Water quality in El Rio, California
El Rio is in Ventura County. 95 active public water systems serve the county; 37 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Ventura County
67 systems, nearest firstNon-community systems in Ventura County (27: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Vineyard Mutual Water Company/industrial |
259 | 0 | 0 | |
|
Beedy Water Company, LLC |
35 | 0 | 0 | |
|
Rio School Dist/rio del Valle School |
820 | 0 | 0 | |
|
Rio Mesa High School/oxnard Uhs |
2,600 | 1 | 1 | |
|
Rio School Dist/ Rio Real School |
550 | 0 | 0 | |
|
Vulcan Materials Company Cal Mat |
30 | 1 | 1 | |
|
State Ready Mix, Inc. Ventura |
25 | 1 | 1 | |
|
Oxnard Pallet Company |
38 | 1 | 0 | |
|
Pyramid Flowers |
30 | 1 | 0 | |
|
Nishi Quality Flowers, Inc. |
92 | 1 | 1 | |
|
Glass House Camarillo Cultivation, LLC |
450 | 0 | 0 | |
|
GP Anacapa Foods, Llc. |
50 | 0 | 0 | |
|
Laguna Vista School/oceanview School Dis |
377 | 0 | 0 | |
|
Bouquet Multimedia |
100 | 0 | 0 | |
|
Santa Clara School |
39 | 0 | 0 | |
|
Thomas Aquinas College |
382 | 1 | 0 | |
|
Dennison Park |
102 | 1 | 0 | |
|
The Ranch at Live Oak |
82 | 1 | 1 | |
|
Ventura Farms |
100 | 0 | 0 | |
|
Foxfield Riding School |
120 | 0 | 0 | |
|
Usfs Wheeler Gorge Campground |
500 | 0 | 0 | |
|
Lake Piru Park Uwcd |
960 | 0 | 0 | |
|
Camp Scheideck |
33 | 1 | 1 | |
|
Smith Forks Water System |
3,000 | 1 | 0 | |
|
Usfs Chuchupate Ranger Station |
26 | 1 | 1 | |
|
Channel Islands National Park |
30 | 0 | 0 | |
|
Santa Clara Resources |
30 | 1 | 0 |
About this data
Water systems are matched to Ventura County, nearest to El Rio 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.