Idaho
Kootenai County drinking water quality
193 active public water systems serve 181,138 people in Kootenai County. 87 are compliant, 106 had at least one EPA violation in the past three years, 5 are designated serious violators, and 4 carry a health flag.
Needs attention
Community water systems
115 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Ridge at Sun UP Bay Water System |
55 | 1 | 0 | |
|
Valley CO OP Water Assn |
52 | 1 | 1 | |
|
Panhandle Mobile Home Park |
50 | 0 | 0 | |
|
Seasons Road Water Assn |
50 | 2 | 1 | |
|
Trails End Estates |
49 | 2 | 2 | |
|
Flying W Ranch |
46 | 0 | 0 | |
|
Rolling Meadows Ranch |
46 | 0 | 0 | |
|
Ranch Valley Water Assn |
45 | 0 | 0 | |
|
Singer Ranch Water System |
44 | 0 | 0 | |
|
Hidden Hill Mobile Home Park |
40 | 1 | 0 | |
|
Ashley Estates Water Assn |
38 | 1 | 0 | |
|
Fernan Estates Corporation |
37 | 2 | 0 | |
|
West Seasons Acres HOA |
31 | 0 | 0 | |
|
Prairie Water Assn |
30 | 0 | 0 | |
|
Lakeland Meadows |
25 | 0 | 0 |
Non-community systems (78: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
Inactive systems (167, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
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.