States / Montana / Drinking Water
Drinking Water Systems in Montana
803 community water systems serving about 790,601 people. 190 have a health-based violation on record since 2015, 11 of them unresolved.
SystemHealth-based violations (2015+)
EAST VIEW ACRES WATER SYSTEM · MISSOULA · 25 served · groundwater12 (6 unresolved)
RICHLAND CO VALLEY VIEW WUA · SIDNEY · 85 served · groundwater37 (4 unresolved)
HARLEM CITY OF · HARLEM · 820 served · surface water202 (2 unresolved)
TURNER COLONY · TURNER · 50 served · groundwater78 (2 unresolved)
WORDEN BALLANTINE YELLOWSTONE · BALLANTINE · 800 served · groundwater under surface influence33 (2 unresolved)
FISHERMANS VILLAGE SUBDIVISION · WEST YELLOWSTONE · 25 served · groundwater15 (2 unresolved)
HINSDALE WATER DEPARTMENT · HINSDALE · 250 served · groundwater9 (2 unresolved)
SOUTH CHESTER WATER DIST · CHESTER · 55 served · purchased surface water9 (2 unresolved)
MT ELLIS ACADEMY · BOZEMAN · 106 served · groundwater5 (2 unresolved)
SKYVIEW PARK · KALISPELL · 55 served · purchased groundwater2 (2 unresolved)
MOUNTAIN SHADOWS ESTATES STEVENSVILLE · STEVENSVILLE · 55 served · groundwater2 (2 unresolved)
DENTON TOWN OF · DENTON · 255 served · surface water304
WHITEHALL TOWN OF · WHITEHALL · 1,500 served · groundwater255
ST LABRE INDIAN SCHOOL · ASHLAND · 650 served · groundwater202
BEAVERHEAD JACKSON WATER AND SEWER DIST · JACKSON · 58 served · groundwater193
KING RANCH COLONY · LEWISTOWN · 56 served · groundwater156
CLARKS LOOKOUT · DILLON · 62 served · groundwater103
PHILIPSBURG TOWN OF · PHILIPSBURG · 1,360 served · surface water91
RIVERVIEW COLONY · CHESTER · 130 served · purchased surface water83
NCMRWA TIBER SERVICE AREA · HAVRE · 200 served · purchased surface water74
OILMONT COUNTY WATER DISTRICT · SHELBY · 300 served · groundwater69
BLUE CLOUD SUBDIVISION · HELENA · 60 served · groundwater64
TIBER COUNTY WATER DISTRICT · CONRAD · 750 served · surface water55
ARROW CREEK TRAILER COURT · BILLINGS · 75 served · groundwater48
BLUE SKY HEIGHTS WUA CLANCY · CLANCY · 250 served · groundwater47
CRYSTAL SPRINGS WATER SYSTEM · BILLINGS · 225 served · groundwater44
OPHEIM TOWN OF · OPHEIM · 111 served · purchased surface water44
CINNABAR THE · CORWIN SPRINGS · 175 served · groundwater41
HYSHAM TOWN OF · HYSHAM · 262 served · surface water38
RIVERS EDGE MOBILE PARK LIBBY · LIBBY · 60 served · groundwater36
ELK CREEK COLONY · AUGUSTA · 84 served · groundwater35
TWIN HILLS COLONY INC · CARTER · 78 served · purchased surface water34
LIBBY CITY OF · LIBBY · 4,892 served · surface water31
BEE HIVE HOMES MSLA · MISSOULA · 106 served · groundwater28
PINESDALE TOWN OF · PINESDALE · 800 served · surface water27
PALISADES APARTMENTS · MILES CITY · 50 served · groundwater27
FLAXVILLE TOWN OF · FLAXVILLE · 82 served · purchased surface water26
LEWISTOWN CITY OF · LEWISTOWN · 5,923 served · groundwater24
TAMARACK COURT · MISSOULA · 75 served · groundwater23
SOUTH WIND WATER AND SEWER DISTRICT · GREAT FALLS · 200 served · groundwater22
FORT PECK RURAL COUNTY WATER DISTRICT · FORT PECK · 663 served · purchased surface water21
DRY PRAIRIE RURAL WATER AUTHORITY · CULBERTSON · 3,005 served · purchased surface water20
WOODS BAY WATER AND SEWER DISTRICT · BIGFORK · 685 served · groundwater20
ANTELOPE COUNTY WATER AND SEWER · ANTELOPE · 59 served · purchased surface water20
BIRCH CREEK COLONY · VALIER · 120 served · groundwater19
BROADWATER ESTATES HOA · HELENA · 40 served · groundwater19
PINNACLE ESTATES OF GLENDIVE · GLENDIVE · 50 served · groundwater17
COUNTRYSIDE COURT MISSOULA · MISSOULA · 37 served · groundwater17
GREAT FALLS CITY OF · GREAT FALLS · 60,000 served · surface water16
DUCK CREEK MOBILE HOME PARK · BILLINGS · 70 served · groundwater16
BIGFORK COUNTY WATER AND SEWER · BIGFORK · 6,100 served · groundwater15
VIRGINIA CITY WATER DEPT · VIRGINIA CITY · 1,500 served · groundwater15
MILES CITY CITY OF · MILES CITY · 9,565 served · surface water14
WILSALL WATER DISTRICT · WILSALL · 250 served · groundwater under surface influence14
HIGH QUALITY H2O · MISSOULA · 200 served · groundwater14
MILFORD COLONY INC · WOLF CREEK · 67 served · groundwater14
PINE CREST TR PK · LIVINGSTON · 54 served · groundwater14
CHINOOK CITY OF · CHINOOK · 1,300 served · surface water13
BLACK EAGLE CASCADE COUNTY WATER SEWER · BLACK EAGLE · 1,233 served · purchased surface water13
RYANS LOT · MISSOULA · 34 served · groundwater13
HAVRE CITY OF · HAVRE · 9,921 served · surface water12
HILL COUNTY WATER DISTRICTS · HAVRE · 1,720 served · groundwater12
MEDICINE LAKE TOWN OF · MEDICINE LAKE · 600 served · purchased surface water12
WIBAUX TOWN OF · WIBAUX · 550 served · groundwater12
