All water systems in Idaho
2,020 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Silverwood Kootenai County |
3,930 | 2 | 1 | |
|
Gooding City of Gooding County |
3,706 | 1 | 1 | |
|
Eagle, City of (eastern Zone) Ada County |
3,702 | 0 | 0 | |
|
ST Anthony Fremont County |
3,606 | 1 | 0 | |
|
Ketchum City of Blaine County |
3,555 | 3 | 0 | |
|
Rimrock Service Area Kootenai County |
3,493 | 0 | 0 | |
|
Sun Valley Water and Sewer Dist Blaine County |
3,400 | 4 | 1 | |
|
Bonners Ferry City of Boundary County |
3,367 | 0 | 0 | |
|
Idoc Sbx Complex Ada County |
3,309 | 2 | 2 | |
|
Schweitzer Mountain Resort Bonner County |
3,301 | 4 | 0 | |
|
Homedale City of Owyhee County |
3,300 | 0 | 0 | |
|
Coeur D'alene Casino Worley · County |
3,250 | 2 | 0 | |
|
Salmon City of Lemhi County |
3,158 | 2 | 1 | |
|
Grangeville Water Dept Idaho County |
3,151 | 4 | 0 | |
|
Soda Springs City of Caribou County |
3,111 | 0 | 0 | |
|
Heyburn City of Minidoka County |
3,000 | 0 | 0 | |
|
Wendell City of Gooding County |
3,000 | 0 | 0 | |
|
Filer Water Works Twin Falls County |
2,858 | 2 | 0 | |
|
Fort Hall Fort Hall · County |
2,850 | 8 | 2 | |
|
Spirit Lake City of Kootenai County |
2,825 | 0 | 0 | |
|
Montpelier City of Bear Lake County |
2,772 | 2 | 1 | |
|
Bellevue City of Blaine County |
2,747 | 4 | 1 | |
|
Iona Water Dept Bonneville County |
2,717 | 0 | 0 | |
|
Three Mile Water Dist Boundary County |
2,652 | 2 | 2 | |
|
Dalton Water Assn INC Kootenai County |
2,602 | 0 | 0 | |
|
Orofino City of Clearwater County |
2,459 | 1 | 1 | |
|
Sugar City City of Madison County |
2,395 | 1 | 0 | |
|
E Shoshone County Water Dist Wallace Shoshone County |
2,388 | 0 | 0 | |
|
Victor City of Teton County |
2,361 | 0 | 0 | |
|
Cabinet Mountains Water Dist Boundary County |
2,335 | 0 | 0 | |
|
Parma City of Canyon County |
2,250 | 1 | 0 | |
|
Idoc Idaho State Correctional Center Ada County |
2,204 | 3 | 1 | |
|
Driggs City of Teton County |
2,200 | 2 | 1 | |
|
Malad City of Oneida County |
2,200 | 0 | 0 | |
|
Priest River City of Bonner County |
2,173 | 1 | 0 | |
|
Aberdeen City of Bingham County |
2,088 | 0 | 0 | |
|
Inl Nrf Butte County |
2,035 | 0 | 0 | |
|
Twin Lakes Service Area Kootenai County |
2,023 | 0 | 0 | |
|
Idpr Farragut State Park Kootenai County |
2,000 | 1 | 0 | |
|
Riverside Water and Sewer District Clearwater County |
2,000 | 1 | 0 | |
|
Pinehurst Water Dist Shoshone County |
1,950 | 0 | 0 | |
|
Wilder City of Canyon County |
1,690 | 1 | 1 | |
|
Dry Creek Water Company LLC Ada County |
1,658 | 1 | 1 | |
|
Shoshone Water Works Lincoln County |
1,653 | 0 | 0 | |
|
Comore Loma Bonneville County |
1,626 | 1 | 0 | |
|
New Plymouth City of Payette County |
1,600 | 1 | 1 | |
|
Hauser Lake Water Assn INC Kootenai County |
1,575 | 1 | 1 | |
|
Clearwater Paper Corporation Nez Perce County |
1,550 | 0 | 0 | |
|
Oden Water Assn INC Bonner County |
1,524 | 1 | 1 | |
|
Itd Snake River View Rest Area Payette County |
1,500 | 2 | 0 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules currently in violation at EPA's latest data refresh.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Idaho records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.