All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Sabrina Campground Inyo County |
37 | 1 | 0 | |
|
Sage Flat Campground Inyo County |
37 | 1 | 0 | |
|
Sonoma Springs Sonoma County |
37 | 0 | 0 | |
|
Stateline Services INC San Bernardino County |
37 | 0 | 0 | |
|
Sunrise Mobilehome Park Shasta County |
37 | 0 | 0 | |
|
Vinehill Vistas Mutual Water Company Sonoma County |
37 | 0 | 0 | |
|
Woodson Bridge S.r.a. Tehama County |
37 | 0 | 0 | |
|
148 East Water System Kern County |
36 | 1 | 0 | |
|
Big River Vista Mutual Water Company Mendocino County |
36 | 0 | 0 | |
|
Bleich Flats Mutual Los Angeles County |
36 | 0 | 0 | |
|
Bobs Market Anderson · Shasta County |
36 | 0 | 0 | |
|
Camp Tuolumne Trails Tuolumne County |
36 | 0 | 0 | |
|
Deer Hill Mutual Water CO Santa Clara County |
36 | 0 | 0 | |
|
Dry Creek Vineyard Sonoma County |
36 | 0 | 0 | |
|
Evergreen Mobile Home Park Merced County |
36 | 1 | 1 | |
|
Fritsch Industrial Park Sonoma County |
36 | 0 | 0 | |
|
Hilltop Ranch-Looney Road Merced County |
36 | 0 | 0 | |
|
Hillview Acres Mutual Water Company Kern County |
36 | 0 | 0 | |
|
Hillview Packing-Gustine Merced County |
36 | 0 | 0 | |
|
Hilton Mutual Water Company Sonoma County |
36 | 1 | 0 | |
|
Hounds Tooth Inn Madera County |
36 | 1 | 0 | |
|
Hungry Gulch Mwc Kern County |
36 | 1 | 0 | |
|
Indian Hills Camp San Diego County |
36 | 2 | 0 | |
|
Kimberlina Housing Unit Kern County |
36 | 0 | 0 | |
|
Kings River Point Fresno County |
36 | 2 | 2 | |
|
Maxville Lake Winery Napa County |
36 | 0 | 0 | |
|
Maze Blvd Mobilehome Park Stanislaus County |
36 | 1 | 1 | |
|
McClure Boat Club, Inc. Mariposa County |
36 | 0 | 0 | |
|
Nicasio Valley Ranch Mutual Marin County |
36 | 0 | 0 | |
|
Oak Grove School District Office Sonoma County |
36 | 0 | 0 | |
|
Point of View Mutual Water CO Mendocino County |
36 | 0 | 0 | |
|
Redwoods 70's Water System Mariposa County |
36 | 0 | 0 | |
|
Rmrc-Upper Coffee Camp Day Use Tulare County |
36 | 0 | 0 | |
|
Royal Sierra Estates WS Monterey County |
36 | 1 | 0 | |
|
Silver Spur Center/gallery Row Madera County |
36 | 1 | 0 | |
|
Spaulding Eagle Lake Mwc Lassen County |
36 | 0 | 0 | |
|
Ventucopa Santa Barbara County |
36 | 0 | 0 | |
|
Yosemite Resort Properties Mariposa County |
36 | 0 | 0 | |
|
Zonneveld Dairy Cerini Fresno County |
36 | 1 | 0 | |
|
Ahwahnee Quik Mart Madera County |
35 | 0 | 0 | |
|
Alpine Early Learning Center Alpine County |
35 | 1 | 0 | |
|
Applegate Motel Water System Placer County |
35 | 0 | 0 | |
|
Bayer Research and Development LLC San Benito County |
35 | 0 | 0 | |
|
Beedy Water Company, LLC Ventura County |
35 | 0 | 0 | |
|
Better Cooling Produce Santa Barbara County |
35 | 1 | 0 | |
|
Blythe Mobile Home Estates Riverside County |
35 | 0 | 0 | |
|
Bob's Market Fresno County |
35 | 0 | 0 | |
|
Buckeye Tree Lodge Tulare County |
35 | 0 | 0 | |
|
Buckhorn Bar and Restaurant Madera County |
35 | 0 | 0 | |
|
Bucks Lake Camp and RV Park Plumas County |
35 | 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.