Radium-228 violations in Idaho
25 active public water systems in Idaho had a Radium-228 violation in the past three years, 3 of them in the latest quarter of EPA's data. What Radium-228 is and why it matters.
Systems with a Radium-228 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 | |
|
Purple Sage Community Canyon County |
98 | 3 | 0 | |
|
Falls Water Company INC Bonneville County |
22,650 | 3 | 0 | |
|
Sun Valley Water and Sewer Dist Blaine County |
3,400 | 4 | 1 | |
|
Comore Loma Bonneville County |
1,626 | 1 | 0 | |
|
Troy City of Latah County |
850 | 4 | 0 | |
|
Juliaetta City of Latah County |
624 | 4 | 1 | |
|
Wilderness Ranch Owners Association INC Boise County |
525 | 3 | 1 | |
|
Terrace Lakes Water Company Boise County |
475 | 6 | 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 | |
|
Golf Club Estates Water INC Bonner County |
140 | 3 | 0 | |
|
White Bird City of Idaho County |
125 | 6 | 1 | |
|
Highway 54 Water Association, INC Kootenai County |
100 | 2 | 0 | |
|
King Hill Domestic Water and Sewer Elmore County |
87 | 8 | 1 | |
|
Horizon Ridge Subdivision Canyon County |
75 | 2 | 0 | |
|
Mountain Sage Elmore County |
65 | 9 | 2 | |
|
Cedar Point Subdivision Bingham County |
63 | 7 | 3 | |
|
SM Utilities Kootenai County |
58 | 2 | 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 |
About this data
A system is counted once if any of its violations in the past three years involved Radium-228, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Radium-228 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.