HIDDEN LAKE YELLOWSTONE COUNTY W AND S D · BILLINGS · 350 served · groundwater12
RYEGATE TOWN OF · RYEGATE · 270 served · groundwater12
GODFREY CANYON ESTATES · MANHATTAN · 100 served · groundwater12
ST IGNATIUS TOWN OF · ST IGNATIUS · 700 served · groundwater11
GOODAN KEIL CO WATER DIST · MISSOULA · 207 served · groundwater11
LAMBERT SEWER AND WATER ASSN · LAMBERT · 150 served · groundwater11
DODSON TOWN OF · DODSON · 120 served · groundwater11
SPRING MEADOWS COUNTY WATER DISTRICT · MISSOULA · 162 served · groundwater10
WEST VALLEY PINES HOA INC · KALISPELL · 130 served · groundwater10
LEWIS AND CLARK TRAILER COURT · MISSOULA · 110 served · groundwater10
SOUTH EIGHTY WATER · SOMERS · 63 served · groundwater10
COLUMBIA RANGE HOA · KALISPELL · 47 served · groundwater10
HELENA WATER SYSTEM · HELENA · 32,091 served · surface water9
BELGRADE CITY OF · BELGRADE · 10,460 served · groundwater9
FROID TOWN OF · FROID · 450 served · purchased surface water9
BUSHARD WATER COMPANY · GREAT FALLS · 425 served · purchased surface water9
NASHUA TOWN OF · NASHUA · 300 served · purchased surface water9
GOLDEN ESTATES TRAILER COURT · HELENA · 225 served · groundwater9
WESTBY TOWN OF · WESTBY · 172 served · purchased surface water9
FROMBERG TOWN OF · FROMBERG · 498 served · groundwater8
HOLMBERG VILLAGE ESTATES · HELENA · 225 served · groundwater8
SAND COULEE WATER USERS DISTRICT · SAND COULEE · 180 served · groundwater8
SUNNY MEADOWS WATER AND SEWER DIST · MISSOULA · 135 served · groundwater8
HILDRETH SUBDIVISION NO 3 · DILLON · 128 served · groundwater8
COLSTRIP CITY OF · COLSTRIP · 2,350 served · surface water7
PABLO LAKE COUNTY WATER AND SEWER DIST · PABLO · 2,175 served · groundwater7
MONTANA STATE PRISON · DEER LODGE · 2,100 served · groundwater7
SKYVIEW WATER AND SEWER UTILITY · HELENA · 400 served · groundwater7
LOWER PIONEER MOUNTAIN WATER SYSTEM · BIG SKY · 350 served · groundwater7
HIDDEN LAKE COLONY · CUT BANK · 80 served · groundwater7
MOUNT PLEASANT ESTATES · SIDNEY · 45 served · groundwater7
AP KOOKOOSINT · KALISPELL · 40 served · groundwater7
MALMSTROM AIR FORCE BASE · GREAT FALLS · 8,850 served · purchased surface water6
GERALDINE TOWN OF · GERALDINE · 260 served · groundwater6
SWEETGRASS WATER USERS ASSN · SWEETGRASS · 100 served · purchased surface water6
CAMROSE COLONY · LEDGER · 95 served · purchased surface water6
ROCKPORT COLONY · PENDROY · 92 served · groundwater6
DEVON WATER INC · SHELBY · 75 served · purchased groundwater6
SKYLINE TR CT AND RV PARK · DILLON · 75 served · groundwater6
RAINBOW ESTATES · GLENDIVE · 30 served · groundwater6
VALLEY GROVE SUBDIVISION · BOZEMAN · 825 served · groundwater5
PTARMIGAN VILLAGE INC · WHITEFISH · 600 served · groundwater5
ROUND BUTTE WATER COMPANY · RONAN · 400 served · groundwater5
JETTE MEADOWS LAKE CO W AND S DIST · POLSON · 375 served · groundwater5
DRY REDWATER REGIONAL WATER AUTHORITY · SIDNEY · 365 served · purchased groundwater5
NOXON WATER DISTRICT · NOXON · 330 served · groundwater5
RIDGEWOOD TERRACE MHP · KALISPELL · 280 served · purchased groundwater5
ROCKY MOUNTAIN HI RV PARK · KALISPELL · 275 served · groundwater5
FLATHEAD COUNTY WATER DIST 101 · COLUMBIA FALLS · 210 served · groundwater5
EAST GATE WORK CAMP · CORWIN SPRINGS · 208 served · groundwater5
WILDERNESS PLATEAU WATER AND SEWER DIST · TROY · 208 served · groundwater5
HAPPY VALLEY WATER DIST B KSPL · WHITEFISH · 207 served · groundwater5
BELFRY CARBON CO WATER AND SEWER DIST · BELFRY · 205 served · groundwater5
PHILLIPS COUNTY ZORTMAN WATER AND SEWER · ZORTMAN · 169 served · groundwater5
BRADY COUNTY WATER SEWER DISTRICT · BRADY · 144 served · purchased surface water5
MOBILE CITY HOME PARK NO 1 · HELENA · 100 served · groundwater5
STANS GARDEN · BELGRADE · 100 served · purchased groundwater5
I 94 MOBILE HOME PARK · GLENDIVE · 90 served · groundwater5
GILDFORD COLONY · GILDFORD · 70 served · groundwater5
THOMSON MOBILE HOME PARK · BELGRADE · 65 served · groundwater5
OVERLOOK SUBDIVISION · POLSON · 49 served · groundwater5
SKY RANCH WATER ASSOCIATION · KALISPELL · 45 served · groundwater5
POSTS TRAILER COURT · LIBBY · 45 served · groundwater5
HILLSIDE HOMES · LAKESIDE · 35 served · groundwater5
HARDIN SUBDIVISION · BOZEMAN · 28 served · groundwater5
LAUREL MUNICIPAL WATER SYSTEM · LAUREL · 6,339 served · surface water4
BOULDER CITY OF · BOULDER · 1,400 served · groundwater4
ANDESITE RIDGE WATER SYSTEM · BIG SKY · 450 served · purchased groundwater4
DUTTON TOWN OF · DUTTON · 338 served · groundwater4
GRANITE PARK WATER ASSOCIATION · BILLINGS · 250 served · groundwater4
STOCKETT WATER AND SEWER DIST · STOCKETT · 210 served · groundwater4
HIDDEN VALLEY OWNER LLC · BOZEMAN · 200 served · groundwater4
STILL RIVER ESTATES SUBDIVISION · BILLINGS · 188 served · groundwater4
