All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Silver Creek Summer Home Tract Placer County |
64 | 1 | 0 | |
|
St. Peters Catholic Cemetery Fresno County |
64 | 0 | 0 | |
|
Stags Leap Wine Cellars North Napa County |
64 | 0 | 0 | |
|
Titus Winery Napa County |
64 | 0 | 0 | |
|
Wegis Mutual Water Company Kern County |
64 | 1 | 1 | |
|
Abbey of New Clairvaux Tehama County |
63 | 0 | 0 | |
|
Azcal Management CO Kings County |
63 | 0 | 0 | |
|
Campana Ranch Winery Sonoma County |
63 | 0 | 0 | |
|
Cold Creek Mutual Water Company Siskiyou County |
63 | 0 | 0 | |
|
DE Benneville Pines San Bernardino County |
63 | 0 | 0 | |
|
Goldeneye Winery Mendocino County |
63 | 0 | 0 | |
|
Highway 20 Trailer Park Colusa County |
63 | 0 | 0 | |
|
Indian Grinding Rock-Calaveras District Amador County |
63 | 0 | 0 | |
|
J.g. Boswell Company Water System Kern County |
63 | 0 | 0 | |
|
Lake Chiquita Mutual Water Company El Dorado County |
63 | 0 | 0 | |
|
Lazy W Ranch Water System Orange County |
63 | 0 | 0 | |
|
Madison Center Water System Riverside County |
63 | 1 | 1 | |
|
Merced Fruit Barn Merced County |
63 | 0 | 0 | |
|
Mother Lode Water System El Dorado County |
63 | 2 | 0 | |
|
Richvale Elementary School Butte County |
63 | 1 | 1 | |
|
Rmrc-Eshom Campground Tulare County |
63 | 0 | 0 | |
|
Seawood Estates Mutual Water Company Humboldt County |
63 | 1 | 1 | |
|
Sid Blue Ridge Oaks Solano County |
63 | 1 | 1 | |
|
South Campo County |
63 | 5 | 0 | |
|
88 Market & Grill San Joaquin County |
62 | 0 | 0 | |
|
Cascade Mutual Water Company El Dorado County |
62 | 0 | 0 | |
|
Dan R Costa INC (ws) San Joaquin County |
62 | 0 | 0 | |
|
Forest Point MHC Amador County |
62 | 0 | 0 | |
|
Hidden Canyon Ranch Mwc Monterey County |
62 | 0 | 0 | |
|
Hill House at Trailborn Mendocino Mendocino County |
62 | 0 | 0 | |
|
Laetitia Vineyard & Winery INC San Luis Obispo County |
62 | 0 | 0 | |
|
Lassen Mobile Home Park Lassen County |
62 | 0 | 0 | |
|
Murray Family Farms at General Beale RD Kern County |
62 | 0 | 0 | |
|
Palisades, the Glenn County |
62 | 0 | 0 | |
|
Psea Camp Almanor Plumas County |
62 | 0 | 0 | |
|
Quail Ridge RV Park Yuba County |
62 | 0 | 0 | |
|
Ranchos del Rio Kern County |
62 | 1 | 0 | |
|
Sangiacomo Winery Sonoma · Sonoma County |
62 | 0 | 0 | |
|
Santa Margarita Ranch Headquarters Cayucos · San Luis Obispo County |
62 | 0 | 0 | |
|
Scribe Winery Sonoma County |
62 | 0 | 0 | |
|
Spring Hills Golf Course Santa Cruz County |
62 | 0 | 0 | |
|
Tud-Wards Ferry Ranches Tuolumne County |
62 | 1 | 0 | |
|
Twentynine Palms Inn San Bernardino County |
62 | 1 | 0 | |
|
Wampum Hill Trailer Village Mariposa County |
62 | 0 | 0 | |
|
Wonder Valley River Way Ranch Fresno County |
62 | 1 | 1 | |
|
Yolo Bypass Wildlife Area Yolo County |
62 | 1 | 0 | |
|
Z Ranch Mwc Monterey County |
62 | 0 | 0 | |
|
Buckhorn Camp Riverside County |
61 | 1 | 0 | |
|
Destiny McIntyre RV Campground Riverside County |
61 | 0 | 0 | |
|
Flow Restaurant Mendocino County |
61 | 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.