Public Water Systems
2,263 active public water systems in MT, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
| Reynolds Market Sidney | Bismarck, MT | 25 | 89 | - |
| Motown RV and Apts | Missoula, MT | 25 | 72 | - |
| Albertsons Cut Bank 2033 | Oceanside, MT | 25 | 11 | - |
| Albertsons Gt Fls 3rd Ave NW No 2035 | Oceanside, MT | 25 | 30 | - |
| East View Acres Water System | Missoula, MT | 25 | 114 | - |
| Albertsons Livingston No 2042 | Oceanside, MT | 25 | 17 | - |
| Scotsman Bar and Cafe | Park City, MT | 25 | 348 | - |
| Lions Park and Spring | Miles City, MT | 25 | 76 | - |
| Reynolds Market Glndv | Bismarck, MT | 25 | 9 | - |
| Van Dykes Grocery Store - Sparkling Pure | Ranchester, MT | 25 | 0 | - |
| Lost Horse Lodge | Hamilton, MT | 25 | 145 | - |
| Safeway No 1581 | Oceanside, MT | 25 | 2 | - |
| Safeway No 2106 | Oceanside, MT | 25 | 3 | - |
| Stokes Market # 3421 | Oceanside, MT | 25 | 12 | - |
| Midtown Market | Ranchester, MT | 25 | 3 | - |
| Spring Hill Water Supply | Butte, MT | 25 | 25 | - |
| Hooper Park | Helena, MT | 25 | 18 | - |
| Judith Shadows Golf Course | Lewistown, MT | 25 | 94 | - |
| Pichionnies Forsyth Iga | Ranchester, MT | 25 | 3 | - |
| Broadus Iga | Ranchester, MT | 25 | 0 | - |
| Rosebud Foods | Ranchester, MT | 25 | 0 | - |
| Sherwood Water Station | Columbus, MT | 25 | 505 | - |
| Crossroads Conoco | Billings, MT | 25 | 28 | - |
| Bridger Bowl Employee Locker Bldg | Bozeman, MT | 25 | 11 | - |
| Glacier Water Smith F & D Klsp No 172 | Oceanside, MT | 25 | 7 | - |
| Albertsons Helena No 2008 | Oceanside, MT | 25 | 0 | - |
| Albertsons Malta No 2013 | Oceanside, MT | 25 | 6 | - |
| Albertsons Bozeman No 2006 | Oceanside, MT | 25 | 0 | - |
| Glacier Water Albertsons Klsp No 2018 | Oceanside, MT | 25 | 0 | - |
| Beartooth Iga Sparkling Pure | Ranchester, MT | 25 | 3 | - |
| Lockwood Iga Blgs Sparkling Pure | Ranchester, MT | 25 | 4 | - |
| Albertsons Harlem No 2032 | Oceanside, MT | 25 | 3 | - |
| Albertsons Missoula No 2024 | Oceanside, MT | 25 | 0 | - |
| Primo Water Dispenser Wal-Mart No 1872 | Oceanside, MT | 25 | 53 | - |
| Albertsons Anaconda No 2022 | Oceanside, MT | 25 | 7 | - |
| Bielenberg Landing HOA | Swan Lake, MT | 25 | 28 | - |
| Plains Physical Therapy Clinic | Plains, MT | 25 | 43 | - |
| Town & Country Belgrade | Oceanside, MT | 25 | 0 | - |
| Sidney Gymnastics Club | Sidney, MT | 25 | 131 | - |
| Primo Refill Wal-Mart No 1901 | Oceanside, MT | 25 | 50 | - |
| Primo Refill Wal-Mart No 2084 | Oceanside, MT | 25 | 34 | - |
| Dynojet Research | Belgrade, MT | 25 | 47 | - |
| The Trout Shop | Great Falls, MT | 25 | 13 | - |
| Lee Metcalf Wildlife Refuge | Stevensville, MT | 25 | 39 | - |
| Primo Refill Wal-Mart No 2608 | Oceanside, MT | 25 | 31 | - |
| Primo Refill Wal-Mart No 4247 | Oceanside, MT | 25 | 43 | - |
| Blue Dog RV | Kalispell, MT | 25 | 62 | - |
| Marion Heights Rail Line Tavern | Marion, MT | 25 | 12 | - |
| Country Bourne | Kalispell, MT | 25 | 118 | - |
| Smiths 168 Glacier Water Columbia Falls | Oceanside, MT | 25 | 3 | - |