Public Water Systems
2,005 active public water systems in ID, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| Veolia Water Idaho | Boise, ID | 264,978 | 240 | Clean |
| Meridian Water Dept | Meridian, ID | 147,340 | 64 | Detected |
| Nampa City Of | Nampa, ID | 100,200 | 262 | Clean |
| Caldwell City Of | Caldwell, ID | 74,000 | 518 | Clean |
| Idaho Falls City Of | Idaho Falls, ID | 69,450 | 144 | Clean |
| Pocatello City Of | Pocatello, ID | 58,231 | 961 | Clean |
| Twin Falls City Of | Twin Falls, ID | 56,121 | 164 | Clean |
| Coeur D Alene City Of | Coeur D Alene, ID | 54,115 | 90 | Clean |
| Rexburg City Of | Rexburg, ID | 40,462 | 116 | Clean |
| Kuna City Of | Kuna, ID | 32,038 | 554 | Clean |
| Moscow Water Dept | Moscow, ID | 26,000 | 73 | Clean |
| Falls Water Company Inc | Idaho Falls, ID | 22,650 | 196 | Clean |
| Post Falls City Of | Post Falls, ID | 20,285 | 658 | Clean |
| Lewiston Orchards Irrigation Dist | Lewiston, ID | 20,000 | 180 | Clean |
| Ammon City Of | Ammon, ID | 17,338 | 418 | Clean |
| Chubbuck City Of | Chubbuck, ID | 15,842 | 37 | Clean |
| Lewiston City Of | Lewiston, ID | 15,001 | 2 | Detected |
| Mountain Home, City Of | Mountain Home, ID | 14,651 | 249 | Clean |
| Star Sewer and Water Dist Water System | Star, ID | 14,000 | 30 | Clean |
| Middleton City Of | Middleton, ID | 13,190 | 81 | Clean |
| Jerome City Of | Jerome, ID | 13,135 | 30 | Clean |
| Garden City Water and Sewer System | Garden City, ID | 12,500 | 245 | Detected |
| Sandpoint Public Works Dept | Sandpoint, ID | 12,284 | 74 | Clean |
| Blackfoot City Of | Blackfoot, ID | 11,922 | 74 | Clean |
| East Greenacres Irrigation Dist | Post Falls, ID | 11,165 | 33 | Clean |
| Rathdrum City Of | Rathdrum, ID | 10,358 | 26 | Detected |
| Burley Water Dept | Burley, ID | 10,345 | 43 | Clean |
| Hayden Lake Irrigation Dist | Hayden, ID | 9,375 | 34 | Clean |
| Capitol Water Corp | Boise, ID | 9,000 | 113 | Detected |
| Ross Point Water Dist | Post Falls, ID | 8,965 | 7 | Clean |
| Avondale Irrigation Dist | Hayden, ID | 8,785 | 49 | Clean |
| University of Idaho | Moscow, ID | 8,589 | 6 | Clean |
| Payette City Of | Payette, ID | 8,127 | 93 | Detected |
| Hailey Water and Sewer | Hailey, ID | 8,000 | 89 | Clean |
| Mountain Home Air Force Base | Mountain Home Afb, ID | 7,500 | 574 | Detected |
| Fruitland City Of | Fruitland, ID | 7,135 | 197 | Clean |
| Emmett City Of | Emmett, ID | 6,700 | 290 | Clean |
| Eagle, City of (Western Zone) | Eagle, ID | 6,108 | 10 | Clean |
| Central Shoshone County Water Dist | Kellogg, ID | 6,098 | 183 | Clean |
| Rupert City Of | Rupert, ID | 5,796 | 156 | Clean |
| Weiser City Of | Weiser, ID | 5,630 | 76 | Clean |
| Preston City Of | Preston, ID | 5,591 | 149 | Clean |
| Rigby City Of | Rigby, ID | 5,400 | 88 | Clean |
| Kimberly City Of | Kimberly, ID | 5,359 | 48 | - |
| American Falls City Of | American Falls, ID | 4,863 | 215 | Clean |
| Buhl City Of | Buhl, ID | 4,518 | 117 | Clean |
| McCall City Of | McCall, ID | 4,423 | 205 | Clean |
| Shelley City Of | Shelley, ID | 4,409 | 33 | Detected |
| St Maries City Of | St Maries, ID | 4,173 | 28 | - |
| Hillside Service Area | Rathdrum, ID | 4,140 | 72 | - |
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