MCCOY0 violations
A
Sparta4 violations
C
MUSKEGO1 violation
B
REEDSBURG0 violations
A
STURGEON BAY0 violations
A
MCFARLAND0 violations
A
MERRILL4 violations
C
Altoona1 violation
B
COTTAGE GROVE1 violation
B
HARTLAND0 violations
A
TOMAH5 violations
C
RICE LAKE0 violations
A
SHEBOYGAN FALLS2 violations
B
MONONA0 violations
A
DELAVAN0 violations
A
MUKWONAGO5 violations
C
RHINELANDER1 violation
B
WAUPUN0 violations
A
ASHLAND24 violations
F
JEFFERSON35 violations
F
JACKSON2 violations
B
Antigo19 violations
F
MOUNT HOREB0 violations
A
RIPON1 violation
B
KIMBERLY2 violations
B
NEW LONDON0 violations
A
KRONENWETTER2 violations
B
FOX POINT0 violations
A
PRAIRIE DU CHIEN1 violation
B
Black River Falls2 violations
B
EDGERTON1 violation
B
LAKE MILLS4 violations
C
WAUPACA3 violations
C
LODI22 violations
F
UNION GROVE3 violations
C
EVANSVILLE1 violation
B
MILTON1 violation
B
Slinger1 violation
B
BERLIN0 violations
A
MAYVILLE10 violations
D
NORTH FOND DU LAC2 violations
B
WEST SALEM0 violations
A
WATERFORD2 violations
B
RICHLAND CENTER6 violations
D
COLUMBUS4 violations
C
NEKOOSA0 violations
A
EAST TROY1 violation
B
WINDSOR0 violations
A
HOBART0 violations
A
SUAMICO0 violations
A
CLINTONVILLE2 violations
B
DODGEVILLE0 violations
A
OCONTO2 violations
B
PRAIRIE DU SAC3 violations
C
Mosinee1 violation
B
MAUSTON1 violation
B
BALDWIN0 violations
A
Prescott6 violations
D
MEDFORD0 violations
A
VIROQUA0 violations
A
SAUKVILLE0 violations
A
KEWASKUM0 violations
A
CHILTON2 violations
B
CROSS PLAINS0 violations
A
PELL LAKE3 violations
C
PULASKI0 violations
A
KIEL0 violations
A
LANCASTER0 violations
A
MARSHALL0 violations
A
WRIGHTSTOWN4 violations
C
Arcadia0 violations
A
HORICON3 violations
C
BLOOMER2 violations
B
Sauk City0 violations
A
OMRO0 violations
A
COMBINED LOCKS2 violations
B
SEYMOUR0 violations
A
WATERLOO0 violations
A
Wisconsin Dells127 violations
F
STANLEY0 violations
A
FARMINGTON HILLS4 violations
C
BARRON0 violations
A
PESHTIGO0 violations
A
SOMERSET1 violation
B
JOHNSON CREEK1 violation
B
ELLSWORTH1 violation
B
BRILLION0 violations
A
FREEDOM0 violations
A
BOSCOBEL0 violations
A
ALGOMA0 violations
A
BRODHEAD0 violations
A
Rothschild1 violation
B
LADYSMITH0 violations
A
Tomahawk1 violation
B
SHERWOOD3 violations
C
OOSTBURG0 violations
A
HORTONVILLE2 violations
B
NEW HOLSTEIN0 violations
A
PARK FALLS0 violations
A
AMERY1 violation
B
SPOONER0 violations
A
LAKE DELTON0 violations
A
OCONTO FALLS2 violations
B
KEWAUNEE4 violations
C
GENOA CITY0 violations
A
OSCEOLA1 violation
B
Hayward4 violations
C
LUXEMBURG0 violations
A
BELLEVILLE1 violation
B
LOMIRA0 violations
A
DENMARK2 violations
B
JUNEAU16 violations
F
MONDOVI2 violations
B
WILLIAMS BAY4 violations
C
Westby6 violations
D
DOUSMAN3 violations
C
NEW LISBON2 violations
B
POYNETTE3 violations
C
DEERFIELD0 violations
A
FENNIMORE0 violations
A
ABBOTSFORD1 violation
B
WINNECONNE48 violations
F
BELGIUM1 violation
B
MINERAL POINT5 violations
C
PARDEEVILLE0 violations
A
Minocqua1 violation
