All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Rincon Water & Road Works Ventura County |
25 | 1 | 0 | |
|
Ripon Church of Christ San Joaquin County |
25 | 0 | 0 | |
|
River Mill, the San Joaquin County |
25 | 0 | 0 | |
|
River Road Plaza Stanislaus County |
25 | 0 | 0 | |
|
Riverfront Mutual Water Company Imperial County |
25 | 0 | 0 | |
|
Rmrc-Coy Flat Campground Tulare County |
25 | 0 | 0 | |
|
Roaring Camp Amador County |
25 | 0 | 0 | |
|
Roberts Ferry Nut Co, INC (ws) Stanislaus County |
25 | 0 | 0 | |
|
Rock Creek Lodge Mono County |
25 | 0 | 0 | |
|
Roederer Estate Winery Mendocino County |
25 | 0 | 0 | |
|
Rolling Oaks Road Association Sonoma County |
25 | 0 | 0 | |
|
Roth Winery Sonoma County |
25 | 0 | 0 | |
|
Route 66 Market San Bernardino County |
25 | 0 | 0 | |
|
Royal Carrizo HOA Riverside County |
25 | 1 | 1 | |
|
Rrg Garden Farming Operations Yolo County |
25 | 0 | 0 | |
|
RS Utilities Water System Bakersfield · Kern County |
25 | 0 | 0 | |
|
Rustic Bar-B-Q Yolo County |
25 | 0 | 0 | |
|
Saints Peter & Paul Russian Church Sonoma County |
25 | 0 | 0 | |
|
Salida Hulling Association Water System Stanislaus County |
25 | 0 | 0 | |
|
Salmon Lake Lodge Sierra County |
25 | 0 | 0 | |
|
San Benito County Historical Park San Benito County |
25 | 1 | 0 | |
|
San Joaquin Valley National Cemetery Merced County |
25 | 0 | 0 | |
|
San Paso Truck Stop San Luis Obispo County |
25 | 1 | 0 | |
|
San-I-Pak INC San Joaquin County |
25 | 1 | 0 | |
|
Sanctuary Bible Church WS Monterey County |
25 | 0 | 0 | |
|
Sand Flat # 1 Alpine County |
25 | 0 | 0 | |
|
Sand Flat # 3 Alpine County |
25 | 0 | 0 | |
|
Sand Flat # 4 Alpine County |
25 | 0 | 0 | |
|
Sand Flat # 5 Alpine County |
25 | 0 | 0 | |
|
Santa Rosa Springs Riverside County |
25 | 0 | 0 | |
|
Santa Ynez Roblar Mobile Home Park Santa Barbara County |
25 | 4 | 0 | |
|
Scc Animal Shelter/airport Santa Clara County |
25 | 0 | 0 | |
|
Schmitz Wines Amador County |
25 | 0 | 0 | |
|
Sendero Ranch Plumas County |
25 | 0 | 0 | |
|
Sequoia Coffee & Kitchen Tulare County |
25 | 0 | 0 | |
|
Sequoia Grove Vineyards Napa County |
25 | 1 | 1 | |
|
Sera Fina Cellars Amador County |
25 | 0 | 0 | |
|
Shaver Lake Heights Water Assn Fresno County |
25 | 0 | 0 | |
|
Shell Building Mendocino County |
25 | 0 | 0 | |
|
Shop N GO Tulare County |
25 | 0 | 0 | |
|
Shop-N-Quick #2 Fresno County |
25 | 1 | 0 | |
|
Sierra Business Park Owner's Association Mono County |
25 | 0 | 0 | |
|
Sierra Inn Fresno County |
25 | 1 | 0 | |
|
Sierra Pines Resort Sierra County |
25 | 0 | 0 | |
|
Sierra Valley Preserve Portola · Plumas County |
25 | 0 | 0 | |
|
Signorello Winery Napa County |
25 | 0 | 0 | |
|
Silenus Vintners Napa County |
25 | 1 | 0 | |
|
Silverfork School El Dorado County |
25 | 8 | 0 | |
|
Silverfork Water Association El Dorado County |
25 | 0 | 0 | |
|
Silvertip Springs Water System Plumas County |
25 | 0 | 0 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules currently in violation at EPA's latest data refresh.
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.