ELK MEADOWS RANCHETTES · FRENCHTOWN · 175 served · groundwater4
KINGSBURY COLONY · VALIER · 120 served · groundwater4
WOODSIDE PARK COUNTY WATER AND SEWER DIS · THOMPSON FALLS · 115 served · groundwater4
PLEASANT HILL ESTATES HOA · KALISPELL · 90 served · groundwater4
MILLER COLONY · CHOTEAU · 84 served · groundwater4
SOUTH FORESTVALE HOA · HELENA · 82 served · groundwater4
MISSION MOUNTAIN VIEW HOA · RONAN · 80 served · groundwater4
RIVER ACRES INC · MISSOULA · 78 served · purchased groundwater4
HIGH COUNTRY PARK · PARADISE · 76 served · groundwater4
WESTERN MOBILE VILLAGE DILLON · DILLON · 75 served · groundwater4
KING RANCH SUBDIVISION · FRENCHTOWN · 70 served · groundwater4
SAWTOOTH VILLA · HAMILTON · 70 served · groundwater4
RAPELJE WATER DISTRICT · RAPELJE · 70 served · groundwater4
MISSOULA VILLAGE WEST TR CT · MISSOULA · 68 served · groundwater4
PANORAMIC MOUNTAIN RIVER HEIGHTS W DIST · KALISPELL · 65 served · groundwater4
FRENCHTOWN VALLEY VIEW TR CT · FRENCHTOWN · 50 served · groundwater4
COUNTRY COURT GALLATIN · BOZEMAN · 30 served · groundwater4
SWAN RIDGE HOA · KALISPELL · 28 served · groundwater4
WEST YELLOWSTONE TOWN OF · WEST YELLOWSTONE · 9,899 served · groundwater3
EAST HELENA CITY OF · HELENA · 2,114 served · groundwater3
THREE FORKS CITY OF · THREE FORKS · 1,900 served · groundwater3
BAKER CITY OF · BAKER · 1,858 served · groundwater3
DARBY TOWN OF · DARBY · 850 served · groundwater3
ESTATES AT YELLOWSTONE LLC · BILLINGS · 800 served · groundwater3
JEFFERSON HILLS WUA · HELENA · 780 served · groundwater3
TEN MILE AND PLEASANT VALLEY WUA · HELENA · 750 served · groundwater3
HOMESTEAD ACRES COUNTY WATER AND SEWER · BLACK EAGLE · 500 served · groundwater3
MISSOULA KOA & EL MAR TLR VILLAGE · MISSOULA · 499 served · groundwater3
ALBERTON TOWN OF · ALBERTON · 495 served · groundwater3
BAXTER CREEK NO 2 HOA · BOZEMAN · 450 served · groundwater3
ASHLAND WATER AND SEWER DIST · ASHLAND · 400 served · groundwater3
WINIFRED TOWN OF · WINIFRED · 274 served · groundwater3
HILLTOP TERRACE SUBDIVISION · KALISPELL · 230 served · groundwater3
RYAN DAM WATER SYSTEM · GREAT FALLS · 230 served · groundwater3
HUNTLEY YELLOWSTONE CO WATER AND SEWER · HUNTLEY · 230 served · groundwater3
GLACIER POINT HO AND WUA · HELENA · 210 served · groundwater3
BASIN COUNTY WATER AND SEWER DIST · BASIN · 200 served · groundwater3
FOX HILL ESTATES · KALISPELL · 163 served · groundwater3
PINEWOOD VILLAGE · LIBBY · 160 served · groundwater3
NORTHWOODS WATER SYSTEM COOP INC · WHITEFISH · 135 served · groundwater3
GOLDEN EAGLE WATER USERS ASSN · BILLINGS · 125 served · groundwater3
WETTINGTON WATER DISTRICT INC · KALISPELL · 119 served · groundwater3
BIG BEND RANCH SUBDIVISION · GREAT FALLS · 100 served · groundwater3
WHISPERING TREES MOBILE PARK · GLENDIVE · 100 served · groundwater3
PLEASANT VIEW HOMESITES W AND S DISTRICT · KALISPELL · 85 served · groundwater3
SPRING TREE RIDGE · GREAT FALLS · 80 served · groundwater3
SOUTH CHOUTEAU COUNTY WATER DIST · HIGHWOOD · 80 served · groundwater3
MCDONALD TRAILER CT · EAST HELENA · 75 served · groundwater3
CARPENTER LAKE HOA · EUREKA · 65 served · groundwater3
GREENWOOD TRAILER COURT · MISSOULA · 53 served · groundwater3
HOME 40 PUBLIC WATER SUPPLY · BOZEMAN · 45 served · groundwater under surface influence3
BAHNY BRAE SUBDIVISION · EAST HELENA · 35 served · groundwater3
CARTER CHOUTEAU CO WATER DIST · CARTER · 150 served · surface water2
BILLINGS CITY OF · BILLINGS · 114,000 served · surface waternone on record
MISSOULA WATER · MISSOULA · 68,200 served · groundwaternone on record
BOZEMAN CITY OF · BOZEMAN · 56,000 served · surface waternone on record
BUTTE SILVERBOW WATER DEPT · BUTTE · 33,000 served · surface waternone on record
KALISPELL PUBLIC WORKS · KALISPELL · 25,000 served · groundwaternone on record
BILLINGS HEIGHTS CO WATER DIST OF · BILLINGS · 12,000 served · purchased surface waternone on record
WHITEFISH CITY OF · WHITEFISH · 10,418 served · surface waternone on record
FLATHEAD COUNTY WATER AND SEWER · KALISPELL · 7,775 served · groundwaternone on record
LIVINGSTON CITY OF · LIVINGSTON · 7,500 served · groundwaternone on record
ANACONDA WATER DEPARTMENT · ANACONDA · 6,750 served · groundwaternone on record
LOCKWOOD WATER AND SEWER DISTRICT · BILLINGS · 5,900 served · surface waternone on record
HAMILTON CITY OF · HAMILTON · 5,660 served · groundwaternone on record
POLSON CITY OF · POLSON · 5,300 served · groundwaternone on record
SIDNEY CITY OF · SIDNEY · 5,000 served · groundwaternone on record
GLENDIVE CITY OF · GLENDIVE · 4,873 served · surface waternone on record
COLUMBIA FALLS CITY OF · COLUMBIA FALLS · 4,450 served · groundwaternone on record
