All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Imerys Filtration Minerals, INC Santa Barbara County |
200 | 1 | 0 | |
|
Improvement District No. 1 Tulare County |
200 | 1 | 0 | |
|
Jack Ready Imagination Park Cayucos · San Luis Obispo County |
200 | 0 | 0 | |
|
Jehovah's Witnesses Southport Yolo County |
200 | 1 | 0 | |
|
Johnson's Beach Resort Sonoma County |
200 | 0 | 0 | |
|
Kane Ranch Water Association Madera County |
200 | 0 | 0 | |
|
Kidder Creek Orchard Camp Siskiyou County |
200 | 0 | 0 | |
|
King Island Trailer Park Water System San Joaquin County |
200 | 0 | 0 | |
|
Kings River Golf Course Tulare County |
200 | 0 | 0 | |
|
Klamath Camper Corral Del Norte County |
200 | 0 | 0 | |
|
Lake California Poa R.v. Park Tehama County |
200 | 0 | 0 | |
|
Lake Hemet Mwd-Camp Ground Riverside County |
200 | 0 | 0 | |
|
Las Positas Mutual Water Company Santa Barbara County |
200 | 0 | 0 | |
|
Legacy Baptist Church Sutter County |
200 | 0 | 0 | |
|
Live Oak Waldorf School Placer County |
200 | 1 | 1 | |
|
Lnf-Eagle Lake Campgrounds Lassen County |
200 | 0 | 0 | |
|
Loma Rica Water Company Yuba County |
200 | 1 | 0 | |
|
Louis A. Stelzer County Park San Diego County |
200 | 0 | 0 | |
|
Lundy Mutual Water Company Mono County |
200 | 0 | 0 | |
|
Maccallum House Inn Mendocino County |
200 | 0 | 0 | |
|
Madera Municipal Golf Course Madera County |
200 | 1 | 0 | |
|
Majestic Townsgate Water System Santa Barbara County |
200 | 1 | 1 | |
|
Manon Manor Mutual Water Company Kern County |
200 | 0 | 0 | |
|
Mariposa District Fairground Mariposa County |
200 | 2 | 0 | |
|
MD 07 Marina View Heights Madera County |
200 | 1 | 0 | |
|
Mdf-Blue Lake CG Modoc County |
200 | 1 | 0 | |
|
Monroe School Fresno County |
200 | 1 | 1 | |
|
Morada Chevron Fast N Easy #60* San Joaquin County |
200 | 0 | 0 | |
|
Moss Landing Mwc Monterey County |
200 | 0 | 0 | |
|
Mustang Mutual Water System Kern County |
200 | 0 | 0 | |
|
New Life Calvary Chapel of Mariposa Mariposa County |
200 | 0 | 0 | |
|
Normans Nursery San Joaquin County |
200 | 0 | 0 | |
|
Octagon Barn Center Association San Luis Obispo County |
200 | 0 | 0 | |
|
Old Eucalyptus Schoolhouse Imperial County |
200 | 0 | 0 | |
|
Palisades Water System Placer County |
200 | 0 | 0 | |
|
Paradise Point Marina San Joaquin County |
200 | 0 | 0 | |
|
Pine Valley Trailer Park San Diego County |
200 | 0 | 0 | |
|
Pomo Campground Mendocino County |
200 | 1 | 0 | |
|
Presentation School Sonoma County |
200 | 1 | 1 | |
|
Prunetree Shopping Center WS Monterey County |
200 | 0 | 0 | |
|
Psmcsd Springfield WS Monterey County |
200 | 1 | 0 | |
|
Putah Canyon Campground Napa County |
200 | 0 | 0 | |
|
Rancho Estates Mutual Water Co. San Diego County |
200 | 0 | 0 | |
|
Rancho San Andreas Santa Cruz County |
200 | 0 | 0 | |
|
Redwood Park C.s.d. Del Norte County |
200 | 2 | 1 | |
|
Reel in Resort Lake County |
200 | 0 | 0 | |
|
River Highlands Csd Yuba County |
200 | 0 | 0 | |
|
River View Grill & Bar Tulare County |
200 | 0 | 0 | |
|
Scribner Bend Vineyard Sacramento County |
200 | 0 | 0 | |
|
Sierra Energy #3 Nevada County |
200 | 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.