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.
Montana Tap Water Quality
236 cities · 789,715 people served · 1,366 EPA violations (last 5 years)
Cities Map (210 of 236 with coordinates)
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Pin locations from ZIP-code centroids · click a pin for details
All Cities in Montana
BILLINGS44 violations
F
MISSOULA43 violations
F
BOZEMAN5 violations
C
GREAT FALLS6 violations
D
KALISPELL22 violations
F
HELENA55 violations
F
BUTTE0 violations
A
BELGRADE3 violations
C
WHITEFISH0 violations
A
MILES CITY41 violations
F
HAVRE12 violations
F
WEST YELLOWSTONE12 violations
F
ANACONDA0 violations
A
MALMSTROM AIR FORCE BASE0 violations
A
COLUMBIA FALLS0 violations
A
BIGFORK0 violations
A
LIVINGSTON0 violations
A
GLENDIVE17 violations
F
LAUREL4 violations
C
EAST HELENA27 violations
F
HAMILTON0 violations
A
POLSON0 violations
A
LEWISTOWN122 violations
F
BIG SKY0 violations
A
LIBBY11 violations
F
DILLON7 violations
D
SIDNEY32 violations
F
DEER LODGE0 violations
A
CUT BANK0 violations
A
SHELBY0 violations
A
GLASGOW0 violations
A
CULBERTSON0 violations
A
LOLO0 violations
A
HARDIN0 violations
A
RONAN4 violations
C
ROUNDUP0 violations
A
CONRAD0 violations
A
EUREKA3 violations
C
STEVENSVILLE0 violations
A
TROY0 violations
A
OREM0 violations
A
MANHATTAN0 violations
A
COLSTRIP7 violations
D
FORSYTH0 violations
A
RED LODGE0 violations
A
THOMPSON FALLS0 violations
A
TOWNSEND0 violations
A
PABLO7 violations
D
BAKER0 violations
A
COLUMBUS0 violations
A
LAKESIDE0 violations
A
CHOTEAU0 violations
A
THREE FORKS0 violations
A
MALTA0 violations
A
HINGHAM0 violations
A
BIG TIMBER0 violations
A
PLAINS0 violations
A
PLENTYWOOD0 violations
A
BLACK EAGLE9 violations
D
LINCOLN0 violations
A
WEST GLACIER0 violations
A
ENNIS0 violations
A
FORT BENTON0 violations
A
SEELEY LAKE0 violations
A
CHESTER20 violations
F
VIRGINIA CITY15 violations
F
WHITEHALL97 violations
F
CLANCY0 violations
A
CHINOOK13 violations
F
BOULDER4 violations
C
PHILIPSBURG66 violations
F
FORT HARRISON0 violations
A
HARLOWTON0 violations
A
GARDINER0 violations
A
HUNGRY HORSE0 violations
A
DARBY3 violations
C
SUPERIOR0 violations
A
ABSAROKEE0 violations
A
WHITE SULPHUR SPRINGS0 violations
A
ASHLAND69 violations
F
SOMERS0 violations
A
SCOBEY0 violations
A
CIRCLE0 violations
A
FAIRVIEW0 violations
A
DALLAS0 violations
A
SUNBURST8 violations
D
BRADY15 violations
F
BALLANTINE46 violations
F
HARLEM96 violations
F
VALIER0 violations
A
BRIDGER0 violations
A
PINESDALE0 violations
A
ST IGNATIUS0 violations
A
POWER0 violations
A
BELT0 violations
A
WARM SPRINGS0 violations
A
GALLATIN GATEWAY0 violations
A
CASCADE0 violations
A
FAIRFIELD0 violations
A
HUNTLEY0 violations
A
FT. PECK0 violations
A
JOLIET0 violations
A
SHERIDAN0 violations
A
ALBERTON3 violations
C
BIG SANDY0 violations
A
HOT SPRINGS0 violations
A
MEDICINE LAKE0 violations
A
VAUGHN0 violations
A
WIBUAX3 violations
C
FORT SHAW0 violations
A
