All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Golden State Water Desert View San Bernardino County |
120 | 0 | 0 | |
|
Institute of Mental Physics San Bernardino County |
120 | 3 | 1 | |
|
John B. Sanfilippo & Son, Inc. Merced County |
120 | 1 | 0 | |
|
Johnson Valley Community Center San Bernardino County |
120 | 0 | 0 | |
|
Kiernan Business Center Stanislaus County |
120 | 0 | 0 | |
|
Lakeview Ranchos Mutual Water Company Kern County |
120 | 0 | 0 | |
|
Las Palmas Mobile Home Park Del Norte County |
120 | 2 | 1 | |
|
Liberty Packing Company LLC Merced County |
120 | 1 | 1 | |
|
Libitzky Stanislaus County |
120 | 1 | 1 | |
|
Lodi Usd-Turner Academy at Tokay Colony San Joaquin County |
120 | 0 | 0 | |
|
Longview Mennonite School Merced County |
120 | 1 | 0 | |
|
Lower Deer Creek Tract Fresno County |
120 | 1 | 0 | |
|
Luna Trattoria Mendocino County |
120 | 1 | 1 | |
|
Madonna Inn Water Company San Luis Obispo County |
120 | 3 | 1 | |
|
Meadow Lakes Club Fresno County |
120 | 1 | 1 | |
|
Millers Hill School El Dorado County |
120 | 1 | 0 | |
|
National Cement Co.-Lebec Plant Kern County |
120 | 0 | 0 | |
|
New Auberry Water Association Fresno County |
120 | 3 | 1 | |
|
Nott-Hill Investment Corp (water) Madera County |
120 | 0 | 0 | |
|
Nuestro School Sutter County |
120 | 0 | 0 | |
|
O Me-Nook Maintenance and Operation Del Norte County |
120 | 2 | 0 | |
|
Oak Haven Association Riverside County |
120 | 0 | 0 | |
|
Pedrick Produce Solano County |
120 | 1 | 0 | |
|
Pesante RD WS #02 Monterey County |
120 | 0 | 0 | |
|
Pnf Kenzie Ravine 1 & 2 Plumas County |
120 | 0 | 0 | |
|
Quiet Oaks Mobile Home Park San Diego County |
120 | 1 | 0 | |
|
Redding Travel Center Shasta County |
120 | 0 | 0 | |
|
Ripperdan Community Day School Madera County |
120 | 2 | 0 | |
|
Road Trip Bar & Grill Yolo County |
120 | 0 | 0 | |
|
San Marcos Mutual Water Company Santa Barbara County |
120 | 0 | 0 | |
|
Select Harvest Usa, LLC Turlock · Merced County |
120 | 0 | 0 | |
|
Sherman Acres Mutual Water Asn Calaveras County |
120 | 0 | 0 | |
|
Sugar Pine Homeowners Assoc Madera County |
120 | 2 | 2 | |
|
Traditional Medicinals, Inc. Sonoma County |
120 | 0 | 0 | |
|
Twin Ridges Oak Tree School Nevada County |
120 | 0 | 0 | |
|
Ventura Coastal, LLC Visalia Division Tulare County |
120 | 2 | 1 | |
|
Yurok Weitchpec County |
120 | 5 | 0 | |
|
Big Sur Bazaar WS Monterey County |
119 | 0 | 0 | |
|
City of Modesto Central Turlock Modesto · Stanislaus County |
119 | 0 | 0 | |
|
Dune 3 Mutual Water Company, LLC Kern County |
119 | 0 | 0 | |
|
Green Meadows Outdoor School Mariposa County |
119 | 1 | 0 | |
|
Page Avenue Mutual Water Company Orange County |
119 | 2 | 0 | |
|
Round Valley Health Clinic County |
119 | 7 | 3 | |
|
San Antonio Canyon Msc San Bernardino County |
119 | 1 | 0 | |
|
Spring Creek Estates PWS San Joaquin County |
119 | 0 | 0 | |
|
Fcwwd 37/mile High Fresno County |
118 | 0 | 0 | |
|
Forest Ranch Mutual Water System Butte County |
118 | 1 | 1 | |
|
Grizzly Ranch Csd Plumas County |
118 | 0 | 0 | |
|
Laguna del Sol INC Sacramento County |
118 | 0 | 0 | |
|
Menf-Letts Lake CG Colusa County |
118 | 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.