Montana utilities 601 to 700.
Each serves 36 to 55 people, as it reports to EPA. Your ZIP code finds yours faster.
601 to 700 of 754, by people served
| Utility | Based in | Serves | Regulated PFAS | Health-based violations since 2016 |
|---|---|---|---|---|
| Mountain Shadows Estates Stevensville | Stevensville | 55 | Not sampled | 1 |
| New Castle Court | Missoula | 55 | Not sampled | 0 |
| South Chester Water Dist | Chester | 55 | Not sampled | 4 |
| Sunset Pines | Bonner | 55 | Not sampled | 0 |
| Whispering Pines Tr CT | St Regis | 55 | Not sampled | 0 |
| Pine Crest Tr Pk | Livingston | 54 | Not sampled | 4 |
| Blanchard Hollow Estates WUA | Whitefish | 53 | Not sampled | 0 |
| Greenwood Trailer Court | Missoula | 53 | Not sampled | 1 |
| Hamilton Mobile Village | Hamilton | 53 | Not sampled | 0 |
| Kootenai Woods Subdivision | Bigfork | 53 | Not sampled | 0 |
| Pheasant Haven Estates | Kalispell | 53 | Not sampled | 0 |
| Fieldstone Subdivision | Whitefish | 52 | Not sampled | 0 |
| Sphinx Mountain Mb Hm Pk | Corwin Springs | 52 | Not sampled | 0 |
| Deerfield Hutterite Colony | Lewistown | 51 | Not sampled | 0 |
| Amity Square Water System | Missoula | 50 | Not sampled | 0 |
| Antler Ridge Homeowners Association | Big Sky | 50 | Not sampled | 0 |
| Belgrade Trailer Court | Belgrade | 50 | Not sampled | 0 |
| Best View Estates | Somers | 50 | Not sampled | 0 |
| Carols Trailer Court | Missoula | 50 | Not sampled | 0 |
| Cooney Enterprises | Billings | 50 | Not sampled | 0 |
| Cottonwood Estates | Big Timber | 50 | Not sampled | 0 |
| Crane Mountain Estates | Bigfork - Lake Co | 50 | Not sampled | 0 |
| District Court LLC | Kalispell | 50 | Not sampled | 0 |
| Double Diamond Subdivision Arbor Hills | Billings | 50 | Not sampled | 0 |
| Eagle Mountain Rural PWS | Columbus | 50 | Not sampled | 0 |
| Forest Hill HOA | Kalispell | 50 | Not sampled | 0 |
| Fosters Country View Tr Pk LLC | Kalispell | 50 | Not sampled | 0 |
| Franklin Hills Subdivision | Bozeman | 50 | Not sampled | 0 |
| Frenchtown Valley View Tr CT | Frenchtown | 50 | Not sampled | 0 |
| Grand Valley Estates Subdivision | Helena | 50 | Not sampled | 0 |
| Gravel Hollow LLC | Gallatin Gateway | 50 | Not sampled | 0 |
| Grove the | Missoula | 50 | Not sampled | 0 |
| Hawarden Square Butte Water | Fort Benton | 50 | Not sampled | 0 |
| Helena North Koa | Helena | 50 | Not sampled | 0 |
| Honey Lane Community | Hamilton | 50 | Not sampled | 0 |
| North Geraldine Water System | Geraldine | 50 | Not sampled | 0 |
| Palisades Apartments | Miles City | 50 | Not sampled | 6 |
| Park Garden Estates | Great Falls | 50 | Not sampled | 0 |
| Pinnacle Estates of Glendive | Glendive | 50 | Not sampled | 6 |
| Potts Trailer Court Belgrade | Belgrade | 50 | Not sampled | 0 |
| R J Northern Park | Kalispell | 50 | Not sampled | 0 |
| Rio Vista Estates HOA Assoc Inc | Laurel | 50 | Not sampled | 0 |
| Rosewood Acres | Kalispell | 50 | Not sampled | 0 |
| Sleeping Giant Community Inc | Livingston | 50 | Not sampled | 0 |
| Stone Ridge Water Company | Polson | 50 | Not sampled | 0 |
| Sunnybrook Acres HOA | East Helena | 50 | Not sampled | 0 |
| Turner Colony | Turner | 50 | Not sampled | 15 |
| Turning Winds | Troy | 50 | Not sampled | 0 |
| Two Dot Water Users Company | Two Dot | 50 | Not sampled | 0 |
| Whitefish Hills Village | Whitefish | 50 | Not sampled | 0 |
