California
Plumas County drinking water quality
111 active public water systems serve 24,808 people in Plumas County. 80 are compliant, 31 had at least one EPA violation in the past three years, 0 are designated serious violators, and 10 carry a health flag.
Needs attention
Community water systems
27 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
American Valley Csd |
3,778 | 1 | 1 | |
|
Chester Public U.d. |
2,187 | 0 | 0 | |
|
City of Portola Portola |
2,100 | 0 | 0 | |
|
Hamilton Branch Csd |
1,874 | 1 | 0 | |
|
West Almanor M.w.c. |
1,464 | 0 | 0 | |
|
Ivcsd-Greenville |
795 | 0 | 0 | |
|
Graeagle Water Company |
737 | 0 | 0 | |
|
Grizzly Lake Csd-Delleker |
657 | 2 | 0 | |
|
Whitehawk Ranch Mwc |
540 | 1 | 0 | |
|
Lake Almanor Country Club Mwc |
500 | 1 | 1 | |
|
Plumas Eureka Csd |
334 | 0 | 0 | |
|
Greenhorn Creek Csd |
280 | 0 | 0 | |
|
Grizzly Lake Csd-Crocker/welch |
215 | 2 | 0 | |
|
Ivcsd Crescent Mills |
206 | 0 | 0 | |
|
Blairsden Water Users Assn |
200 | 1 | 1 | |
|
Walker Ranch Csd |
150 | 0 | 0 | |
|
Grizzly Ranch Csd |
118 | 0 | 0 | |
|
Gold Mountain Csd |
106 | 1 | 1 | |
|
Clio Public Utility District |
79 | 1 | 1 | |
|
Valivu Estates MHP |
54 | 1 | 1 | |
|
Feather River RV & MHP |
53 | 1 | 1 | |
|
Meadow Edge MHP |
53 | 1 | 1 | |
|
Greenhaven HOA |
38 | 0 | 0 | |
|
Arlington Heights MHP |
33 | 0 | 0 | |
|
Frccsd Old Mill Ranch |
32 | 1 | 1 | |
|
Evergreen Motel & MHP |
28 | 0 | 0 | |
|
Frccsd Hot Springs |
25 | 1 | 0 |
Non-community systems (84: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
Inactive systems (129, 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 California 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.