All water systems in California
2,996 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Walker Country Store B.c.d.c. Mono County |
25 | 0 | 0 | |
|
Walker RV Park Mono County |
25 | 0 | 0 | |
|
Washoe Heights Water Association Placer County |
25 | 0 | 0 | |
|
Waterford Sportsmen's Club Stanislaus County |
25 | 0 | 0 | |
|
Waterloo California Restaurant San Joaquin County |
25 | 0 | 0 | |
|
West 11th Street Chevron Water System San Joaquin County |
25 | 0 | 0 | |
|
Westerbeke Ranch Sonoma County |
25 | 0 | 0 | |
|
Western Holiday Lodge Tulare County |
25 | 0 | 0 | |
|
Westgate Landing Park Water System San Joaquin County |
25 | 0 | 0 | |
|
Westley Property LLC Stanislaus County |
25 | 0 | 0 | |
|
Westside Lockers Kings County |
25 | 0 | 0 | |
|
Whiskeytown Nra-Dry Creek Shasta County |
25 | 0 | 0 | |
|
Wilcox Oaks Golf Club Tehama County |
25 | 0 | 0 | |
|
Woodbridge Pizza Water System San Joaquin County |
25 | 0 | 0 | |
|
Woods Lake Rec. Area Alpine County |
25 | 0 | 0 | |
|
YMCA Camp TA TA Pochon San Bernardino County |
25 | 0 | 0 | |
|
Young-Nak Presbyterian Church Los Angeles County |
25 | 0 | 0 | |
|
Zansco Modesto · Stanislaus County |
25 | 0 | 0 | |
|
Zipline Nest Z Woodland · Yolo County |
25 | 0 | 0 | |
|
Zuckerman Heritage-McDonald San Joaquin County |
25 | 0 | 0 | |
|
Fallbrook Kamp Retreat San Diego County |
24 | 0 | 0 | |
|
Mountain Empire R.v. Park and Campground San Diego County |
23 | 0 | 0 | |
|
Rainbow Tract Water Assoc El Dorado County |
23 | 1 | 0 | |
|
Sivananda Yoga Farm Nevada County |
23 | 1 | 0 | |
|
Mill Creek/lassen Mutual Water Tehama County |
22 | 0 | 0 | |
|
Topaz Mobile Home Park Mono County |
22 | 0 | 0 | |
|
Boulevard Pines Mobile Home and RV Park San Diego County |
21 | 1 | 0 | |
|
Redlands Colony Pipeline Association San Bernardino County |
21 | 1 | 1 | |
|
Mid Bagby Recreation Area Mariposa County |
20 | 0 | 0 | |
|
Paradise Shores RV Park Mono County |
20 | 0 | 0 | |
|
Usfs-Troy Meadow Campground Tulare County |
18 | 0 | 0 | |
|
Alpine Village Water Company Tulare County |
16 | 0 | 0 | |
|
Mountain Streams RV Park San Bernardino County |
16 | 1 | 0 | |
|
Coco Palms Mobile Home Park Imperial County |
15 | 0 | 0 | |
|
Desiderata Estates Mutual Water Company Inyo County |
15 | 0 | 0 | |
|
Jago Bay Mutual Water Company Lake County |
15 | 0 | 0 | |
|
Mammoth Yosemite Airport Mono County |
13 | 0 | 0 | |
|
Rey River Ranch Corp. San Diego County |
12 | 0 | 0 | |
|
L. C. Hunting Club Butte County |
10 | 0 | 0 | |
|
Rinconada Trailer Park San Luis Obispo County |
10 | 0 | 0 | |
|
Sierra Masonic Water CO Tulare County |
10 | 0 | 0 | |
|
Willow Springs Resort Mono County |
9 | 0 | 0 | |
|
Biggers Glen Mutual Water CO Butte County |
6 | 1 | 1 | |
|
Bolo Station RV Park & Snack Bar San Bernardino County |
6 | 2 | 0 | |
|
Camp Heart Bar Equestrian Group San Bernardino County |
1 | 0 | 0 | |
|
Ladwp Manzanar Bishop · Inyo County |
0 | 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.