All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Cobles Corner Stanislaus County |
50 | 1 | 0 | |
|
Cortez Growers Asso. Water System Turlock · Merced County |
50 | 0 | 0 | |
|
Cottonwood Chevron Tehama County |
50 | 0 | 0 | |
|
Country Village Mobile Home Park Yuba County |
50 | 0 | 0 | |
|
Cow Creek Permittees Association Tuolumne County |
50 | 1 | 0 | |
|
Cvusd Facilities/m&o Riverside County |
50 | 1 | 1 | |
|
Delphic Elementary School Siskiyou County |
50 | 0 | 0 | |
|
Delta Beach Resorts [sws] Sacramento County |
50 | 0 | 0 | |
|
Dew Drop Inn Nevada County |
50 | 0 | 0 | |
|
Dhs Border Patrol I-8 Checkpoint San Diego County |
50 | 2 | 1 | |
|
Dillard Store (sws) Sacramento County |
50 | 1 | 0 | |
|
Dolan RD Water System #2 Monterey County |
50 | 1 | 1 | |
|
Dollar General Smartsville Yuba County |
50 | 0 | 0 | |
|
Dollar General Store Weed Weed · Siskiyou County |
50 | 0 | 0 | |
|
Doreva Produce Merced County |
50 | 0 | 0 | |
|
Dream Mountain Christian Camp Inc. Calaveras County |
50 | 0 | 0 | |
|
Durham Park Butte County |
50 | 0 | 0 | |
|
E.m. Tharp, Inc. Tulare County |
50 | 0 | 0 | |
|
East County Transitional Living Center San Diego County |
50 | 1 | 0 | |
|
Eastern Sierra Regional Airport Inyo County |
50 | 1 | 1 | |
|
EL Mirage School San Bernardino County |
50 | 1 | 1 | |
|
Element 79 Vineyards El Dorado County |
50 | 1 | 0 | |
|
Englebright Dam Recreation Center Nevada County |
50 | 0 | 0 | |
|
Enviroplex, INC San Joaquin County |
50 | 0 | 0 | |
|
Esterina Properties Ventura County |
50 | 1 | 1 | |
|
Family Education Center Tulare County |
50 | 0 | 0 | |
|
Flood Ranch/rancho Sisquoc Santa Barbara County |
50 | 0 | 0 | |
|
Foster Farms Traver Feedmill Tulare County |
50 | 0 | 0 | |
|
Fowler Packing Company Fresno County |
50 | 0 | 0 | |
|
Fremont Diner Sonoma County |
50 | 1 | 0 | |
|
Galindo Housing Facility Riverside County |
50 | 0 | 0 | |
|
Gorda WS Monterey County |
50 | 0 | 0 | |
|
Gordon's Well #1 Imperial County |
50 | 0 | 0 | |
|
Gordon's Well Park # 2 Imperial County |
50 | 0 | 0 | |
|
Gosford Road Water Company Kern County |
50 | 0 | 0 | |
|
GP Anacapa Foods, Llc. Ventura County |
50 | 0 | 0 | |
|
Grace Korean Church Riverside County |
50 | 0 | 0 | |
|
Granite Ridge San Luis Obispo County |
50 | 0 | 0 | |
|
Graton Mutual Water System Sonoma County |
50 | 0 | 0 | |
|
Gravenstein Business Park Sonoma County |
50 | 0 | 0 | |
|
Gray Eagle Lodge Plumas County |
50 | 0 | 0 | |
|
Gray Water System Sonoma County |
50 | 0 | 0 | |
|
Grimes Boat Landing Colusa County |
50 | 0 | 0 | |
|
Hadley Date Gardens Riverside County |
50 | 1 | 0 | |
|
Hartland Water Company Tulare County |
50 | 0 | 0 | |
|
Henninger Flats Los Angeles County |
50 | 0 | 0 | |
|
Heritage House Mendocino County |
50 | 0 | 0 | |
|
Hilltop Mwa Monterey County |
50 | 0 | 0 | |
|
Hkn LLC Santa Clara County |
50 | 1 | 1 | |
|
Holly Ranch Village Mendocino County |
50 | 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.