All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Horizon Nut LLC Tulare County |
300 | 0 | 0 | |
|
Irvine Lodge Rest Stop (caltrans) Mendocino County |
300 | 0 | 0 | |
|
Irwindale Brewery Yard (iby) Los Angeles County |
300 | 0 | 0 | |
|
Jack in the Box #3465 Yolo County |
300 | 0 | 0 | |
|
Lake Morena County Park San Diego County |
300 | 0 | 0 | |
|
Lds Church Atwater Merced County |
300 | 0 | 0 | |
|
Lombardi's Deli & Bbq Sonoma County |
300 | 0 | 0 | |
|
Lupin Lodge Santa Clara County |
300 | 2 | 1 | |
|
MD 46 Ahwahnee Resorts Madera County |
300 | 0 | 0 | |
|
MD 63 Meadow Springs Ranch Madera County |
300 | 0 | 0 | |
|
Mel Mar Mutual Water CO Shasta County |
300 | 1 | 1 | |
|
Mesquite Mines Inc. Imperial County |
300 | 1 | 1 | |
|
Morehead Park San Joaquin County |
300 | 2 | 1 | |
|
Mountain Camp II El Dorado County |
300 | 1 | 0 | |
|
Mt. Pleasant Water Users Association Santa Clara County |
300 | 0 | 0 | |
|
Mitomkai Tribal Water System Lockhart · County |
300 | 3 | 1 | |
|
Nmip Fire & Water System, LLC Stanislaus County |
300 | 1 | 0 | |
|
North Ridge Country Club Sacramento County |
300 | 0 | 0 | |
|
Oakland Feather River Camp Plumas County |
300 | 0 | 0 | |
|
Oakstone LLC Madera County |
300 | 0 | 0 | |
|
Okieville Highland Acres Mwc Tulare County |
300 | 1 | 1 | |
|
Old Natividad RD WS #01 Monterey County |
300 | 0 | 0 | |
|
Palomino Lakes Mutual Water Co. Sonoma County |
300 | 0 | 0 | |
|
Paradise Adventist Church Butte County |
300 | 1 | 0 | |
|
Pioneer Bible Church El Dorado County |
300 | 2 | 0 | |
|
Potrero Elementary School San Diego County |
300 | 0 | 0 | |
|
Preet Market Tulare County |
300 | 0 | 0 | |
|
R-Ranch Headquarters Siskiyou County |
300 | 0 | 0 | |
|
R-Ranch Klamath River Siskiyou County |
300 | 0 | 0 | |
|
Rainbow Springs Public Water System Placer County |
300 | 0 | 0 | |
|
Rancho Market Redding · Shasta County |
300 | 0 | 0 | |
|
Richard A. McGee Training Center Sacramento County |
300 | 1 | 0 | |
|
Riverboat Marina Sacramento County |
300 | 0 | 0 | |
|
Riverdale Estates Riverside County |
300 | 0 | 0 | |
|
Sacramento Rendering Sacramento County |
300 | 0 | 0 | |
|
Sacwest RV Park and Campground Yolo County |
300 | 0 | 0 | |
|
Sahara Mobile Court San Joaquin County |
300 | 0 | 0 | |
|
Salmon Creek Middle School Sonoma County |
300 | 2 | 0 | |
|
San Antonio School District WS Monterey County |
300 | 0 | 0 | |
|
Siskiyou Co. Rolling Hills Mwc Siskiyou County |
300 | 0 | 0 | |
|
Southside Elementary School San Benito County |
300 | 0 | 0 | |
|
Spreckels Sugar Company Imperial County |
300 | 4 | 2 | |
|
Strathmore Minimart Tulare County |
300 | 0 | 0 | |
|
Sutherland Reservoir Recreation Area San Diego County |
300 | 1 | 0 | |
|
Sysco Food Services of Sacramento, Inc. Sutter County |
300 | 1 | 0 | |
|
Talmont Resort Improvement District Placer County |
300 | 1 | 0 | |
|
Teal Bend Golf Course Sacramento County |
300 | 0 | 0 | |
|
The Garlic Company Kern County |
300 | 0 | 0 | |
|
The Lodge at Sonoma Sonoma County |
300 | 1 | 0 | |
|
Tnf-Aspen Creek/pass Creek Sierra County |
300 | 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.