Idaho
Nez Perce County drinking water quality
25 active public water systems serve 39,959 people in Nez Perce County. 11 are compliant, 14 had at least one EPA violation in the past three years, 1 is a designated serious violator, and 0 carry a health flag.
Needs attention
Community water systems
12 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Lewiston Orchards Irrigation Dist |
20,000 | 0 | 0 | |
|
Lewiston City of |
15,001 | 3 | 0 | |
|
Red Pheasant Water Company LLC |
480 | 6 | 2 | |
|
Culdesac City of |
382 | 3 | 0 | |
|
Lapwai City of |
325 | 4 | 0 | |
|
Peck Water System |
196 | 2 | 0 | |
|
Cougar Ridge Water & Sewer |
173 | 1 | 0 | |
|
Eagles Pointe Subdivision |
154 | 0 | 0 | |
|
Waha Glen Water Dist |
100 | 0 | 0 | |
|
Eaton Mobile Home Court |
94 | 0 | 0 | |
|
Red Rock Water LLC |
60 | 5 | 1 | |
|
View Point Subdivision |
56 | 3 | 2 |
Non-community systems (13: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Clearwater Paper Corporation |
1,550 | 0 | 0 | |
|
Federal Cartridge Company |
765 | 0 | 0 | |
|
Rivaura Winery |
100 | 0 | 0 | |
|
Itd Lenore Rest Stop |
80 | 1 | 0 | |
|
Tammany Alternative Center |
80 | 2 | 1 | |
|
Nps Nez Perce National Historical Park |
75 | 0 | 0 | |
|
Atlas Sand and Rock INC Lewiston |
63 | 0 | 0 | |
|
Drovers Run at Jacques Spur |
60 | 1 | 1 | |
|
Lewiston Roundup |
50 | 2 | 1 | |
|
Western States Equipment |
35 | 0 | 0 | |
|
Canyon Inn |
30 | 4 | 0 | |
|
Blm McKays Bend Recreation Site |
25 | 1 | 0 | |
|
Itd Lewiston Hill Port of Entry |
25 | 0 | 0 |
Inactive systems (23, 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.