SAND COULEE4 violations
C
STANFORD0 violations
A
BEND3 violations
C
FROMBERG8 violations
D
VANCOUVER0 violations
A
LODGE GRASS0 violations
A
CHARLO0 violations
A
FROID0 violations
A
WORDEN0 violations
A
CORAM0 violations
A
BROADUS0 violations
A
COEUR D'ALENE0 violations
A
TWIN BRIDGES0 violations
A
EKALAKA0 violations
A
NOXON0 violations
A
RYEGATE12 violations
F
FRENCHTOWN0 violations
A
JORDAN0 violations
A
HIGHWOOD3 violations
C
GERALDINE3 violations
C
PORT ORCHARD0 violations
A
TROUT CREEK0 violations
A
BAINVILLE0 violations
A
MARTIN CITY0 violations
A
DUTTON4 violations
C
GALATA0 violations
A
BROADVIEW0 violations
A
STOCKETT0 violations
A
CLYDE PARK0 violations
A
ROBERTS0 violations
A
COOKE CITY0 violations
A
KODAK9 violations
D
NASHUA0 violations
A
KEVIN0 violations
A
LIMA0 violations
A
WINIFRED3 violations
C
HYSHAM30 violations
F
EAGLE0 violations
A
DENTON240 violations
F
WILSALL6 violations
D
HAILEY0 violations
A
HINSDALE2 violations
B
FORT PECK0 violations
A
NEIHART0 violations
A
CARTER2 violations
B
MARTINSDALE0 violations
A
ZORTMAN0 violations
A
HOUSTON0 violations
A
BELFRY0 violations
A
LOMA0 violations
A
BASIN3 violations
C
KNOXVILLE0 violations
A
SWEET GRASS3 violations
C
PARADISE0 violations
A
SAN DIEGO0 violations
A
WINNETT0 violations
A
MOORE0 violations
A
RICHEY0 violations
A
SACO0 violations
A
EMIGRANT0 violations
A
HUSON0 violations
A
WESTBY0 violations
A
MELSTONE0 violations
A
REXFORD0 violations
A
GRASS RANGE0 violations
A
HERON0 violations
A
MELVILLE0 violations
A
LAMBERT0 violations
A
GILDFORD0 violations
A
PLEVNA0 violations
A
JUDITH GAP0 violations
A
GEYSER0 violations
A
HOBSON0 violations
A
YELLOWTAIL0 violations
A
DODSON6 violations
D
THOIMPSON FALLS0 violations
A
CORVALLIS0 violations
A
OPHEIM4 violations
C
ROY0 violations
A
FORTINE0 violations
A
ULM0 violations
A
SUN RIVER0 violations
A
BYNUM0 violations
A
RAMSAY0 violations
A
OUTLOOK0 violations
A
LEDGER0 violations
A
PENDROY0 violations
A
RENTON5 violations
C
HERMOSA BEACH6 violations
D
CORPUS CHRISTI0 violations
A
HIGHLANDS RANCH0 violations
A
AUGUSTA0 violations
A
ST GEORGE0 violations
A
FLAXVILLE0 violations
A
MANHATTAN MT0 violations
A
ALDER0 violations
A
MUSSELSHELL0 violations
A
RUDYARD0 violations
A
RAPELJE0 violations
A
HAUGAN0 violations
A
ETHRIDGE0 violations
A
WOLF CREEK14 violations
F
FLORENCE0 violations
A
EL DORADO HILLS0 violations
A
LOGAN0 violations
A
ANTELOPE0 violations
A
JACKSON0 violations
A
ROLLINS0 violations
A
PORT ANGELES0 violations
A
BUENA PARK0 violations
A
CAMPBELL0 violations
A
GREYCLIFF0 violations
A
TWO DOT0 violations
A
TURNER36 violations
F
MERIDIAN0 violations
A
E HELENA0 violations
A
ST REGIS0 violations
A
BATTLE GROUND0 violations
A
LORING0 violations
A
BONNER0 violations
A
PRAY0 violations
A
BISMARCK6 violations
D
POTOMAC0 violations
A
DRUMMOND3 violations
C
WILMINGTON0 violations
A
SHEPHERD0 violations
A
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