All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Jackson Shell (sws) Sacramento County |
150 | 0 | 0 | |
|
Jess Martin County Park San Diego County |
150 | 1 | 0 | |
|
Johnny Quik Store 149 Fresno County |
150 | 0 | 0 | |
|
Kern Energy Kern County |
150 | 0 | 0 | |
|
Kingdom Hall of Jehovah's Witnesses, Ber Placer County |
150 | 1 | 0 | |
|
Lake Pillsbury Resort & Marina INC Lake County |
150 | 0 | 0 | |
|
Lassen Vnp Lost Creek Tehama County |
150 | 0 | 0 | |
|
Lemons' Market Mendocino County |
150 | 0 | 0 | |
|
Lifebridge Community Church Madera County |
150 | 1 | 0 | |
|
Macrostie Winery and Vineyard Sonoma County |
150 | 0 | 0 | |
|
Madera Ranchos Assembly of God Madera County |
150 | 1 | 0 | |
|
MD 24 Teaford Meadow Lakes Madera County |
150 | 1 | 0 | |
|
MD 40 Sunset Ridge Estates Madera County |
150 | 0 | 0 | |
|
MD 60 Dillon Estates Madera County |
150 | 0 | 0 | |
|
MD 95 Ranchos West Madera County |
150 | 0 | 0 | |
|
Meadowlark Ranches Mutual Water Company Santa Barbara County |
150 | 1 | 1 | |
|
Mendocino Coast Botanical Gardens Fort Bragg · Mendocino County |
150 | 0 | 0 | |
|
Merced Golf & Country Club Merced County |
150 | 0 | 0 | |
|
Mission Highlands Mutual Water Co. Sonoma County |
150 | 0 | 0 | |
|
Mjusd Loma Rica School Yuba County |
150 | 2 | 2 | |
|
Monte Shasta M.w.c. Siskiyou County |
150 | 0 | 0 | |
|
Mountain High East Ski Area Los Angeles County |
150 | 0 | 0 | |
|
Mountain Meadows Camp Shasta County |
150 | 0 | 0 | |
|
Mountain Ranch Water System Calaveras County |
150 | 0 | 0 | |
|
MP Associates, Inc. Amador County |
150 | 0 | 0 | |
|
MT San Jacinto ST Park (stone Creek) Riverside County |
150 | 0 | 0 | |
|
Nelson's Grove Yolo County |
150 | 1 | 0 | |
|
Nicholson Ranch Winery Sonoma County |
150 | 0 | 0 | |
|
Nps Death Valley, Furnace Creek Inyo County |
150 | 1 | 0 | |
|
Ocotillo Mutual Water CO Imperial County |
150 | 1 | 1 | |
|
Oid #22 Williams Tract Stanislaus County |
150 | 0 | 0 | |
|
Opolo Water System San Simeon · San Luis Obispo County |
150 | 0 | 0 | |
|
Pacific Bell Ue17l Water System San Joaquin County |
150 | 1 | 1 | |
|
Palomar Mountain Mutual Water Co. San Diego County |
150 | 1 | 0 | |
|
Pasquini's (micheli) WS Sutter County |
150 | 0 | 0 | |
|
Petersons Corner Water System Nevada County |
150 | 0 | 0 | |
|
Pg&e Haskins Valley CG Plumas County |
150 | 0 | 0 | |
|
Pg&e Ponderosa Flat CG Plumas County |
150 | 0 | 0 | |
|
Pipi Campground Water System El Dorado County |
150 | 1 | 0 | |
|
Pneuma Retreat Center Stewart Mineral Siskiyou County |
150 | 0 | 0 | |
|
Prunedale Shopping Center WS Monterey County |
150 | 1 | 1 | |
|
Quality Inn System Inyo County |
150 | 0 | 0 | |
|
Reche Canyon Mutual Water Co. Riverside County |
150 | 0 | 0 | |
|
Riebli Mutual Water Company Sonoma County |
150 | 0 | 0 | |
|
River's Edge Marina & Resort Sacramento County |
150 | 1 | 0 | |
|
RM Pyles Boys Camp Tulare County |
150 | 0 | 0 | |
|
Rmrc-Fir & Cove Group Campgrounds Tulare County |
150 | 0 | 0 | |
|
Rodney Strong Vineyards Sonoma County |
150 | 0 | 0 | |
|
Santa Margarita Recreation Area San Luis Obispo County |
150 | 0 | 0 | |
|
Schober Lane Campground Inyo County |
150 | 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.