| Windy Acres WUA | Black Eagle | 50 | Not sampled | 0 |
| Overlook Subdivision | Polson | 49 | Not sampled | 1 |
| Grinell Estates HOA | Frenchtown | 48 | Not sampled | 0 |
| Northfork Tr CT Columbia Falls | Kalispell | 48 | Not sampled | 0 |
| Red Cliff Estates HOA | Clancy | 48 | Not sampled | 0 |
| Spring Creek Colony Lewistown | Lewistown | 48 | Not sampled | 0 |
| Spruce Park Mobile Village | Kalispell | 48 | Not sampled | 0 |
| Columbia Range HOA | Kalispell | 47 | Not sampled | 1 |
| East Malta Colony | Malta | 47 | Not sampled | 0 |
| Pinewood Shores WUA | Polson | 46 | Not sampled | 0 |
| Alpine Mobile Manor | Kalispell | 45 | Not sampled | 0 |
| Bitterroot Pines Tr CT Florence | Florence | 45 | Not sampled | 0 |
| Cougar Meadows | St Regis | 45 | Not sampled | 0 |
| Evergreen Subdivision | Billings | 45 | Not sampled | 0 |
| Forest Creek Subd | Bozeman | 45 | Not sampled | 0 |
| Home 40 Public Water Supply | Bozeman | 45 | Not sampled | 1 |
| Loring Hutterian Brethren Inc | Loring | 45 | Not sampled | 0 |
| Mount Pleasant Estates | Sidney | 45 | Not sampled | 0 |
| Pleasant View Water and Sewer District | Polson | 45 | Not sampled | 0 |
| Posts Trailer Court | Libby | 45 | Not sampled | 0 |
| Sky Ranch Water Association | Kalispell | 45 | Not sampled | 0 |
| Sunset Boulder MHP LLC | Great Falls | 45 | Not sampled | 0 |
| Wards Cove Water Users | Hamilton | 45 | Not sampled | 0 |
| Woodlands Subdivision | Kalispell | 45 | Not sampled | 0 |
| Moonlight Estates HOA | Helena | 44 | Not sampled | 0 |
| Avista Utilities Noxon Rapids Dam | Noxon | 43 | Not sampled | 0 |
| Birchwood Duplexes | Missoula | 43 | Not sampled | 0 |
| Milltown Water Users Asso North | Bonner | 43 | Not sampled | 0 |
| Mountain View Trailer Court | Missoula | 42 | Not sampled | 0 |
| North Harlem Colony | Harlem | 42 | Not sampled | 0 |
| Prairie Falcon Acres | Columbia Falls | 41 | Not sampled | 0 |
| Ap Kookoosint | Kalispell | 40 | Not sampled | 2 |
| Broadwater Estates HOA | Helena | 40 | Not sampled | 5 |
| Gallatin River Apartments | Bozeman | 40 | Not sampled | 0 |
| Hansons Trailer Court | Kalispell | 40 | Not sampled | 0 |
| Mobile City 3 | Helena | 40 | Not sampled | 0 |
| Old Mill Peninsula HOA | St Regis | 40 | Not sampled | 0 |
| Spanish Peaks Mountain Club | Big Sky | 40 | Not sampled | 0 |
| Spruce Meadows HOA | Missoula | 40 | Not sampled | 0 |
| Timbers at Whitefish the | Kalispell | 40 | Not sampled | 0 |
| Hunters Trailer CT Anaconda | Anaconda | 38 | Not sampled | 0 |
| Whitefish River Ranch | Kalispell | 38 | Not sampled | 0 |
| Branco Court | Lolo | 37 | Not sampled | 0 |
| Countryside Court Missoula | Missoula | 37 | Not sampled | 0 |
| Lone View Ridge Water System | Big Sky | 37 | Not sampled | 0 |
| Canyon Ranches Subdivision | Red Lodge | 36 | Not sampled | 0 |
| East Wood Village Trailer Park | Columbia Falls | 36 | Not sampled | 0 |
| Foys Lakeside Estates Water & Sewer Dist | Kalispell | 36 | Not sampled | 0 |
| Mountain View Timbers HOA | Kalispell | 36 | Not sampled | 0 |
| Phoenix Park | East Helena | 36 | 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.
Where to go next
- Read your utility’s own reportIt covers contaminants these pages don’t show, and its own latest results.How to read it
- Every contaminantLegal limits, health goals and what handles each one.All contaminants
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