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 |
| Central Water Conditioning | Sidney, MT | 50 | 74 | - |
| Gravel Hollow LLC | Gallatin Gateway, MT | 50 | 12 | - |
| Primo Refill Wal-Mart No 4412 | Oceanside, MT | 50 | 26 | - |
| Polson Foursquare Church | Polson, MT | 50 | 6 | - |
| Fortress of Joy Oneighty Bldg | Helena, MT | 50 | 13 | - |
| Stone Ridge Water Company | Lakeside, MT | 50 | 9 | - |
| Lucky Pick Casino | Kalispell, MT | 50 | 11 | - |
| Rosewood Acres | Kalispell, MT | 50 | 8 | - |
| West Park Cenex Glendive | Billings, MT | 50 | 21 | - |
| Primo Refill Water Disp at Stein Family | Oceanside, MT | 50 | 21 | - |
| Glacier Gold Casino | Whitefish, MT | 50 | 26 | - |
| Primo Refill Wal-Mart No 2259 | Oceanside, MT | 50 | 9 | - |
| Franklin Hills Subdivision | Bozeman, MT | 50 | 8 | - |
| Primo Water Dispenser Wal-Mart No 2147 | Oceanside, MT | 50 | 23 | - |
| Cobblestone Court | Great Falls, MT | 50 | 2 | - |
| Double Diamond Subdivision Arbor Hills | Billings, MT | 50 | 17 | - |
| Primo Refill Wal-Mart Num 2607 Polson | Oceanside, MT | 50 | 0 | - |
| Alpine Cabin - Bridger Bowl | Bozeman, MT | 50 | 3 | - |
| Town Pump Glendive Ll 2 | Butte, MT | 50 | 45 | - |
| Mountain Range RV Park | Columbus, MT | 50 | 22 | - |
| Hell Creek Marina | Jordan, MT | 50 | 68 | - |
| Holt Stage Hideaway | Kalispell, MT | 50 | 0 | - |
| Whitefish Hills Village | Columbia Falls, MT | 50 | 63 | - |
| Mission Mountain Mercantile | Condon, MT | 50 | 8 | - |
| Belgrade Commercial Park PWS | Belgrade, MT | 50 | 140 | - |
| Nws Arctic Mountain Winco Foods Helena | Salt Lake City, MT | 50 | 0 | - |
| Paul Bunyan Cabins & Resturant | Kalispell, MT | 50 | 17 | - |
| Silver Run School | Roberts, MT | 50 | 3 | - |
| Vwa Services | Bridger, MT | 50 | 0 | - |
| Trinity School District #4 in L & C Co | Canyon Creek, MT | 50 | 92 | - |
| Hilltop Water | Columbus, MT | 50 | 0 | - |
| Headwaters Picnic Area | Three Forks, MT | 50 | 85 | - |
| Corricks River Bend Fas | Missoula, MT | 50 | 5 | - |
| Greenough Lake Cg Well No 1 | Red Lodge, MT | 50 | 31 | - |
| Basin Campground | Red Lodge, MT | 50 | 66 | - |
| Spotted Bear Rs and Cg | Kalispell, MT | 50 | 44 | - |
| Devil Creek Campground | Kalispell, MT | 50 | 19 | - |
| Quartz Flat Campground | Superior, MT | 50 | 41 | - |
| Rexford Bench Campground | Eureka, MT | 50 | 28 | - |
| Western Bar | Augusta, MT | 49 | 91 | - |
| Overlook Subdivision | Polson, MT | 49 | 137 | - |
| Big Sky Business Center | Big Sky, MT | 49 | 51 | - |
| Wise River Ranger Station | Wise River, MT | 49 | 95 | - |
| Spruce Park Mobile Village | Billings, MT | 48 | 313 | - |
| Yellowtail Dam Powerplant and Visitor Ce | Yellowtail, MT | 48 | 73 | - |
| Northfork Tr CT Columbia Falls | Kalispell, MT | 48 | 44 | - |
| Spring Creek Colony Lewistown | Lewistown, MT | 48 | 235 | - |
| Morin Elementary School | Billings, MT | 48 | 52 | - |
| Grinell Estates HOA | Frenchtown, MT | 48 | 53 | - |
| Arrowhead Condominiums | Seeley Lake, MT | 48 | 23 | - |