Gross Alpha, Excl. Radon and U violations in Idaho
30 active public water systems in Idaho had a Gross Alpha, Excl. Radon and U violation in the past three years, 3 of them in the latest quarter of EPA's data. What Gross Alpha, Excl. Radon and U is and why it matters.
Systems with a Gross Alpha, Excl. Radon and U violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Lewiston City of Nez Perce County |
15,001 | 3 | 0 | |
|
Drake Subd Canyon County |
150 | 9 | 3 | |
|
M and M Mountain View Subd EM2 Canyon County |
54 | 1 | 0 | |
|
Falls Water Company INC Bonneville County |
22,650 | 3 | 0 | |
|
Sun Valley Water and Sewer Dist Blaine County |
3,400 | 4 | 1 | |
|
Grangeville Water Dept Idaho County |
3,151 | 4 | 0 | |
|
Troy City of Latah County |
850 | 4 | 0 | |
|
Kootenai County Water Dist 1 Kootenai County |
843 | 6 | 3 | |
|
Juliaetta City of Latah County |
624 | 4 | 1 | |
|
Wilderness Ranch Owners Association INC Boise County |
525 | 3 | 1 | |
|
Bia North Idaho Lapwai · County |
490 | 5 | 0 | |
|
Idjc Juvenile Corrections Center Fremont County |
280 | 4 | 1 | |
|
Bennington Water System Bear Lake County |
250 | 9 | 3 | |
|
Mellen Subd Water Dist Elmore County |
250 | 6 | 1 | |
|
Paul Housing Authority Minidoka County |
250 | 4 | 1 | |
|
Dufort Water Association Bonner County |
216 | 3 | 0 | |
|
White Bird City of Idaho County |
125 | 6 | 1 | |
|
Preston Eastside Water CO Franklin County |
120 | 10 | 3 | |
|
Simplot Livestock Company Grandview Elmore County |
100 | 5 | 2 | |
|
King Hill Domestic Water and Sewer Elmore County |
87 | 8 | 1 | |
|
Horizon Ridge Subdivision Canyon County |
75 | 2 | 0 | |
|
Huetter City of Kootenai County |
70 | 5 | 2 | |
|
Mountain Sage Elmore County |
65 | 9 | 2 | |
|
Cedar Point Subdivision Bingham County |
63 | 7 | 3 | |
|
SM Utilities Kootenai County |
58 | 2 | 0 | |
|
Northstar Subdivision Canyon County |
50 | 4 | 0 | |
|
Sunnyside Park Clearwater County |
40 | 7 | 2 | |
|
Murray Water Assn INC Shoshone County |
35 | 5 | 0 | |
|
Riverview Acres Water Assn 1 Bingham County |
33 | 2 | 0 | |
|
Wild Meadows I Subd Bonner County |
27 | 5 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Gross Alpha, Excl. Radon and U, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Gross Alpha, Excl. Radon and U alone.
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.