California
Modoc County drinking water quality
16 active public water systems serve 5,067 people in Modoc County. 11 are compliant, 5 had at least one EPA violation in the past three years, 0 are designated serious violators, and 3 carry a health flag.
Needs attention
Community water systems
5 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
City of Alturas Alturas |
2,715 | 1 | 1 | |
|
Newell County Water District |
629 | 2 | 1 | |
|
Cedarville County Water Dist. |
600 | 0 | 0 | |
|
California Pines C.s.d. |
431 | 1 | 1 | |
|
Isot Community Water System |
60 | 0 | 0 |
Non-community systems (11: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Mdf-Blue Lake CG |
200 | 1 | 0 | |
|
Cal Fire-Devil's Garden Camp |
120 | 0 | 0 | |
|
Modoc Medical Center Canby Clinic |
54 | 0 | 0 | |
|
Modoc Vineyard Academy |
53 | 1 | 0 | |
|
Mdf-Adin Ranger Station |
50 | 0 | 0 | |
|
Sully's RV Park |
30 | 0 | 0 | |
|
Adin Supply Co. |
25 | 0 | 0 | |
|
Arrowhead Golf Course |
25 | 0 | 0 | |
|
Fort Bidwell Hotel |
25 | 0 | 0 | |
|
Likely Place Golf and RV Resort |
25 | 0 | 0 | |
|
The Oney Frosty in Town |
25 | 0 | 0 |
Inactive systems (118, 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.