B
Neillsville0 violations
A
WALWORTH0 violations
A
NEW GLARUS1 violation
B
CUMBERLAND0 violations
A
WAUTOMA0 violations
A
WASHBURN2 violations
B
FREDONIA0 violations
A
COLFAX1 violation
B
KOHLER0 violations
A
DARLINGTON1 violation
B
CEDAR GROVE0 violations
A
SCHOFIELD0 violations
A
BUTLER0 violations
A
SPRING GREEN2 violations
B
CUBA CITY1 violation
B
Whitehall1 violation
B
CLINTON0 violations
A
NORTH PRAIRIE0 violations
A
ST. CROIX FALLS0 violations
A
REDGRANITE0 violations
A
CRANDON1 violation
B
EAGLE0 violations
A
CHETEK0 violations
A
SOMERS0 violations
A
FALL RIVER1 violation
B
NEW FRANKEN0 violations
A
TREMPEALEAU0 violations
A
HAMMOND0 violations
A
CAMERON2 violations
B
Roberts0 violations
A
Durand0 violations
A
Port Edwards0 violations
A
WEYAUWEGA0 violations
A
SPENCER2 violations
B
ADAMS0 violations
A
FONTANA2 violations
B
Colby0 violations
A
CAMPBELLSPORT0 violations
A
RANDOLPH32 violations
F
PALMYRA0 violations
A
MAZOMANIE0 violations
A
OSSEO0 violations
A
MARATHON CITY2 violations
B
GALESVILLE5 violations
C
Bangor0 violations
A
RANDOM LAKE0 violations
A
Stratford1 violation
B
CAMBRIDGE2 violations
B
THORP6 violations
D
BONDUEL0 violations
A
FOX LAKE0 violations
A
BRISTOL0 violations
A
GRANTSBURG0 violations
A
DARIEN0 violations
A
ELKHART LAKE0 violations
A
NIAGARA0 violations
A
Oxford0 violations
A
SHARON3 violations
C
EAGLE RIVER1 violation
B
CLEVELAND2 violations
B
BROOKLYN0 violations
A
DELAFIELD9 violations
D
HURLEY0 violations
A
INDEPENDENCE0 violations
A
BLACK EARTH1 violation
B
Edgar1 violation
B
ORFORDVILLE0 violations
A
Phillips1 violation
B
MUSCODA0 violations
A
AUGUSTA0 violations
A
SPRING VALLEY0 violations
A
OWEN14 violations
F
MISHICOT0 violations
A
CORNELL0 violations
A
Woodville0 violations
A
Hillsboro10 violations
D
MARKESAN0 violations
A
CADOTT0 violations
A
BLACK CREEK0 violations
A
ELROY0 violations
A
HAZEL GREEN12 violations
F
MONTELLO4 violations
C
Loyal0 violations
A
MANAWA0 violations
A
MARION0 violations
A
BLAIR2 violations
B
SAN FRANCISCO10 violations
D
Fall Creek1 violation
B
GILLETT0 violations
A
THERESA3 violations
C
BARNEVELD11 violations
F
FLORENCE0 violations
A
IOLA0 violations
A
FREDERIC0 violations
A
KING0 violations
A
LAONA9 violations
D
SHULLSBURG0 violations
A
MONTICELLO1 violation
B
WITTENBERG0 violations
A
REEDSVILLE2 violations
B
GREEN LAKE3 violations
C
HILBERT0 violations
A
PRINCETON2 violations
B
DICKEYVILLE6 violations
D
LUCK0 violations
A
CASHTON0 violations
A
AMHERST1 violation
B
DANE0 violations
A
POTOSI4 violations
C
GLENWOOD CITY0 violations
A
Strum0 violations
A
ELK MOUND0 violations
A
RIO1 violation
B
GREENWOOD0 violations
A
TURTLE LAKE0 violations
A
HUSTISFORD0 violations
A
Clear Lake0 violations
A
OAKFIELD0 violations
A
BOYCEVILLE1 violation
B
Camp Douglas0 violations
A
Balsam Lake0 violations
A
CRIVITZ0 violations
A
ATHENS0 violations
A
PLAINFIELD0 violations
A
ALBANY0 violations
A
SISTER BAY0 violations
A
BELMONT2 violations
B
BARRINGTON0 violations
A