NORTH STAR ZOOT WATER · BOZEMAN · 4,323 served · groundwaternone on record
DILLON CITY OF · DILLON · 4,300 served · groundwaternone on record
RIVER ROCK COUNTY WATER AND SEWER DIST · BELGRADE · 4,200 served · groundwaternone on record
BIG SKY COUNTY WATER AND SEWER DIST 363 · BIG SKY · 4,132 served · groundwaternone on record
SHELBY CITY OF · SHELBY · 3,970 served · groundwaternone on record
HARDIN CITY OF · HARDIN · 3,500 served · surface waternone on record
LOLO WATER AND SEWER DIST · LOLO · 3,315 served · groundwaternone on record
GLASGOW CITY OF · GLASGOW · 3,253 served · surface waternone on record
CUT BANK CITY OF · CUT BANK · 3,105 served · surface waternone on record
DEER LODGE CITY OF · DEER LODGE · 2,900 served · groundwaternone on record
CONRAD WATER DEPT · CONRAD · 2,500 served · surface waternone on record
RONAN CITY OF · RONAN · 2,483 served · surface waternone on record
BIG MOUNTAIN WATER COMPANY · WHITEFISH · 2,435 served · groundwaternone on record
RAE WATER AND SEWER DIST 313 · BOZEMAN · 2,325 served · groundwaternone on record
FORSYTH CITY OF · FORSYTH · 2,260 served · surface waternone on record
TROY CITY OF · TROY · 2,100 served · groundwaternone on record
STEVENSVILLE TOWN OF · STEVENSVILLE · 2,090 served · groundwaternone on record
RED LODGE WATER DEPT · RED LODGE · 2,000 served · groundwaternone on record
EASTGATE VILLAGE SEWER AND WATER · EAST HELENA · 2,000 served · groundwaternone on record
TOWNSEND CITY OF · TOWNSEND · 2,000 served · groundwaternone on record
EUREKA TOWN OF · EUREKA · 1,995 served · surface waternone on record
FAIRMONT HOT SPRINGS RESORT · ANACONDA · 1,965 served · groundwaternone on record
THOMPSON FALLS CITY OF · THOMPSON FALLS · 1,950 served · groundwaternone on record
COLUMBUS TOWN OF · COLUMBUS · 1,900 served · groundwaternone on record
ROUNDUP WATER DEPARTMENT · ROUNDUP · 1,900 served · groundwaternone on record
MALTA CITY OF · MALTA · 1,800 served · groundwaternone on record
MANHATTAN TOWN OF · MANHATTAN · 1,800 served · groundwaternone on record
SUN PRAIRIE VILLAGE COUNTY · GREAT FALLS · 1,800 served · groundwaternone on record
PLAINS TOWN OF · PLAINS · 1,700 served · groundwaternone on record
PLENTYWOOD WATER DEPARTMENT · PLENTYWOOD · 1,700 served · purchased surface waternone on record
CHOTEAU CITY OF · CHOTEAU · 1,691 served · groundwaternone on record
BIG TIMBER CITY OF · BIG TIMBER · 1,650 served · surface waternone on record
SEELEY LAKE WATER DISTRICT · SEELEY LAKE · 1,575 served · surface waternone on record
FORT BENTON CITY OF · FORT BENTON · 1,500 served · groundwaternone on record
ENNIS TOWN OF · ENNIS · 1,400 served · groundwaternone on record
EL MAR ESTATES MSLA CO WATER · FRENCHTOWN · 1,350 served · groundwaternone on record
VA MEDICAL CENTER HELENA · FORT HARRISON · 1,275 served · purchased surface waternone on record
LAKESIDE WATER SYSTEM · LAKESIDE · 1,225 served · groundwaternone on record
FOREST PARK WATER RSID 24 · GLENDIVE · 1,200 served · groundwaternone on record
HELENA LEISURE LLC · HELENA · 1,200 served · groundwaternone on record
HUNGRY HORSE CO WATER AND SEWER DISTRICT · HUNGRY HORSE · 1,135 served · groundwaternone on record
SUPERIOR TOWN OF · SUPERIOR · 1,100 served · groundwaternone on record
CMRWA MUSSELSHELL JUDITH RURAL WATER SYS · HARLOWTON · 1,100 served · groundwaternone on record
ABSAROKEE WATER AND SEWER DIST · ABSAROKEE · 1,100 served · groundwaternone on record
HARLOWTON CITY OF · HARLOWTON · 1,050 served · purchased groundwaternone on record
ST MARY HEADQUARTERS AND CG · WEST GLACIER · 1,030 served · groundwaternone on record
SCOBEY CITY OF · SCOBEY · 1,026 served · purchased surface waternone on record
PRAIRIE WATER COMPANY · GREAT FALLS · 1,000 served · purchased surface waternone on record
WHITE SULPHUR SPRINGS CITY OF · WHITE SULPHUR SPRINGS · 1,000 served · surface waternone on record
FAIRVIEW TOWN OF · FAIRVIEW · 1,000 served · groundwaternone on record
MEADOW LAKE CO WATER AND SEWER DISTRICT · COLUMBIA FALLS · 950 served · groundwaternone on record
WESTVIEW MOBILE HOME PARK · MISSOULA · 947 served · groundwaternone on record
PIONEER WATER SERVICE · BILLINGS · 900 served · purchased surface waternone on record
CHESTER TOWN OF · CHESTER · 870 served · surface waternone on record
PHANTOM HILLS WATER SYSTEM · MISSOULA · 810 served · groundwaternone on record
GOLDEN MEADOWS SUBDIVISION · BILLINGS · 772 served · purchased surface waternone on record
SOMERS CO WATER AND SEWER DIST · SOMERS · 765 served · groundwaternone on record
FISHER WATER SERVICE · BILLINGS · 750 served · purchased surface waternone on record
BRIDGER TOWN OF · BRIDGER · 750 served · groundwaternone on record
