All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Delores Lane Water System Sonoma County |
54 | 0 | 0 | |
|
Diamond Mountain Golf Club Lassen County |
54 | 0 | 0 | |
|
E String Cellars Sonoma County |
54 | 0 | 0 | |
|
E. Silver Lake Homeowners Amador County |
54 | 1 | 0 | |
|
Lakeshore Villa Mutual Water CO Shasta County |
54 | 0 | 0 | |
|
Llanas Camp Four Water System Kern County |
54 | 0 | 0 | |
|
Modoc Medical Center Canby Clinic Modoc County |
54 | 0 | 0 | |
|
Mountain View Estates Mwc Inyo County |
54 | 0 | 0 | |
|
Pali Overnight Adventures San Bernardino County |
54 | 0 | 0 | |
|
Pine Valley Border Patrol Station San Diego County |
54 | 0 | 0 | |
|
River Grove Mutual Water Assn Santa Cruz County |
54 | 3 | 0 | |
|
Rooster's Landing Shasta County |
54 | 0 | 0 | |
|
Sea Rock Inn Mendocino County |
54 | 0 | 0 | |
|
Sequoia Water Assoc Sacramento County |
54 | 2 | 2 | |
|
Tierra Vista Mwc Monterey County |
54 | 1 | 1 | |
|
Upper Line Creek Imprvmnt Assn Fresno County |
54 | 0 | 0 | |
|
Usfs-Big Pines V-2 Los Angeles County |
54 | 0 | 0 | |
|
Valivu Estates MHP Plumas County |
54 | 1 | 1 | |
|
Walking M Ranches Santa Barbara County |
54 | 2 | 1 | |
|
Westside Grocery, Inc. Merced County |
54 | 0 | 0 | |
|
Apricot LN WS Monterey County |
53 | 0 | 0 | |
|
Baca Tasting Room Healdsburg · Sonoma County |
53 | 0 | 0 | |
|
Camp Liahona Alpine County |
53 | 0 | 0 | |
|
Casa de Fruta Orchards San Benito County |
53 | 0 | 0 | |
|
Fcpg/choinumni Campground Fresno County |
53 | 0 | 0 | |
|
Feather River RV & MHP Plumas County |
53 | 1 | 1 | |
|
Foothill Estates MHP San Bernardino County |
53 | 0 | 0 | |
|
Golden Empire Concrete Company Kern County |
53 | 1 | 1 | |
|
Green Acres Mutual Water Santa Clara County |
53 | 1 | 1 | |
|
Little Avenue Water System Tehama County |
53 | 2 | 1 | |
|
McCall Park Riv.county Parks Riverside County |
53 | 1 | 0 | |
|
Meadow Edge MHP Plumas County |
53 | 1 | 1 | |
|
Modoc Vineyard Academy Modoc County |
53 | 1 | 0 | |
|
Oak Park WS Monterey County |
53 | 0 | 0 | |
|
Ocean Grove Lodge Humboldt County |
53 | 0 | 0 | |
|
Pine Grove Mobilehome Park Shasta County |
53 | 0 | 0 | |
|
Star Motel San Joaquin County |
53 | 1 | 0 | |
|
Stocking Ranch Deepwell Solano County |
53 | 0 | 0 | |
|
Sullivan Mutual Water Santa Clara County |
53 | 2 | 1 | |
|
Upper Sage Flat Campground Inyo County |
53 | 1 | 0 | |
|
Vista Robles Association Santa Cruz County |
53 | 0 | 0 | |
|
Wespak, Inc. Tulare County |
53 | 2 | 1 | |
|
Westside Harvesting, LLC Kings County |
53 | 0 | 0 | |
|
Anza Borrego SP Tamarisk Grove San Diego County |
52 | 0 | 0 | |
|
Aptos Ridge Mutual Water CO Santa Cruz County |
52 | 0 | 0 | |
|
B Cellars Winery Napa County |
52 | 0 | 0 | |
|
Bracken Brae Country Club Santa Cruz County |
52 | 3 | 2 | |
|
Bucher Water Company Sonoma County |
52 | 1 | 1 | |
|
Cal Fire Miramonte Conservation Camp Fresno County |
52 | 0 | 0 | |
|
Domaine Carneros Napa County |
52 | 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.