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 |
|---|---|---|---|---|
| Corvallis Gym and Middle School | Corvallis, MT | 900 | 6 | - |
| Pioneer Water Service | Billings, MT | 900 | 42 | - |
| Hardin Eastbound Rest Area | Billings, MT | 877 | 112 | - |
| Chester Town Of | Chester, MT | 870 | 25 | - |
| Darby Town Of | Darby, MT | 850 | 639 | - |
| Christian Life Center | Missoula, MT | 846 | 165 | - |
| Valley Grove Subdivision | Belgrade, MT | 825 | 148 | - |
| Harlem City Of | Harlem, MT | 820 | 561 | - |
| Oles Country Store | Stevensville, MT | 820 | 37 | - |
| Thriftway Super Stop #8 Bozeman | Butte, MT | 817 | 290 | - |
| Phantom Hills Water System | Missoula, MT | 810 | 91 | Clean |
| Dearborn N Craig Rest Stop | Great Falls, MT | 808 | 31 | - |
| Frenchies Super Stop | Missoula, MT | 808 | 16 | - |
| Bears Country Store | Libby, MT | 805 | 186 | - |
| Worden Ballantine Yellowstone | Fort Smith, MT | 800 | 403 | - |
| Meadowlark of Billings LLC | Orem, MT | 800 | 52 | - |
| Columbus Rest Area Eastbound | Billings, MT | 800 | 96 | - |
| Emigrant Rest Stop | Bozeman, MT | 800 | 35 | - |
| Columbus Rest Area Westbound | Billings, MT | 800 | 78 | - |
| Pinesdale Town Of | Pinesdale, MT | 800 | 978 | Clean |
| Shepherd Schools | Shepherd, MT | 800 | 42 | - |
| Jefferson Hills Wua | Helena, MT | 780 | 170 | - |
| Golden Meadows Subdivision | Orem, MT | 772 | 2 | - |
| Big Sky Food and Fuel Inc | East Helena, MT | 770 | 31 | - |
| Somers Co Water and Sewer Dist | Somers, MT | 765 | 26 | - |
| Glacier Park Inc | East Glacier Park, MT | 765 | 4 | - |
| Town Pump Gore Hill | Butte, MT | 760 | 145 | - |
| Caseys Corner 9 | Miami, MT | 759 | 131 | - |
| Bridger Town Of | Bridger, MT | 750 | 106 | - |
| Tiber County Water District | Brady, MT | 750 | 555 | - |
| Fisher Water Service | Billings, MT | 750 | 75 | - |
| Ten Mile and Pleasant Valley Wua | Helena, MT | 750 | 460 | - |
| Landmark Subdivision | Bozeman, MT | 750 | 17 | - |
| Town Pump Lolo 1 | Butte, MT | 744 | 41 | - |
| Town Pump Belgrade 4 | Butte, MT | 730 | 129 | - |
| West Gate KOA Cg | West Yellowstone, MT | 722 | 32 | - |
| Montana State Hospital Complex | Warm Springs, MT | 721 | 27 | - |
| Fairfield Town Of | Fairfield, MT | 718 | 368 | Clean |
| Hardin Westbound Rest Area | Billings, MT | 715 | 33 | - |
| North Star PUD | Helena, MT | 715 | 100 | - |
| Culbertson Town Of | Culbertson, MT | 714 | 39 | - |
| Travois Village Mobile Park | Missoula, MT | 702 | 47 | - |
| Lost Trail Rest Area | Missoula, MT | 701 | 40 | - |
| Gardiner Park Co Water Dist | Gardiner, MT | 700 | 151 | - |
| St Ignatius Town Of | St Ignatius, MT | 700 | 168 | - |
| Frenchtown Elementary School Dist 40 | Frenchtown, MT | 700 | 17 | - |
| Easthaven Baptist Church | Kalispell, MT | 700 | 10 | - |
| Lost Trail Powder Mtn Sula | Conner, MT | 690 | 61 | - |
| Woods Bay Water and Sewer District | Bigfork, MT | 685 | 106 | - |
| Elk Grove Water | Bozeman, MT | 672 | 16 | - |