LANDMARK SUBDIVISION · BOZEMAN · 750 served · purchased groundwaternone on record
MONTANA STATE HOSPITAL COMPLEX · WARM SPRINGS · 721 served · groundwaternone on record
FAIRFIELD TOWN OF · FAIRFIELD · 718 served · groundwaternone on record
NORTH STAR PUD · HELENA · 715 served · groundwaternone on record
CULBERTSON TOWN OF · CULBERTSON · 714 served · purchased surface waternone on record
TRAVOIS VILLAGE MOBILE PARK · MISSOULA · 702 served · purchased groundwaternone on record
GARDINER PARK CO WATER DIST · GARDINER · 700 served · groundwaternone on record
ELK GROVE WATER · BOZEMAN · 672 served · groundwaternone on record
GENESIS BUSINESS PARK · BOZEMAN · 670 served · groundwaternone on record
HILLSIDE VILLAGE · BILLINGS · 650 served · purchased surface waternone on record
CASCADE TOWN OF · CASCADE · 650 served · groundwaternone on record
CIRCLE TOWN OF · CIRCLE · 644 served · groundwaternone on record
SHERIDAN TOWN OF · SHERIDAN · 632 served · groundwaternone on record
GREENFIELD MOBILE HOME PARK · MISSOULA · 620 served · groundwaternone on record
BIG SANDY TOWN OF · BIG SANDY · 608 served · groundwaternone on record
JOLIET TOWN OF · JOLIET · 600 served · groundwaternone on record
BELT TOWN OF · BELT · 600 served · groundwaternone on record
HOT SPRINGS MUNICIPAL WATER · HOT SPRINGS · 600 served · groundwaternone on record
COUNTRYSIDE VILLAGE MHP GRT FLS · GREAT FALLS · 600 served · purchased surface waternone on record
CHERRY CREEK ESTATES LLC · BILLINGS · 600 served · purchased surface waternone on record
VAUGHN CASCADE COUNTY WATER AND SEWER · VAUGHN · 585 served · groundwaternone on record
WINDSOR ESTATES · BILLINGS · 530 served · purchased surface waternone on record
TWO BUTTES WATER USERS ASSN · SUN RIVER · 525 served · groundwaternone on record
WYE AREA WATER SYSTEM · MISSOULA · 512 served · groundwaternone on record
GORE HILL COUNTY WATER DIST · GREAT FALLS · 500 served · groundwaternone on record
HIGHLAND PARK UTILITIES ASSN · GLENDIVE · 500 served · groundwaternone on record
HEADQUARTERS APGAR · WEST GLACIER · 500 served · groundwaternone on record
COVERED WAGON MB HM PARK · BOZEMAN · 500 served · purchased surface waternone on record
MCHUGH MOBILE HOME PARK · HELENA · 490 served · groundwaternone on record
COUNTRY ESTATES WATER SUPPLY · KALISPELL · 490 served · groundwaternone on record
TREASURE STATE ACRES WUA · HELENA · 483 served · groundwaternone on record
LODGE GRASS TOWN OF · LODGE GRASS · 480 served · groundwaternone on record
CUSTER CO WATER AND SEWER DIST · MILES CITY · 480 served · purchased surface waternone on record
CUT BANK NORTH WATER DISTRICT · SANTA RITA · 478 served · purchased surface waternone on record
FLATHEAD CO WATER DISTRICT NO 8 · WHITEFISH · 475 served · groundwaternone on record
PRYOR CREEK WATER ASSN · HUNTLEY · 475 served · groundwaternone on record
TRI COUNTY WATER DISTRICT · FAIRFIELD · 470 served · groundwaternone on record
SUNBURST TOWN OF · SUNBURST · 459 served · groundwaternone on record
INDIAN SPRINGS RANCH SUB · EUREKA · 455 served · groundwaternone on record
VALIER TOWN OF · VALIER · 452 served · groundwaternone on record
NORTH VALLEY COUNTY WATER AND SEWER DIST · ST MARIE · 450 served · purchased surface waternone on record
CORAM COUNTY WATER AND SEWER DISTRICT · CORAM · 450 served · groundwaternone on record
BROADUS TOWN OF · BROADUS · 450 served · groundwaternone on record
CONSOLIDATED CHARLO LAKE CO W AND S DIST · CHARLO · 450 served · groundwaternone on record
GREENACRES COUNTY WATER AND SEWER DIST · KALISPELL · 450 served · groundwaternone on record
FORT SMITH WATER AND SEWER DISTRICT · FORT SMITH · 450 served · groundwaternone on record
WILDERNESS CLUB THE · EUREKA · 440 served · groundwaternone on record
STANFORD TOWN OF · STANFORD · 425 served · groundwaternone on record
TWIN BRIDGES TOWN OF · TWIN BRIDGES · 424 served · groundwaternone on record
MEADOW MANOR · KALISPELL · 410 served · purchased groundwaternone on record
LA CASA GRANDE WATER AND SEWER DISTRICT · HELENA · 404 served · groundwaternone on record
GOLDEN ESTATES HOMEOWNERS ASSOCIATION · HELENA · 400 served · groundwaternone on record
WYLIE CREEK ESTATES SUBDIVISION · BELGRADE · 400 served · groundwaternone on record
HIGHWOOD MOBILE HOME PARK · GREAT FALLS · 400 served · purchased surface waternone on record
EKALAKA TOWN OF · EKALAKA · 400 served · groundwaternone on record
FOREST ACRES TR PK WHITEFISH · WHITEFISH · 390 served · groundwaternone on record
GRANT CREEK WATER USERS ASSOCIATION INC · MISSOULA · 380 served · groundwaternone on record
STONE CREEK SUBDIVISION · BILLINGS · 378 served · groundwaternone on record
SUNDANCE SUBDIVISION · BILLINGS · 378 served · groundwaternone on record
JORDAN TOWN OF · JORDAN · 364 served · groundwaternone on record