BENTON0 violations
A
VALDERS0 violations
A
NORTHBROOK3 violations
C
BLUE MOUNDS0 violations
A
SHELL LAKE2 violations
B
Rib Lake4 violations
C
SALEM0 violations
A
FRIENDSHIP0 violations
A
SIREN0 violations
A
IRON RIDGE0 violations
A
DRESSER0 violations
A
SHIOCTON0 violations
A
MILLTOWN0 violations
A
CENTURIA0 violations
A
LONE ROCK0 violations
A
MONTREAL2 violations
B
ARENA0 violations
A
BRANDON0 violations
A
ALLENTON0 violations
A
Necedah1 violation
B
HIGHLAND0 violations
A
Dorchester0 violations
A
BIRNAMWOOD0 violations
A
ARLINGTON1 violation
B
ARGYLE4 violations
C
PLAIN4 violations
C
CASSVILLE1 violation
B
Pepin14 violations
F
FOOTVILLE2 violations
B
THREE LAKES8 violations
D
BLANCHARDVILLE0 violations
A
ELM GROVE0 violations
A
PITTSVILLE0 violations
A
ELMWOOD0 violations
A
Stoddard2 violations
B
Alma0 violations
A
WYOCENA0 violations
A
Cambria0 violations
A
CLAYTOON1 violation
B
COON VALLEY1 violation
B
Mercer0 violations
A
WONEWOC0 violations
A
WHITELAW2 violations
B
WABENO0 violations
A
GLIDDEN0 violations
A
CEDAREDGE6 violations
D
TIGERTON3 violations
C
MELLEN0 violations
A
COLEMAN0 violations
A
CASCADE0 violations
A
REESEVILLE3 violations
C
MONTFORT3 violations
C
LA FARGE0 violations
A
WAUZEKA0 violations
A
ST NAZIANZ0 violations
A
ALMENA0 violations
A
RIDGEWAY8 violations
D
BLOOMINGTON0 violations
A
IXONIA0 violations
A
Viola0 violations
A
LIVINGSTON0 violations
A
PRENTICE0 violations
A
SURING2 violations
B
ETTRICK0 violations
A
Norwalk0 violations
A
WEBSTER0 violations
A
GREENLEAF0 violations
A
STOCKBRIDGE2 violations
B
Rockland2 violations
B
Eleva2 violations
B
BROWSVILLE2 violations
B
BRUCE0 violations
A
IRON RIVER2 violations
B
SOLDIERS GROVE0 violations
A
MERRILLAN1 violation
B
NORTH FREEDOM0 violations
A
WAUSAUKEE2 violations
B
LENA3 violations
C
SOUTH WAYNE0 violations
A
Land O Lakes5 violations
C
STETSONVILLE1 violation
B
MINONG0 violations
A
KIELER2 violations
B
Ontario2 violations
B
STAR PRAIRIE0 violations
A
Hatley0 violations
A
Phelps0 violations
A
BAY CITY0 violations
A
NEW AUBURN0 violations
A
MERRIMAC1 violation
B
LINDEN0 violations
A
AVOCA3 violations
C
WARRENS0 violations
A
BOYD0 violations
A
GRESHAM3 violations
C
MENOMONIE FALLS0 violations
A
MELROSE0 violations
A
ADELL2 violations
B
WITHEE0 violations
A
WALDO0 violations
A
DRUMMOND0 violations
A
TAYLOR0 violations
A
ST CLOUD0 violations
A
HIXTON2 violations
B
VESPER0 violations
A
WILTON4 violations
C
GAYS MILLS5 violations
C
BAYFIELD0 violations
A
ALMA CENTER1 violation
B
FOREST JUNCTION3 violations
C
Knapp2 violations
B
MT CALVARY0 violations
A
Lyndon Station0 violations
A
WALES5 violations
C
GLENBEULAH1 violation
B
LOS ANGELES2 violations
B
Kendall8 violations
D
COBB2 violations
B
COLOMA0 violations
A
FAIRCHILD5 violations
C
COCHRANE2 violations
B
OREM5 violations
C
MATTOON4 violations
C
NASHOTAH0 violations
A
Fountain City0 violations
A
BIRCHWOOD4 violations
C
SEXTONVILLE0 violations
A
BLUE RIVER0 violations
A
CLYMAN3 violations
C
HANCOCK5 violations
