All water systems in California
2,996 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Dripping Springs Cg Usfs Riverside County |
65 | 0 | 0 | |
|
Foothill Lions Club Yuba County |
65 | 0 | 0 | |
|
Groth Vineyards & Winery Napa County |
65 | 0 | 0 | |
|
Henry W Coe State Park Dowdy Ranch Santa Clara County |
65 | 0 | 0 | |
|
Kirkwood Campground Amador County |
65 | 2 | 0 | |
|
Lds Church Mariposa Mariposa County |
65 | 0 | 0 | |
|
Lotus Pub El Dorado County |
65 | 1 | 0 | |
|
Redding Odd Fellows Camp Trinity County |
65 | 1 | 0 | |
|
Sebastiani Vineyards Sonoma County |
65 | 0 | 0 | |
|
Trap the (sws) Sacramento County |
65 | 0 | 0 | |
|
Usn Sere Camp Warner Springs San Diego County |
65 | 0 | 0 | |
|
Wahl Family Water System Contra Costa County |
65 | 0 | 0 | |
|
Yosemite's Scenic Wonders Mariposa County |
65 | 1 | 0 | |
|
American Legion Tract Resort Assoc El Dorado County |
64 | 0 | 0 | |
|
Chateau Diana Sonoma County |
64 | 0 | 0 | |
|
Gracianna Winery Sonoma County |
64 | 0 | 0 | |
|
Lake Shasta Lodge Shasta County |
64 | 0 | 0 | |
|
Mount Gilead Bible Conference Sonoma County |
64 | 1 | 1 | |
|
Silver Creek Madera County |
64 | 1 | 0 | |
|
Silver Creek Summer Home Tract Placer County |
64 | 1 | 0 | |
|
St. Peters Catholic Cemetery Fresno County |
64 | 0 | 0 | |
|
Stags Leap Wine Cellars North Napa County |
64 | 0 | 0 | |
|
Titus Winery Napa County |
64 | 0 | 0 | |
|
Campana Ranch Winery Sonoma County |
63 | 0 | 0 | |
|
DE Benneville Pines San Bernardino County |
63 | 0 | 0 | |
|
Goldeneye Winery Mendocino County |
63 | 0 | 0 | |
|
Highway 20 Trailer Park Colusa County |
63 | 0 | 0 | |
|
Indian Grinding Rock-Calaveras District Amador County |
63 | 0 | 0 | |
|
Lake Chiquita Mutual Water Company El Dorado County |
63 | 0 | 0 | |
|
Lazy W Ranch Water System Orange County |
63 | 0 | 0 | |
|
Merced Fruit Barn Merced County |
63 | 0 | 0 | |
|
Mother Lode Water System El Dorado County |
63 | 2 | 0 | |
|
Rmrc-Eshom Campground Tulare County |
63 | 0 | 0 | |
|
88 Market & Grill San Joaquin County |
62 | 0 | 0 | |
|
Cascade Mutual Water Company El Dorado County |
62 | 0 | 0 | |
|
Dan R Costa INC (ws) San Joaquin County |
62 | 0 | 0 | |
|
Hill House at Trailborn Mendocino Mendocino County |
62 | 0 | 0 | |
|
Murray Family Farms at General Beale RD Kern County |
62 | 0 | 0 | |
|
Psea Camp Almanor Plumas County |
62 | 0 | 0 | |
|
Quail Ridge RV Park Yuba County |
62 | 0 | 0 | |
|
Sangiacomo Winery Sonoma · Sonoma County |
62 | 0 | 0 | |
|
Scribe Winery Sonoma County |
62 | 0 | 0 | |
|
Spring Hills Golf Course Santa Cruz County |
62 | 0 | 0 | |
|
Twentynine Palms Inn San Bernardino County |
62 | 1 | 0 | |
|
Wampum Hill Trailer Village Mariposa County |
62 | 0 | 0 | |
|
Yolo Bypass Wildlife Area Yolo County |
62 | 1 | 0 | |
|
Buckhorn Camp Riverside County |
61 | 1 | 0 | |
|
Destiny McIntyre RV Campground Riverside County |
61 | 0 | 0 | |
|
Flow Restaurant Mendocino County |
61 | 0 | 0 | |
|
K Barr Daughters Water System Sonoma County |
61 | 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.