MT MOONLIGHT BASIN · BIG SKY · 355 served · groundwaternone on record
CHERRY VIEW · LAKESIDE · 352 served · groundwaternone on record
BAINVILLE TOWN OF · BAINVILLE · 350 served · purchased surface waternone on record
SADDLE MOUNTAIN CORP CLANCY · CLANCY · 350 served · groundwaternone on record
WATER SERVICE INC TROUT CREEK · TROUT CREEK · 350 served · groundwaternone on record
SUN PRAIRIE WATER DISTRICT · GREAT FALLS · 350 served · groundwaternone on record
FIRELIGHT MEADOWS LLC · BIG SKY · 350 served · groundwaternone on record
RIVERSIDE WATER AND SEWER DIST · BOZEMAN · 344 served · groundwaternone on record
MARTIN CITY COUNTY WATER DISTRICT · MARTIN CITY · 340 served · groundwaternone on record
IRON HORSE HOMEOWNERS ASSOC · WHITEFISH · 335 served · groundwaternone on record
FOREST PARK WATER USERS ASSOCIATION · CLANCY · 323 served · groundwaternone on record
MOUNTAIN ACRES MB HM PK · LEWISTOWN · 320 served · purchased groundwaternone on record
EMERALD VIEW PARK · BILLINGS · 320 served · purchased surface waternone on record
SHILOH ROAD DEVELOPMENT · BILLINGS · 315 served · purchased surface waternone on record
SOUTHSIDE PUBLIC WATER SUPPLY · SOMERS · 306 served · groundwaternone on record
ROBERTS WUA CARBON CO WATER AND SEWER · ROBERTS · 300 served · groundwaternone on record
MOUNTAIN MEADOWS ESTATES LLP · BOZEMAN · 300 served · groundwaternone on record
MOUNTAIN VILLA APTS KALISPELL · KALISPELL · 300 served · groundwaternone on record
MOBILE CITY HOME PARK NO 2 · HELENA · 300 served · groundwaternone on record
CLYDE PARK WATER DEPT · CLYDE PARK · 300 served · groundwaternone on record
NCMRWA NORTH SHELBY · SHELBY · 300 served · purchased groundwaternone on record
KELLER SUBDIVISION NO 2 HOA · DILLON · 300 served · groundwaternone on record
HILDRETH SUBDIVISION NO 2 · DILLON · 300 served · groundwaternone on record
COOKE CITY WATER DISTRICT · COOKE CITY · 300 served · groundwaternone on record
NORTHERN PINES COMMUNITY HOA · KALISPELL · 295 served · groundwaternone on record
JETTE LAKE LANDOWNERS ASSOCIATION · POLSON · 295 served · groundwaternone on record
ANACONDA CCC · ANACONDA · 290 served · surface waternone on record
KEVIN TOWN OF · KEVIN · 290 served · groundwaternone on record
AP WILLIAMS · KALISPELL · 280 served · groundwaternone on record
HIGHWOOD COUNTY WATER AND SEWER DISTRICT · HIGHWOOD · 280 served · groundwaternone on record
LIMA TOWN OF · LIMA · 279 served · groundwaternone on record
TRAPPER CREEK JOB CORPS · DARBY · 275 served · groundwaternone on record
GREAT FALLS RV PARK · GREAT FALLS · 274 served · purchased surface waternone on record
ALPINE PACIFIC UTILITIES · KALISPELL · 270 served · groundwaternone on record
FOREST PARK TR CT NO 1 BOZEMAN · BOZEMAN · 260 served · groundwaternone on record
COUNTRY LAKE HOMES WHITEFISH · WHITEFISH · 260 served · groundwaternone on record
KATOONAH LODGES · MISSOULA · 258 served · groundwaternone on record
SORREL SPRINGS HOA · FRENCHTOWN · 250 served · groundwaternone on record
LEXLEY ACRES MOBILE HOME PARK · BELGRADE · 250 served · groundwaternone on record
RIDGEWOOD ESTATES · BIGFORK - LAKE CO · 250 served · surface waternone on record
RANCHVIEW ESTATES WUA · HELENA · 250 served · groundwaternone on record
HELENA RV AND MOBILE HOME PARK · HELENA · 250 served · groundwaternone on record
PRECISION WATER · BILLINGS · 250 served · purchased surface waternone on record
PONDEROSA HOMEOWNERS ASSN INC · KALISPELL · 246 served · groundwaternone on record
GOLDEN MEADOWS SUBDIVISION 2ND CC · BILLINGS · 245 served · purchased surface waternone on record
YELLOWSTONE BOYS AND GIRLS RANCH · BILLINGS · 240 served · groundwaternone on record
FORT PECK TOWN OF · FORT PECK · 240 served · surface waternone on record
WELLS GARDEN ESTATES · BILLINGS · 240 served · groundwaternone on record
GREEN TREE MEADOWS COUNTY W AND S DIST · KALISPELL · 237 served · groundwaternone on record
SKYCREST ESTATES SUBDIVISION · BILLINGS · 235 served · groundwaternone on record
HEBGEN LAKE ESTATES CO WATER SEWER DISTR · WEST YELLOWSTONE · 230 served · groundwaternone on record
KOKANEE BEND HOA · COLUMBIA FALLS · 230 served · groundwaternone on record
SPIRIT HILLS SUBDIVISION · BOZEMAN · 230 served · groundwaternone on record
NEIHART TOWN OF · NEIHART · 229 served · surface waternone on record
GRASS LAND ESTATES · HELENA · 228 served · groundwaternone on record
SAGE CREEK CO WATER DISTRICT · CHESTER · 225 served · groundwaternone on record
HOLLYWOOD HEIGHTS TRAILER PARK LLC · MISSOULA · 220 served · groundwaternone on record
THE NINES SUBDIVISION · BILLINGS · 220 served · groundwaternone on record
CASITAS DEL RIO · GLENDIVE · 216 served · purchased surface waternone on record
