All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Cal Fire Salt Creek Conservation Camp Tehama County |
130 | 0 | 0 | |
|
Calipaso Winery Cayucos · San Luis Obispo County |
130 | 0 | 0 | |
|
Csp-Jack London State Historic Park Sonoma County |
130 | 0 | 0 | |
|
Fish Lake CG Srnf Humboldt County |
130 | 0 | 0 | |
|
Grant Lake Marina Mono County |
130 | 0 | 0 | |
|
Jardines del Valle Santa Cruz County |
130 | 0 | 0 | |
|
Minturn Nut Co., Inc. Merced County |
130 | 0 | 0 | |
|
Mobile Villas Trailer Park San Joaquin County |
130 | 0 | 0 | |
|
Norcal Adventure Area Yuba County |
130 | 0 | 0 | |
|
Oak Glen Domestic Water San Bernardino County |
130 | 1 | 1 | |
|
Old River Mutual Water Company Kern County |
130 | 3 | 0 | |
|
Quail Canyon Sea Los Angeles County |
130 | 0 | 0 | |
|
Rio Bend RV Golf Resort & Storm Crossing Imperial County |
130 | 3 | 2 | |
|
River Oaks Golf Club Sutter County |
130 | 0 | 0 | |
|
Rocky Comfort Mutual Water CO San Bernardino County |
130 | 1 | 0 | |
|
Roseland Mobile Home Park Sonoma County |
130 | 0 | 0 | |
|
Salyer Heights W.s., INC Trinity County |
130 | 1 | 1 | |
|
Skp Park of the Sierras INC Madera County |
130 | 1 | 0 | |
|
ST Anthony Retreat Center Tulare County |
130 | 1 | 0 | |
|
Sunview Cold Storage Water System Kern County |
130 | 0 | 0 | |
|
Syar Industries Napa County |
130 | 0 | 0 | |
|
Teen Challenge Tulare County |
130 | 0 | 0 | |
|
Tracy Matrl Recvry/sld Waste WS San Joaquin County |
130 | 0 | 0 | |
|
Trinidad Extended Stay RV Humboldt County |
130 | 1 | 0 | |
|
Triple S Ranch Sonoma County |
130 | 0 | 0 | |
|
Ventura Coastal, LLC Tipton Division Tulare County |
130 | 2 | 1 | |
|
Wildland Training Center Kern County |
130 | 0 | 0 | |
|
Wilton Bible Church Sacramento County |
130 | 2 | 1 | |
|
Yosemite Terrace Estates Mariposa County |
130 | 2 | 1 | |
|
Coastlands Mws (post Creek) Monterey County |
129 | 1 | 1 | |
|
End-O-Valley Mutual Water Company Sonoma County |
129 | 1 | 0 | |
|
Greene Acres Prop. O.a. Sierra County |
129 | 0 | 0 | |
|
Kings Inn Motel Tulare County |
129 | 0 | 0 | |
|
Maverik Fueling Station Riverside · Riverside County |
129 | 0 | 0 | |
|
Rancho Ynecita Santa Barbara County |
129 | 0 | 0 | |
|
Sierra Twain Harte MHP Tuolumne County |
129 | 1 | 0 | |
|
Trillium Cafe and Inn Mendocino County |
129 | 0 | 0 | |
|
Valley Creek MHP WS Monterey County |
129 | 1 | 0 | |
|
Camp EL Camino Pines Kern County |
128 | 0 | 0 | |
|
Encinal Elementary School Sutter County |
128 | 0 | 0 | |
|
Ledson Winery and Vineyards Sonoma County |
128 | 0 | 0 | |
|
Milat Winery Napa County |
128 | 0 | 0 | |
|
Olivarez Honey Bees Orland · Glenn County |
128 | 0 | 0 | |
|
California Vipassana Center Madera County |
127 | 0 | 0 | |
|
Duncans Mills Camping Club Sonoma County |
127 | 0 | 0 | |
|
Lakeside Sd-Lakeside School Santa Clara County |
127 | 1 | 0 | |
|
Topaz Lake RV Park Mono County |
127 | 0 | 0 | |
|
Ancient Redwoods Resort Humboldt County |
126 | 0 | 0 | |
|
Arbuckle Golf Club Colusa County |
126 | 0 | 0 | |
|
Assisi Mwc Monterey County |
126 | 1 | 1 |
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.