All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Netto AG Inc. Kings County |
50 | 2 | 1 | |
|
New Age Church of Being-Sierra Hot Spr. Sierra County |
50 | 0 | 0 | |
|
Norris Canyon Property Owners Assn Alameda County |
50 | 1 | 1 | |
|
North San Juan Community Center Nevada County |
50 | 1 | 0 | |
|
Northshore S & B, INC San Luis Obispo County |
50 | 0 | 0 | |
|
Nyack Water System Placer County |
50 | 0 | 0 | |
|
Oak Creek Investment Water System Kern County |
50 | 0 | 0 | |
|
Ocotillo Wells Svra HQ San Diego County |
50 | 1 | 0 | |
|
OM Scott & Sons/hyponex Corp San Joaquin County |
50 | 0 | 0 | |
|
One Stop WS Stanislaus County |
50 | 1 | 0 | |
|
Onitsuka Brothers WS Monterey County |
50 | 0 | 0 | |
|
Owens Peak South Kern County |
50 | 0 | 0 | |
|
Pacific Coast Energy Company Santa Barbara County |
50 | 0 | 0 | |
|
Pacific Valley Campground Alpine County |
50 | 0 | 0 | |
|
Paicines Water System San Benito County |
50 | 0 | 0 | |
|
Paradise Springs Madera County |
50 | 0 | 0 | |
|
Paragon Triangle Water Supply San Luis Obispo County |
50 | 0 | 0 | |
|
Pardee Center Calaveras County |
50 | 0 | 0 | |
|
Pastor ST Bernard Chrch Wtr Sys San Joaquin County |
50 | 0 | 0 | |
|
Pesante RD WS #06 Monterey County |
50 | 1 | 1 | |
|
Petes Place LLC San Joaquin County |
50 | 0 | 0 | |
|
Petros Winery Santa Barbara County |
50 | 0 | 0 | |
|
PG & E Pipeline Operation San Bernardino County |
50 | 0 | 0 | |
|
Pg&e Yuba County |
50 | 1 | 1 | |
|
Pine Valley Bible Conference Center San Diego County |
50 | 0 | 0 | |
|
Pnf Boulder / Lone Creek Cgs Plumas County |
50 | 1 | 0 | |
|
Pnf Sandy Point Day Use Area Plumas County |
50 | 0 | 0 | |
|
Pnf Sundew / Hutchins Cgs Plumas County |
50 | 0 | 0 | |
|
Poindexter Nut Company Fresno County |
50 | 1 | 1 | |
|
Polymerpak Tulare County |
50 | 1 | 1 | |
|
Port Sonoma Marina Sonoma County |
50 | 0 | 0 | |
|
Primm Valley Golf Club San Bernardino County |
50 | 4 | 2 | |
|
Quick Chek West Riverside County |
50 | 0 | 0 | |
|
Quintero Labor Camp #1 (wright Rd) San Benito County |
50 | 0 | 0 | |
|
Rancho Salinas Mbwc San Luis Obispo County |
50 | 0 | 0 | |
|
Rbvon Stanislaus County |
50 | 0 | 0 | |
|
Red Bluff Recreation Area Tehama County |
50 | 0 | 0 | |
|
Rick's Hacienda (sws) Sacramento County |
50 | 0 | 0 | |
|
Ridgeview Estates Mwc Santa Cruz County |
50 | 0 | 0 | |
|
Rock Creek Lake Boat Dock & Group Camp Inyo County |
50 | 0 | 0 | |
|
Rombauer Vineyards Napa County |
50 | 0 | 0 | |
|
Round Mountain Water Company Kern County |
50 | 0 | 0 | |
|
S & W Warehousing, LLC Sonoma County |
50 | 1 | 1 | |
|
Saint Francis Winery-Wild Oak Vineyards Sonoma County |
50 | 0 | 0 | |
|
San Gabriel Valley Family Center Mono County |
50 | 0 | 0 | |
|
Sand Flat Campground El Dorado County |
50 | 0 | 0 | |
|
Santa Cruz County Fairgrounds Santa Cruz County |
50 | 1 | 0 | |
|
Schellville Grill Sonoma County |
50 | 0 | 0 | |
|
Seafair Road and Water Company Mendocino County |
50 | 0 | 0 | |
|
Selma Quick Stop Fresno County |
50 | 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.