SALISH SHORES TRADE WINDS COMM VILLAGE · THOMPSON FALLS · 215 served · groundwaternone on record
CIRCLE H WATER INC · MISSOULA · 215 served · groundwaternone on record
WAGON WHEEL TRAILER VILLAGE · MISSOULA · 210 served · groundwaternone on record
POWER TETON COUNTY WATER DIST · POWER · 205 served · surface waternone on record
BRIDGE CREEK ESTATES SUBDIVISION · HELENA · 205 served · groundwaternone on record
LION MOUNTAIN HOMEOWNERS ASSOC · KALISPELL · 204 served · groundwaternone on record
MISSION MEADOWS RV CAMPSITE PARK, INC · RONAN · 200 served · groundwaternone on record
TARGET RANGE TRAILER COURT LLC · MISSOULA · 200 served · groundwaternone on record
BEARCREEK MUNICIPAL WATER SYS · RED LODGE · 200 served · groundwaternone on record
GALATA COUNTY WATER DISTRICT · GALATA · 200 served · groundwaternone on record
PARADISE WATER DISTRICT · PARADISE · 200 served · groundwaternone on record
BROADVIEW TOWN OF · BROADVIEW · 200 served · groundwaternone on record
OAK RIDGE ESTATES · BILLINGS · 200 served · groundwaternone on record
GO 2 U WATER DELIVERY · LAUREL · 200 served · purchased surface waternone on record
LOMA COUNTY WATER DISTRICT · LOMA · 200 served · surface waternone on record
TRACY WATER USERS CORP · SAND COULEE · 200 served · groundwaternone on record
GREENWOOD VILLAGE RV AND MHP · KALISPELL · 195 served · purchased groundwaternone on record
VALLEY GARDEN GOLF VILLAGE HOA · ENNIS · 195 served · groundwaternone on record
PINE HILLS YOUTH CORRECT FACIL · MILES CITY · 193 served · purchased surface waternone on record
STAR MOBILE HOME PARK · BOZEMAN · 190 served · groundwaternone on record
WINNETT TOWN OF · WINNETT · 187 served · groundwaternone on record
MOORE TOWN OF · MOORE · 186 served · groundwaternone on record
PELE PARK · EAST HELENA · 186 served · groundwaternone on record
RAMSHORN VIEW ESTATES · BIG SKY · 185 served · groundwaternone on record
CHERRY CREEK WUA GLASGOW · GLASGOW · 180 served · groundwaternone on record
SACO TOWN OF · SACO · 180 served · groundwaternone on record
TAMARACK WOODS HOA LAKESIDE · LAKESIDE · 180 served · groundwaternone on record
CASITAS DEL MESA MHP · GLENDIVE · 180 served · groundwaternone on record
RICHEY TOWN OF · RICHEY · 180 served · groundwaternone on record
GOLDEN AGE VILLAGE · CORWIN SPRINGS · 180 served · groundwaternone on record
DAVIS MEADOW VILLAGE · EAST HELENA · 180 served · groundwaternone on record
BAIR CLARK PROPERTIES, LLC · MISSOULA · 180 served · groundwaternone on record
MOUNTAIN HERITAGE WATER SYSTEM · EAST HELENA · 175 served · groundwaternone on record
KOOTENAI CREEK VILLAGE · STEVENSVILLE · 175 served · groundwaternone on record
MOBILE CITY TRAILER COURT · MISSOULA · 175 served · groundwaternone on record
TOWN VIEW ESTATES WUA INC · HELENA · 175 served · groundwaternone on record
MELSTONE TOWN OF · MELSTONE · 170 served · groundwaternone on record
GRANDVIEW TRAILER COURT · GREAT FALLS · 165 served · purchased surface waternone on record
HAWTHORN SPRINGS PROPERTY OWNERS ASSOC · MISSOULA · 165 served · groundwaternone on record
PRAIRIE MOBILE VILLAGE · HELENA · 163 served · groundwaternone on record
GREENLAND MOBILE HOME PARK · MISSOULA · 163 served · groundwaternone on record
REXFORD TOWN OF · REXFORD · 160 served · groundwaternone on record
NEW ROCKPORT COLONY INC · CHOTEAU · 160 served · groundwaternone on record
SUNHAVEN MOBILE HOME PARK · LAUREL · 160 served · purchased surface waternone on record
EMKAYAN VILLAGE CO WATER AND SEWER DIST · LIBBY · 160 served · groundwaternone on record
HANGMANS TREE WUA · CLANCY · 158 served · groundwaternone on record
EAST EVERGREEN MOBILE MANOR · KALISPELL · 155 served · purchased groundwaternone on record
CHURCHILL NORTH SUBDIVISION · MANHATTAN · 155 served · groundwaternone on record
MOUNTAIN VIEW MB HM PK · TOWNSEND · 150 served · groundwaternone on record
GLENDALE COLONY · CUT BANK · 150 served · groundwaternone on record
MEADOWLAND HOA · KALISPELL · 150 served · groundwaternone on record
HORIZON COLONY · SANTA RITA · 150 served · groundwaternone on record
STOCK FARM THE · HAMILTON · 150 served · groundwaternone on record
ANGEL ISLAND SUBDIVISION · TROY · 150 served · groundwaternone on record
SPRINGVALE SUBDIVISION · BELGRADE · 150 served · groundwaternone on record
SADDLEBACK RIDGE ESTATES · BILLINGS · 150 served · groundwaternone on record
SHYROCK MOTORCOACH COMMUNITY · Mineral County · 150 served · groundwaternone on record
YOUTH WITH A MISSION · LAKESIDE · 150 served · groundwaternone on record
MARTINSDALE COLONY · MARTINSDALE · 150 served · groundwaternone on record
COBBLESTONE SUBDIVISION · BOZEMAN · 150 served · purchased groundwaternone on record
QUAIL RIDGE · KALISPELL · 148 served · groundwaternone on record
