All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Pit River Chimney Rock County |
35 | 4 | 0 | |
|
R.s. Mutual Water Company Kern County |
35 | 3 | 0 | |
|
Rivers End Trailer Park Los Angeles County |
35 | 2 | 2 | |
|
Rollins Lakeside Resort Nevada County |
35 | 0 | 0 | |
|
Saini Winery Sonoma County |
35 | 0 | 0 | |
|
Sce Bishop Creek Plant 4 Inyo County |
35 | 0 | 0 | |
|
Shop & Save Yuba County |
35 | 0 | 0 | |
|
Sierra Family Medical Clinic Nevada County |
35 | 0 | 0 | |
|
Snow Valley Mountain Resort San Bernardino County |
35 | 2 | 0 | |
|
Sonoma Botanical Garden Sonoma County |
35 | 0 | 0 | |
|
Sterling Industrial Stanislaus County |
35 | 1 | 1 | |
|
Streeter Industrial Plaza Nevada County |
35 | 0 | 0 | |
|
Sws Land Development INC Madera County |
35 | 4 | 0 | |
|
Tahoe Vistana Placer County |
35 | 1 | 0 | |
|
Talley Transportation INC Madera County |
35 | 1 | 0 | |
|
Teichert Construction Yolo County |
35 | 0 | 0 | |
|
The River Community Los Angeles County |
35 | 2 | 2 | |
|
Tlc Child & Family Services Sonoma County |
35 | 0 | 0 | |
|
TN Truss Los Angeles County |
35 | 1 | 0 | |
|
Tres Hermanas Winery Santa Barbara County |
35 | 0 | 0 | |
|
Tri-Cal Incorporated San Benito County |
35 | 0 | 0 | |
|
Truett & Hurst Winery Sonoma County |
35 | 0 | 0 | |
|
Two Twenty Four Mobile Home PK Madera County |
35 | 3 | 2 | |
|
Ucla White Mountain Research Center Inyo County |
35 | 0 | 0 | |
|
United Rentals Sonoma County |
35 | 0 | 0 | |
|
Ups Bishop (cabis) Bishop · Inyo County |
35 | 0 | 0 | |
|
Usfs-Lower Peppermint Tulare County |
35 | 0 | 0 | |
|
V & P Trailer Court Water System San Joaquin County |
35 | 2 | 0 | |
|
Victor Packing Madera County |
35 | 0 | 0 | |
|
Vino Farms, Inc. Wasson Ranch Sonoma County |
35 | 0 | 0 | |
|
Vargas MHP County |
35 | 1 | 0 | |
|
Waste Connections Water CO San Luis Obispo County |
35 | 1 | 0 | |
|
Wiebe Farms Tulare County |
35 | 2 | 0 | |
|
Williams RC Farms WS Gonzales · Monterey County |
35 | 2 | 1 | |
|
Willowest Marina WS Contra Costa County |
35 | 0 | 0 | |
|
B & R Farms San Benito County |
34 | 0 | 0 | |
|
Best Western Cajon Pass San Bernardino County |
34 | 1 | 0 | |
|
Billingsley Dvm Water System Kern County |
34 | 0 | 0 | |
|
Bloomingcamp Water System Stanislaus County |
34 | 1 | 0 | |
|
Caltrans-Whitmore Maint. Station Placer County |
34 | 0 | 0 | |
|
Calvary Chapel Christian Camp San Bernardino County |
34 | 0 | 0 | |
|
Camp Chilnualna Water System Mariposa County |
34 | 1 | 0 | |
|
Camp Lockett Middle School San Diego County |
34 | 1 | 1 | |
|
Chinese Camp School Tuolumne County |
34 | 1 | 0 | |
|
Corral Creek Resort Tulare County |
34 | 0 | 0 | |
|
Dash Dream Plant Dos Palos · Merced County |
34 | 0 | 0 | |
|
Descanso Fire Station San Diego County |
34 | 0 | 0 | |
|
Exodus Farms Shasta County |
34 | 0 | 0 | |
|
Fcsa 44c Riverview Estates Fresno County |
34 | 0 | 0 | |
|
Feather River School Butte County |
34 | 2 | 2 |
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.