Idaho Drinking Water Violations
1,957Water Systems
41,576Total Violations
3,535Health-Based
Idaho has 1,957 active public water systems regulated under the EPA's Safe Drinking Water Act. Across these systems, there have been 3,535 health-based violations out of 41,576 total violations recorded. Currently, 62 water systems have unresolved health-based violations.
The most frequently cited health-based contaminants in Idaho are Unknown, Unknown, and Unknown. Health-based violations mean a water system exceeded an EPA maximum contaminant level (MCL) or failed required treatment standards.
Browse the counties below to find specific water systems, or search by address or ZIP code to find your water provider.
Counties
| County | Water Systems | Total Violations | Health-Based |
|---|---|---|---|
| Bonneville County | 36 | 254 | 47 |
| Ada County | 8 | 83 | 21 |
| Fremont County | 13 | 270 | 18 |
| Jefferson County | 15 | 166 | 11 |
| Valley County | 2 | 49 | 11 |
| Madison County | 5 | 45 | 10 |
| Teton County | 4 | 316 | 8 |
| Minidoka County | 3 | 59 | 8 |
| Canyon County | 8 | 57 | 8 |
| Custer County | 11 | 114 | 7 |
| Cassia County | 4 | 48 | 7 |
| Owyhee County | 2 | 23 | 6 |
| Elmore County | 2 | 21 | 6 |
| Twin Falls County | 5 | 81 | 5 |
| Boise County | 4 | 31 | 4 |
| Lemhi County | 7 | 29 | 4 |
| Bannock County | 2 | 1,322 | 3 |
| Gooding County | 2 | 41 | 2 |
| Blaine County | 2 | 26 | 2 |
| Bingham County | 2 | 8 | 2 |
| Clearwater County | 1 | 14 | 1 |
| Payette County | 2 | 39 | 0 |
| Latah County | 1 | 34 | 0 |
| Franklin County | 2 | 24 | 0 |
| Jerome County | 1 | 11 | 0 |
| Camas County | 1 | 9 | 0 |
| Gem County | 1 | 4 | 0 |
| Bear Lake County | 1 | 3 | 0 |
| Nez Perce County | 1 | 2 | 0 |
| Benewah County | 2 | 1 | 0 |