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 |
| Hoo Doo Harvard Water and Sewer Dist | Harvard, ID | 82 | 217 | - |
| Little Rascals Learning Center | Emmett, ID | 82 | 4 | - |
| Swan Valley Elementary | Irwin, ID | 82 | 42 | - |
| Sienna Ridge Estates | Anderson, ID | 81 | 19 | - |
| Stonegate 2 Subdivision | Island Park, ID | 81 | 0 | - |
| Schneiders Subd | Nordman, ID | 80 | 17 | - |
| Beaver Creek Camp Assn | Moscow, ID | 80 | 15 | - |
| Moravia Water Assn | Bonners Ferry, ID | 80 | 68 | - |
| Bloomsburg Trailer Park | Worley, ID | 80 | 18 | - |
| Morrison Estates Homeowner Water Assn | Coeur D Alene, ID | 80 | 30 | - |
| Silver Beach Resort | Spokane Valley, ID | 80 | 7 | - |
| Calder Water and Sewer District | Calder, ID | 80 | 27 | - |
| Weir Gulch Water Assn | Pinehurst, ID | 80 | 7 | - |
| Clearwater Water Dist | Clearwater, ID | 80 | 1,066 | - |
| Lochsa Lodge | Lolo, ID | 80 | 16 | - |
| Wilderness Inn | Kooskia, ID | 80 | 22 | - |
| Lenore Rest Stop Itd | Lewiston, ID | 80 | 5 | - |
| Tammany Alternative Center | Lewiston, ID | 80 | 93 | - |
| Tamarack Mills LLC Dba Evergreen Forests | New Meadows, ID | 80 | 25 | - |
| Syngenta Seeds Inc | Nampa, ID | 80 | 14 | - |
| Paradise Point | Boise, ID | 80 | 88 | - |
| Camp Perkins Lutheran Outdoor Ministries | Ketchum, ID | 80 | 34 | - |
| Malta SR Seminary | Twin Falls, ID | 80 | 34 | - |
| Lava Campground | Lava Hot Springs, ID | 80 | 0 | - |
| Hillview Extended Stay | American Falls, ID | 80 | 51 | - |
| Lakeview Homeowners Assn Inc | Firth, ID | 80 | 65 | - |
| Shady Rest RV Park and Campground | Castaic, ID | 80 | 71 | - |
| Rigby Air Village LLC | Idaho Falls, ID | 80 | 41 | - |
| Ups - Rexburg (Idrex) | Meridian, ID | 80 | 2 | - |
| Viola Water and Sewer Dist | Viola, ID | 78 | 14 | - |
| Westview Shervik Subd | Nampa, ID | 78 | 60 | - |
| Hope House (Owyhee) | Marsing, ID | 78 | 70 | - |
| Garden Valley Ranchettes Homeowners | Garden Valley, ID | 78 | 213 | - |
| Mountain Home Migrant Head Start | Mountain Home, ID | 78 | 73 | - |
| Usfs Easley Campground | Jerome, ID | 78 | 16 | - |
| Elk Creek Estates | Plain City, ID | 78 | 11 | - |
| Hern Water System | Coeur D Alene, ID | 77 | 26 | - |
| Portneuf Bend Campground | Evanston, ID | 76 | 14 | - |
| Priest Lake Marina | Priest Lake, ID | 75 | 38 | - |
| Usfs Kalispell Bay Boat Launch | Sandpoint, ID | 75 | 11 | - |
| Rara Corp | Oldtown, ID | 75 | 72 | - |
| Pend Oreille Shores Resort Homeowners | Hope, ID | 75 | 28 | - |
| Priest Lake Elementary School | Priest River, ID | 75 | 49 | - |
| Dry Acres Water and Sewer Dist | Rathdrum, ID | 75 | 25 | - |
| Black Rock Marina Inc | Hayden, ID | 75 | 53 | - |
| Blm Huckleberry Campground | Coeur D Alene, ID | 75 | 3 | - |
| Blm Slate Creek Rest Area | Cottonwood, ID | 75 | 12 | - |
| Usfs Wilderness Gateway Campground | Kamiah, ID | 75 | 10 | - |
| Usfs Pittsburg Landing Campground | Clarkston, ID | 75 | 22 | - |
| Tamarack Family Dining | Deary, ID | 75 | 55 | - |