Montana Drinking Water Violations
2,247Water Systems
37,408Total Violations
2,304Health-Based
| County | Water Systems | Total Violations | Health-Based |
|---|---|---|---|
| Lewis and Clark | 162 | 3,805 | 209 |
| Fergus | 20 | 656 | 198 |
| Gallatin | 205 | 4,607 | 180 |
| Missoula | 243 | 2,333 | 163 |
| Yellowstone | 116 | 1,584 | 151 |
| Jefferson | 42 | 625 | 149 |
| Beaverhead | 48 | 832 | 133 |
| Blaine | 12 | 473 | 95 |
| Flathead | 321 | 2,582 | 79 |
| Cascade | 98 | 2,132 | 79 |
| Ravalli | 129 | 1,227 | 75 |
| Rosebud | 15 | 412 | 71 |
| Lake | 90 | 786 | 59 |
| Lincoln | 89 | 1,034 | 57 |
| Liberty | 8 | 152 | 53 |
| Park | 58 | 1,344 | 48 |
| Stillwater | 31 | 578 | 37 |
| Richland | 15 | 519 | 35 |
| Sweet Grass | 15 | 136 | 33 |
| Dawson | 32 | 1,351 | 31 |
| Granite | 20 | 344 | 30 |
| Teton | 16 | 394 | 27 |
| Madison | 45 | 870 | 26 |
| Sanders | 43 | 446 | 24 |
| Custer | 11 | 77 | 23 |
| Carbon | 35 | 961 | 20 |
| Toole | 17 | 355 | 20 |
| Pondera | 12 | 175 | 20 |
| Treasure | 3 | 118 | 19 |
| Hill | 16 | 372 | 17 |
| Valley | 13 | 480 | 15 |
| Chouteau | 12 | 409 | 14 |
| Big Horn | 23 | 544 | 11 |
| Glacier | 26 | 315 | 9 |
| Mineral | 35 | 165 | 9 |
| Powell | 16 | 126 | 9 |
| Golden Valley | 4 | 93 | 9 |
| Broadwater | 20 | 358 | 8 |
| Sheridan | 8 | 157 | 8 |
| Powder River | 3 | 33 | 8 |
| Silver Bow | 23 | 312 | 7 |
| Daniels | 2 | 60 | 7 |
| Garfield | 5 | 262 | 4 |
| Deer Lodge | 15 | 236 | 4 |
| Meagher | 8 | 236 | 4 |
| Wibaux | 2 | 54 | 4 |
| Phillips | 12 | 929 | 3 |
| Mccone | 7 | 177 | 3 |
| Carter | 5 | 57 | 2 |
| Prairie | 7 | 468 | 1 |
| Fallon | 4 | 207 | 1 |
| Judith Basin | 8 | 99 | 1 |
| Wheatland | 8 | 74 | 1 |
| Roosevelt | 4 | 34 | 1 |
| Petroleum | 1 | 138 | 0 |
| Musselshell | 8 | 53 | 0 |
| Gallatin,madison | 1 | 52 | 0 |