C
BEAR CREEK0 violations
A
Junction City0 violations
A
PIGEON FALLS0 violations
A
Port Wing0 violations
A
Elcho1 violation
B
HINSDALE0 violations
A
MINNEAPOLIS4 violations
C
SANDY0 violations
A
READSTOWN4 violations
C
BAYSIDE0 violations
A
THIENSVILLE0 violations
A
LAS VEGAS0 violations
A
NELSON0 violations
A
GILMAN0 violations
A
CHICAGO15 violations
F
DALLAS1 violation
B
LA VALLE7 violations
D
FAIRWATER0 violations
A
BOWLER0 violations
A
MARIBEL0 violations
A
BAGLEY0 violations
A
OAKDALE2 violations
B
WHITE LAKE0 violations
A
CAZENOVIA1 violation
B
GOODMAN6 violations
D
TAMPA0 violations
A
GRANTON3 violations
C
POUND5 violations
C
EMBARRASS0 violations
A
Curtiss0 violations
A
FRIESLAND0 violations
A
Hales Corners0 violations
A
WINTER3 violations
C
EASTMAN2 violations
B
LOWELL1 violation
B
KENNAN2 violations
B
WEST COVINA0 violations
A
WHEELER1 violation
B
IRMA0 violations
A
Chaseburg0 violations
A
KELLNERSVILLE5 violations
C
FIFIELD0 violations
A
LOGANVILLE0 violations
A
ROCK SPRINGS0 violations
A
REWEY0 violations
A
HAUGEN2 violations
B
DANBURY1 violation
B
BUTTERNUT20 violations
F
HOLLANDALE4 violations
C
Milladore0 violations
A
ARBOR VITAE0 violations
A
NICHOLS0 violations
A
MINDORO2 violations
B
EGG HARBOR0 violations
A
SHELDON10 violations
D
GENOA6 violations
D
TWIN LAKES0 violations
A
BROWNTOWN4 violations
C
LAVALLE1 violation
B
SENECA0 violations
A
Downsville0 violations
A
KANSASVILLE0 violations
A
BOCA RATON4 violations
C
RADISSON1 violation
B
WEYERHAEUSER1 violation
B
MT HOREB0 violations
A
WESTBORO4 violations
C
UNION CENTER0 violations
A
GRATIOT4 violations
C
ORLANDO0 violations
A
Sturtevant0 violations
A
SINSINAWA0 violations
A
IRON BELT6 violations
D
MT STERLING12 violations
F
SOUTH RANGE2 violations
B
EXELAND0 violations
A
PENCE4 violations
C
MOUNT HOPE2 violations
B
STONE LAKE0 violations
A
LANNON0 violations
A
Wilson2 violations
B
Hustler0 violations
A
TROY CENTER0 violations
A
PATCH GROVE0 violations
A
DIAMONDHEAD0 violations
A
STITZER6 violations
D
MIAMI BEACH3 violations
C
Lake Tomahawk0 violations
A
BLOOMFIELD HILLS0 violations
A
MT PLEASANT0 violations
A
MAPLEWOOD0 violations
A
Plum City0 violations
A
DODGE14 violations
F
Hawkins0 violations
A
Maiden Rock2 violations
B
EDMUND0 violations
A
TONY0 violations
A
SANTA MONICA0 violations
A
LACROSSE1 violation
B
GLEN FLORA12 violations
F
COSTA MESA5 violations
C
CHAMPLIN0 violations
A
DUNBAR0 violations
A
CHARLES TOWN0 violations
A
LINCONWOOD0 violations
A
IRVINE0 violations
A
COLGATE0 violations
A
CEDAR RAPIDS0 violations
A
YUBA0 violations
A
MIAMI0 violations
A
ZION1 violation
B
WILD ROSE0 violations
A
NYACK0 violations
A
SEVIERVILLE0 violations
A
LAKE VILLA0 violations
A
HIGHBRIDGE0 violations
A
WESTFIELD0 violations
A
BOULDER0 violations
A
ABRAMS0 violations
A
HAGER CITY0 violations
A
HUBERTUS0 violations
A
HAWTHORN WOODS4 violations
C
LIBERTYVILLE0 violations
A
PADDOCK LAKE0 violations
A
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