All water systems in California
2,996 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Santa Ysabel Nature Center San Diego · San Diego County |
248 | 0 | 0 | |
|
Big Meadow Campground Mono County |
247 | 0 | 0 | |
|
Larrupin Cafe Humboldt County |
247 | 1 | 1 | |
|
Autocamp Sequoia Tulare County |
246 | 0 | 0 | |
|
Rmrc-Stony Creek Campground Tulare County |
246 | 0 | 0 | |
|
Jehovah's Witnesses Kingdom Hall Yolo County |
245 | 3 | 0 | |
|
Lava Beds National Monument Siskiyou County |
245 | 0 | 0 | |
|
Snowflower Placer County |
245 | 1 | 0 | |
|
Mountain Valley Community Church Fresno County |
242 | 0 | 0 | |
|
Tecopa Water Vending Machine Inyo County |
241 | 2 | 0 | |
|
Ash Creek Fire Station-Stnf Siskiyou County |
240 | 0 | 0 | |
|
Cal Shasta Club San Luis Obispo County |
240 | 0 | 0 | |
|
Dante Club of Fresno Fresno County |
240 | 0 | 0 | |
|
Lassen Vnp Butte Lake Tehama County |
240 | 0 | 0 | |
|
Nps-Cold Springs Tulare County |
240 | 0 | 0 | |
|
Rmrc-Hospital Flat Campground Tulare County |
240 | 0 | 0 | |
|
Caspers Regional Wilderness Park Orange County |
239 | 0 | 0 | |
|
Fishcamp Mutual Water Company Mariposa County |
239 | 0 | 0 | |
|
Kennolyn Camp Santa Cruz County |
239 | 0 | 0 | |
|
Camp Lakota Water System Kern County |
238 | 0 | 0 | |
|
Sycamore Ranch (exempt) Yuba County |
238 | 0 | 0 | |
|
Csp-Hendy Woods State Park Mendocino County |
236 | 0 | 0 | |
|
Folded Hills Winery Santa Barbara County |
235 | 1 | 0 | |
|
Freedom Ranch San Diego County |
235 | 0 | 0 | |
|
Nps-Hospital Rock Tulare County |
232 | 0 | 0 | |
|
Fossil Discovery Center Madera County |
231 | 0 | 0 | |
|
YMCA Camp Arbolado San Bernardino County |
231 | 0 | 0 | |
|
Famoso Fuel Stop Kern County |
230 | 0 | 0 | |
|
Foothill Horizons Tuolumne County |
230 | 0 | 0 | |
|
Madera CO Sa02-Wishon Cove Madera County |
230 | 0 | 0 | |
|
Miller's Landing Resort Madera County |
230 | 1 | 0 | |
|
Pinewood Cove Resort Trinity County |
230 | 0 | 0 | |
|
San Jose Family Camp Tuolumne County |
230 | 0 | 0 | |
|
Usfs Fraser Flat Campgd Tuolumne County |
228 | 1 | 0 | |
|
Sierra Pines Camp El Dorado County |
226 | 2 | 0 | |
|
EL Torero Restaurant Calaveras County |
225 | 0 | 0 | |
|
Mountain Summit Mutual Water System Santa Cruz County |
223 | 0 | 0 | |
|
Sciots Tract Water System El Dorado County |
223 | 0 | 0 | |
|
Rmrc-Goldledge Campground Tulare County |
222 | 0 | 0 | |
|
Sylvan Harbor Trailer Park Humboldt County |
221 | 1 | 0 | |
|
Lower Bucks Lake Lds Camp Plumas County |
220 | 0 | 0 | |
|
Ripplewood Resort WS Monterey County |
220 | 0 | 0 | |
|
The Oaks Venture, LLC San Diego County |
220 | 0 | 0 | |
|
The Peg House Mendocino County |
220 | 0 | 0 | |
|
Wolf Lakes Park Fresno County |
220 | 1 | 0 | |
|
Armenian Church Camp Fresno County |
218 | 2 | 0 | |
|
Merced River Resort Merced County |
218 | 1 | 0 | |
|
Mid MC Clure Point Rec Area Mariposa County |
218 | 0 | 0 | |
|
Old Oak Ranch Tuolumne County |
217 | 1 | 0 | |
|
Coyote Lake County Park Santa Clara County |
216 | 1 | 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.