C & C COMMUNITY INC · BILLINGS · 145 served · purchased surface waternone on record
SHELBY ADDITION WATER DISTRICT · LOLO · 145 served · groundwaternone on record
NCMRWA PONDERA CO SERVICE AREA · CONRAD · 144 served · purchased surface waternone on record
STONEY BROOK VILLAGE CONDOMINIUM ASSOC · CLANCY · 142 served · groundwaternone on record
OLD HELLGATE VILLAGE MSLA · MISSOULA · 140 served · groundwaternone on record
ROCKY CLIFF ESTATES · KALISPELL · 140 served · groundwaternone on record
EASTWOOD MOBILE HOME COURT · BILLINGS · 140 served · purchased surface waternone on record
C AND D HOA · MISSOULA · 140 served · groundwaternone on record
MAGNOLIA ESTATES · MISSOULA · 140 served · groundwaternone on record
TWO RIVERS MOBILE HM PK LOLO · MISSOULA · 138 served · groundwaternone on record
CORVALLIS MOBILE VILLAGE · CORVALLIS · 138 served · groundwaternone on record
AVALON SUBDIVISION · EMIGRANT · 135 served · groundwaternone on record
SUNRISE TERRACE SUBD NO 2 · KALISPELL · 131 served · groundwaternone on record
MEADOW HILLS WATER AND SEWER DISTRICT · KALISPELL · 130 served · groundwaternone on record
BITTERROOT GATEWAY MB PK LOLO · LOLO · 130 served · groundwaternone on record
FOREST INN LOUNGE AND APARTMENTS · MISSOULA · 130 served · groundwaternone on record
PLEVNA TOWN OF · PLEVNA · 130 served · groundwaternone on record
NEW MIAMI COLONY · CONRAD · 130 served · groundwaternone on record
SAGE CREEK COLONY · CHESTER · 130 served · groundwaternone on record
STILLWATER ESTATES COUNTY W AND S DIST · KALISPELL · 130 served · groundwaternone on record
BIG STONE COLONY INC · SAND COULEE · 130 served · groundwaternone on record
BONNER HOUSING PWS SYSTEM · BONNER · 128 served · groundwaternone on record
TWO MILE TRACT HOA · KALISPELL · 128 served · groundwaternone on record
JUDITH GAP TOWN OF · JUDITH GAP · 126 served · groundwaternone on record
ALPINE VILLAGE WUA · WHITEFISH · 125 served · groundwaternone on record
PLEASANT PARK COMMUNITY INC · GREAT FALLS · 125 served · groundwaternone on record
COUNTRY ESTATES MBLE HOME PARK · COLUMBIA FALLS · 125 served · groundwaternone on record
HOBSON TOWN OF · HOBSON · 125 served · groundwaternone on record
PEBBLE GARDENS MOBILE HOME CT · HELENA · 125 served · groundwaternone on record
GEYSER JUDITH BASIN CTY WATER SEWER DIST · GEYSER · 125 served · groundwaternone on record
WINDMILL TRAILER PARK WELL 2 · LIVINGSTON · 125 served · groundwaternone on record
WEST MOUNTAIN ESTATES · ALBERTON · 125 served · groundwaternone on record
YELLOWTAIL DAM GC SYSTEM · HARDIN · 125 served · groundwaternone on record
EAGLE CREEK COLONY · CHESTER · 125 served · groundwaternone on record
RIMROCK COLONY · SUNBURST · 124 served · groundwaternone on record
THE BENCHES · WHITEFISH · 123 served · groundwaternone on record
DALY ESTATES SUBDIVISION · HAMILTON · 123 served · groundwaternone on record
LAZY J SOUTH SUBDIVISION · BOZEMAN · 122 served · groundwaternone on record
PLEASANT VALLEY COLONY · BELT · 120 served · groundwaternone on record
MEADOW BROOK PARK · FRENCHTOWN · 120 served · groundwaternone on record
BITTERROOT MEADOWS HOA LOLO · MISSOULA · 120 served · groundwaternone on record
HOLBROOK ESTATES · KALISPELL · 120 served · groundwaternone on record
WILD FLOWER HOA, THE · HAMILTON · 120 served · groundwaternone on record
NORTHWEST INDIAN BIBLE SCHOOL · ALBERTON · 118 served · groundwaternone on record
MISSION MOUNTAIN LAKE CO W AND S DIST · RONAN · 118 served · groundwaternone on record
SEVILLE COLONY · CUT BANK · 116 served · surface waternone on record
RIVERWALK AND DINOS ESTATES · MISSOULA · 115 served · groundwaternone on record
CENTENNIAL HOMEOWNER'S ASSOCIATION, INC · CORVALLIS · 115 served · groundwaternone on record
VALLEY WEST TRAILER COURT · LOLO · 115 served · groundwaternone on record
EAGLE RIDGE ESTATES CO W AND S DIST · KALISPELL · 115 served · groundwaternone on record
MOUNTAIN VIEW COLONY · BROADVIEW · 114 served · groundwaternone on record
PONDERA COLONY WATER SYSTEMS · VALIER · 112 served · groundwaternone on record
NORTH BAKER WATER AND OR SEWER DIST · BAKER · 112 served · purchased groundwaternone on record
TRESTLE CREEK I AND II · ST REGIS · 110 served · groundwaternone on record
ROY WATER AND SEWER DISTRICT · ROY · 110 served · groundwaternone on record
Source: U.S. EPA Safe Drinking Water Information System (SDWIS). "Health-based" counts maximum-contaminant-level, treatment-technique and maximum-residual-disinfectant-level violations recorded since 2015. A violation on record — especially a resolved one — is not a statement about water quality today; contact the water system or your state drinking-water program for current information.