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Montana utilities 201 to 300.

Each serves 180 to 300 people, as it reports to EPA. Your ZIP code finds yours faster.

Matched to your utility using EPA records.

201 to 300 of 754, by people served

Montana utilities, 201 to 300 of 754, by people served
UtilityBased inServesRegulated PFASHealth-based violations since 2016
Hildreth Subdivision No 2Dillon300Not sampled0
Keller Subdivision No 2 HOADillon300Not sampled0
Mobile City Home Park No 2Helena300Not sampled0
Mountain Meadows Estates LlpBozeman300Not sampled0
Mountain Villa Apts KalispellKalispell300Not sampled0
Ncmrwa North ShelbyShelby300Not sampled0
Oilmont County Water DistrictShelby300Not sampled9
Roberts WUA Carbon Co Water and SewerRoberts300Not sampled0
Town of NashuaNashua300Not sampled2
Jette Lake Landowners AssociationPolson295Not sampled0
Northern Pines Community HOAKalispell295Not sampled0
Anaconda CccAnaconda290Not sampled0
Town of KevinKevin290Not sampled0
Ap WilliamsKalispell280Not sampled0
Highwood County Water and Sewer DistrictHighwood280Not sampled0
Town of LimaLima279Not sampled0
Rocky Mountain Hi Rv ParkKalispell275Not sampled0
Trapper Creek Job CorpsDarby275Not sampled0
Town of WinifredWinifred274Not sampled1
Alpine Pacific UtilitiesKalispell270Not sampled0
Town of RyegateRyegate270Not sampled2
Town of HyshamHysham262Not sampled7
Country Lake Homes WhitefishWhitefish260Not sampled0
Forest Park Tr CT No 1 BozemanBozeman260Not sampled0
Town of GeraldineGeraldine260Not sampled2
Katoonah LodgesMissoula258Not sampled0
Town of DentonDenton255Not sampled77
Blue Sky Heights WUA ClancyClancy250Not sampled0
Granite Park Water AssociationBillings250Not sampled1
Helena Rv and Mobile Home ParkHelena250Not sampled0
Hinsdale Water DepartmentHinsdale250Not sampled2
Lexley Acres Mobile Home ParkBelgrade250Not sampled0
Ranchview Estates WUAHelena250Not sampled0
Ridgewood EstatesBigfork - Lake Co250Not sampled0
Sorrel Springs HOAFrenchtown250Not sampled0
Wilsall Water DistrictWilsall250Not sampled4
Ponderosa Homeowners Assn IncKalispell246Not sampled0
Town of Fort PeckFort Peck240Not sampled0
Wells Garden EstatesBillings240Not sampled0
Yellowstone Boys and Girls RanchBillings240Not sampled0
Green Tree Meadows County W and S DistKalispell237Not sampled0
Skycrest Estates SubdivisionBillings235Not sampled0
Hebgen Lake Estates Co Water Sewer DistrWest Yellowstone230Not sampled0
Hilltop Terrace SubdivisionKalispell230Not sampled1
Huntley Yellowstone Co Water and SewerHuntley230Not sampled1
Kokanee Bend HOAColumbia Falls230Not sampled0
Ryan Dam Water SystemGreat Falls230Not sampled1
Spirit Hills SubdivisionBozeman230Not sampled0
Town of NeihartNeihart229Not sampled0
Grass Land EstatesHelena228Not sampled0
Crystal Springs Water SystemBillings225Not sampled9
Golden Estates Trailer CourtHelena225Not sampled3
Holmberg Village EstatesHelena225Not sampled1
Sage Creek Co Water DistrictChester225Not sampled0
Hollywood Heights Trailer Park LLCMissoula220Not sampled0
The Nines SubdivisionBillings220Not sampled0
Casitas del RioGlendive216Not sampled0
Circle H Water IncMissoula215Not sampled0
Salish Shores Trade Winds Comm VillageThompson Falls215Not sampled0
Flathead County Water Dist 101Columbia Falls210Not sampled0
Glacier Point Ho and WUAHelena210Not sampled1
Stockett Water and Sewer DistStockett210Not sampled1
Wagon Wheel Trailer VillageMissoula210Not sampled0
East Gate Work CampCorwin Springs208Not sampled0
Wilderness Plateau Water and Sewer DistTroy208Not sampled1
Goodan Keil Co Water DistMissoula207Not sampled1
Happy Valley Water Dist B KsplWhitefish207Not sampled0
Belfry Carbon Co Water and Sewer DistBelfry205Not sampled1
Bridge Creek Estates SubdivisionHelena205Not sampled0
Power Teton County Water DistPower205Not sampled0
Lion Mountain Homeowners AssocKalispell204Not sampled0
Basin County Water and Sewer DistBasin200Not sampled1
Bearcreek Municipal Water SysRed Lodge200Not sampled0
Galata County Water DistrictGalata200Not sampled0
Hidden Valley Owner LLCBozeman200Not sampled0
High Quality H2oMissoula200Not sampled3
Loma County Water DistrictLoma200Not sampled0
Mission Meadows Rv Campsite Park, IncRonan200Not sampled0
Ncmrwa Tiber Service AreaHavre200Not sampled15
Oak Ridge EstatesBillings200Not sampled0
Paradise Water DistrictParadise200Not sampled0
South Wind Water and Sewer DistrictGreat Falls200Not sampled3
Target Range Trailer Court LLCMissoula200Not sampled0
Town of BroadviewBroadview200Not sampled0
Tracy Water Users CorpSand Coulee200Not sampled0
Valley Garden Golf Village HOAEnnis195Not sampled0
Pine Hills Youth Correct FacilMiles City193Not sampled0
Star Mobile Home ParkBozeman190Not sampled0
Still River Estates SubdivisionBillings188Not sampled1
Town of WinnettWinnett187Not sampled0
Pele ParkEast Helena186Not sampled0
Town of MooreMoore186Not sampled0
Ramshorn View EstatesBig Sky185Not sampled0
Bair Clark Properties, LLCMissoula180Not sampled0
Casitas del Mesa MHPGlendive180Not sampled0
Cherry Creek WUA GlasgowGlasgow180Not sampled0
Davis Meadow VillageEast Helena180Not sampled0
Golden Age VillageCorwin Springs180Not sampled0
Sand Coulee Water Users DistrictSand Coulee180Not sampled1
Tamarack Woods HOA LakesideLakeside180Not sampled0

Every utility EPA sampled for PFAS under UCMR 5, any other community system serving 3,300 people or more, and any smaller one with results from 2020 on, from the state. Other systems appear in ZIP code results. People served is what each utility reports to EPA. Data: EPA SDWIS 2026 Q3, UCMR 5 and EPA’s 2012 to 2019 compliance results, and Montana Department of Environmental Quality, Public Water Supply.