Water quality in Colusa, California
Colusa is in Colusa County. 28 active public water systems serve the county; 3 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Colusa County
8 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| City of Colusa Colusa |
6,675 | 0 | 5.1 mi | |
| Colusa Co. Wwd #2 Princeton |
382 | 0 | 8.6 mi | |
| Maxwell Public Utility District |
1,175 | 1 | 10.6 mi | |
| City of Williams Williams |
5,538 | 0 | 11.9 mi | |
| Colusa Co. Wwd #1 Grimes |
512 | 2 | 15.2 mi | |
| Arbuckle Public Utility District |
3,251 | 2 | 18.4 mi | |
| Del Oro WC Arbuckle District |
185 | 0 | 19.3 mi | |
| Colusa Co. Service Area #2-Stonyford |
160 | 0 | 30.2 mi |
Non-community systems in Colusa County (19: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Colusa Landing |
168 | 0 | 0 | |
|
Terhel Farms Trailer Park 02 Colusa |
26 | 0 | 0 | |
|
Colusa Industrial Properties |
533 | 0 | 0 | |
|
Terhel Farms Trailer Park 01 |
26 | 0 | 0 | |
|
Richmond Hunting Club-Maxwell |
40 | 0 | 0 | |
|
Highway 20 Trailer Park |
63 | 0 | 0 | |
|
Caltrans-Maxwell Reststops |
15,000 | 0 | 0 | |
|
Willow Creek M.w.c.-Lambertville |
31 | 0 | 0 | |
|
Kingdom Hall of Jehovah's Witness-Wms |
26 | 0 | 0 | |
|
Morning Star Pkg. Co.-Wms. |
30 | 0 | 0 | |
|
Adm Rice Inc. |
91 | 0 | 0 | |
|
Grimes Boat Landing |
50 | 0 | 0 | |
|
T&p Farms |
25 | 0 | 0 | |
|
Arbuckle Golf Club |
126 | 0 | 0 | |
|
Sun Valley Rice Company |
104 | 0 | 0 | |
|
Adam's Vegetable Oils |
97 | 0 | 0 | |
|
Wilbur Hot Springs |
97 | 0 | 0 | |
|
Menf-Fouts Springs CG |
531 | 0 | 0 | |
|
Menf-Letts Lake CG |
118 | 0 | 0 |
About this data
Water systems are matched to Colusa County, nearest to Colusa first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
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.