Montana utilities 401 to 500.

Each serves 80 to 112 people, as it reports to EPA. Your ZIP code finds yours faster.

Find a Montana utility, city or county

401 to 500 of 754, by people served

Montana utilities, 401 to 500 of 754, by people served
Utility	Based in	Serves	Regulated PFAS	Health-based violations since 2016
North Baker Water and Or Sewer Dist	Baker	112	Not sampled	0
Pondera Colony Water Systems	Valier	112	Not sampled	0
Town of Opheim	Opheim	111	Not sampled	2
Lewis and Clark Trailer Court	Missoula	110	Not sampled	0
Roy Water and Sewer District	Roy	110	Not sampled	0
Trestle Creek I and II	St Regis	110	Not sampled	0
Windmill Trailer Park Well 1	Livingston	110	Not sampled	0
Big Sky Colony Cut Bank	Cut Bank	107	Not sampled	0
Bee Hive Homes Msla	Missoula	106	Not sampled	8
MT Ellis Academy	Bozeman	106	Not sampled	2
Cascade Colony	Sun River	105	Not sampled	0
Fairhaven Colony	Ulm	105	Not sampled	0
Homestead Valley WUA Hvha	Helena	105	Not sampled	0
Manhattan Camper Court	Manhattan	105	Not sampled	0
Montana Christian College	Kalispell	105	Not sampled	0
Sunset West Rsid	Missoula	105	Not sampled	0
Town of Grass Range	Grass Range	102	Not sampled	0
Aldinger Acres Subdivision	Billings	100	Not sampled	0
Bear Creek Village Bigfork	Bigfork - Lake Co	100	Not sampled	0
Big Bend Ranch Subdivision	Great Falls	100	Not sampled	1
Bryant No 3 Subdivision	Helena	100	Not sampled	0
Bynum - Teton Co W & S District	Bynum	100	Not sampled	0
Cmrwa Musselshell Judith Rural Water Sys	Harlowton	100	Not sampled	0
Country Haven Estates Whispering Pines	Columbus	100	Not sampled	0
East End Colony Inc	Havre	100	Not sampled	0
Encampment Trail	Big Sky	100	Not sampled	0
Gallatin Village Mob Hm Park	Bozeman	100	Not sampled	0
Godfrey Canyon Estates	Manhattan	100	Not sampled	2
Golden Valley Colony	Ryegate	100	Not sampled	0
Hillside Colony Inc	Sweetgrass	100	Not sampled	0
Hilltop Colony	Stockett	100	Not sampled	0
Lakeshore Heights HOA	Kalispell	100	Not sampled	0
Mobile City Home Park No 1	Helena	100	Not sampled	0
Riders Trailer Court	Manhattan	100	Not sampled	0
River Grove Estates Tr CT	Billings	100	Not sampled	0
Riverside Mobile Home Park	Columbia Falls	100	Not sampled	0
Settlement the	Manhattan	100	Not sampled	0
Shepherd Water Station	Shepherd	100	Not sampled	0
Springwater Colony	Harlowton	100	Not sampled	0
Sweetgrass Water Users Assn	Sweetgrass	100	Not sampled	1
Thompson Ranchettes II	Kalispell	100	Not sampled	0
Whispering Trees Mobile Park	Glendive	100	Not sampled	1
Harveys Mobile Home Park	Missoula	98	Not sampled	0
North Forestvale Homeowners	Helena	98	Not sampled	0
Ramsay Water and Sewer District	Ramsay	97	Not sampled	0
Camel Mountain HOA	Helena	96	Not sampled	0
Camelot HOA	Helena	96	Not sampled	0
Duncan Ranch Colony	Harlowton	96	Not sampled	0
Mystic Heights HOA Bozeman	Bozeman	96	Not sampled	0
Outlook County Sewer and Water	Outlook	96	Not sampled	0
Buzz Inn	East Helena	95	Not sampled	0
Camrose Colony	Ledger	95	Not sampled	2
North Haven Heights Water Assoc Inc	Kalispell	95	Not sampled	0
Paradise Pines	Polson	95	Not sampled	0
Peks Mobile Home Court	Billings	95	Not sampled	0
Stoneridge Home Owners Association	Kalispell	95	Not sampled	0
Piegan Border Station	Babb	94	Not sampled	0
Ap Countryside Estates	Kalispell	93	Not sampled	0
Hi - Line Colony	Whitlash	92	Not sampled	0
Lakeview Park Estates Homeowners Assoc	Lakeside	92	Not sampled	0
Midway Colony Inc	Conrad	92	Not sampled	0
Rockport Colony	Pendroy	92	Not sampled	1
Buena Vista Community, Inc	Missoula	90	Not sampled	0
Buffalo Mountain Subdivision	Whitefish	90	Not sampled	0
Clearview Heights Lake County Water Dist	Polson	90	Not sampled	0
Galen Facility	Anaconda	90	Not sampled	0
I 94 Mobile Home Park	Glendive	90	Not sampled	1
Masonic Home of Montana	Helena	90	Not sampled	0
Ncmrwa North Havre CWD Leg	Havre	90	Not sampled	0
Nine Mile Co Water and Sewer District	Sunburst	90	Not sampled	0
North Havre County Water Dist	Havre	90	Not sampled	0
Pleasant Hill Estates HOA	Kalispell	90	Not sampled	1
Ranch Co Water & Sewer Dist the	Bigfork - Lake Co	90	Not sampled	0
Springhill Park Subdivision	Bozeman	90	Not sampled	0
West Glacier WUA	West Glacier	90	Not sampled	0
Westana Mobile Manor Hamilton	Hamilton	90	Not sampled	0
Elkhorn Health and Rehabilitation LLC	Clancy	89	Not sampled	0
Hillcrest Colony	Power	89	Not sampled	0
Park Evergreen Trailer Court	Helena	87	Not sampled	0
Springdale Hutterite Colony	White Sulphur Springs	87	Not sampled	0
Antigone Acres HOA	Hamilton	85	Not sampled	0
Applegate Village	Helena	85	Not sampled	0
Fallon County Water District	Baker	85	Not sampled	0
Green Acres Court	Kalispell	85	Not sampled	0
Milltown Water Users Asso South	Milltown	85	Not sampled	0
Morning Star	Kalispell	85	Not sampled	0
Pleasant View Homesites W and S District	Kalispell	85	Not sampled	1
Ranch Headquarters	Corwin Springs	85	Not sampled	0
Richland Co Valley View WUA	Sidney	85	Not sampled	12
Stillwater Water District	Kalispell	85	Not sampled	0
Sunrise Terrace No 1 HOA	Kalispell	85	Not sampled	0
Yellowstone Holiday WTR and Sew District	West Yellowstone	85	Not sampled	0
Elk Creek Colony	Augusta	84	Not sampled	7
Heron Community Water System	Heron	84	Not sampled	0
Miller Colony	Choteau	84	Not sampled	1
South Forestvale HOA	Helena	82	Not sampled	1
Town of Flaxville	Flaxville	82	Not sampled	3
Valley Water System the	Missoula	82	Not sampled	0
White Bird Community the	Hamilton	82	Not sampled	0
Churchill Retirement Home	Manhattan	80	Not sampled	0

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.

401 to 500 of 754, by people served

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