Groundwater Rule (GWR) violations in Idaho
107 active public water systems in Idaho had a Groundwater Rule (GWR) violation in the past three years, 95 of them in the latest quarter of EPA's data. What Groundwater Rule (GWR) is and why it matters.
Systems with a Groundwater Rule (GWR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Lake Forest Homes Assn INC Kootenai County |
98 | 3 | 0 | |
|
Country Court Community Idaho County |
89 | 4 | 0 | |
|
Hoo Doo Harvard Water and Sewer Dist Latah County |
82 | 5 | 1 | |
|
Greenhorn Subd Blaine County |
75 | 5 | 1 | |
|
Red Rock Water LLC Nez Perce County |
60 | 5 | 1 | |
|
Sawtelle Mountain Resort Fremont County |
50 | 3 | 0 | |
|
Subway @ Island Park Island Park · Fremont County |
25 | 4 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Groundwater Rule (GWR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Groundwater Rule (GWR) 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.