Idaho
Elmore County drinking water quality
46 active public water systems serve 26,926 people in Elmore County. 12 are compliant, 34 had at least one EPA violation in the past three years, 5 are designated serious violators, and 3 carry a health flag.
Needs attention
Community water systems
24 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Mountain Home, City of |
14,651 | 5 | 2 | |
|
Mountain Home Air Force Base |
7,500 | 4 | 0 | |
|
Glenns Ferry City of |
1,282 | 3 | 0 | |
|
Mellen Subd Water Dist |
250 | 6 | 1 | |
|
Trinity Estates Water Users Assn |
250 | 0 | 0 | |
|
Canyon Creek Mobile Home Park |
243 | 0 | 0 | |
|
Summerwind Water Users |
192 | 0 | 0 | |
|
Meadows Mobile Park |
175 | 3 | 1 | |
|
Sawtooth Estates Water Users |
175 | 0 | 0 | |
|
Blue Sage Subdivision |
112 | 0 | 0 | |
|
Simplot Livestock Company Grandview |
100 | 5 | 2 | |
|
Hamilton Place |
97 | 0 | 0 | |
|
Atlanta Water Assn |
91 | 1 | 1 | |
|
Splendid Acres Water Assn |
91 | 3 | 1 | |
|
King Hill Domestic Water and Sewer |
87 | 8 | 1 | |
|
Town and Country Water Users Assn |
86 | 4 | 2 | |
|
New Horizons Water INC |
85 | 4 | 2 | |
|
Pleasant Acres Mobile Home Park |
85 | 3 | 2 | |
|
Oakleaf Subdivision Mountain Home |
71 | 0 | 0 | |
|
Mountain Sage |
65 | 9 | 2 | |
|
Hammett Haven Apartments |
64 | 5 | 1 | |
|
Danskin Properties Association INC |
52 | 2 | 2 | |
|
Camas Estates Water Users |
50 | 1 | 1 | |
|
Silver Sage Real Property Owners Assn |
30 | 4 | 2 |
Non-community systems (22: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Lds Church Mountain Home Airbase Mountain Home |
150 | 2 | 1 | |
|
Elk Valley Resort |
100 | 1 | 1 | |
|
Trinity View Resort |
90 | 4 | 3 | |
|
Mountain Home Migrant Head Start |
78 | 1 | 0 | |
|
Tlk |
75 | 2 | 0 | |
|
Featherville Townsite Water Corp |
60 | 4 | 0 | |
|
Desert Winds Chevron |
50 | 0 | 0 | |
|
Key Mart Corner |
50 | 3 | 1 | |
|
Riverview Subd Water Assn |
45 | 2 | 0 | |
|
Paradise Homeowners Assn INC |
43 | 1 | 0 | |
|
Pine Resort |
26 | 2 | 0 | |
|
Shiok |
26 | 1 | 0 | |
|
Bakers Acres Association INC |
25 | 1 | 0 | |
|
CJ Strike North Park |
25 | 1 | 0 | |
|
Fall Creek Recreational Retreat |
25 | 0 | 0 | |
|
McGuires Subd |
25 | 0 | 0 | |
|
Mountain Home Afb CJ Strike Dam Rec Ctr |
25 | 0 | 0 | |
|
Nitz' Pine Store |
25 | 1 | 0 | |
|
Pacific Steel and Recycling #50 |
25 | 2 | 0 | |
|
South Fork Senior Center |
25 | 0 | 0 | |
|
Y-Stop General Store |
25 | 3 | 2 | |
|
Ballantyne Camp Subd 1 |
24 | 2 | 0 |
Inactive systems (97, 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. Retrieved from ECHO on Oct 11, 2026.