All water systems in California
284 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Usfs Angeles NF Nc Jackson Lake · San Diego County |
25 | 0 | 0 | |
|
Usfs Inyo NF Nc Tioga Lake · Los Angeles County |
25 | 0 | 0 | |
|
Usfs Inyo NF Nc Silver Lake · Sutter County |
25 | 0 | 0 | |
|
Usfs Inyo NF Nc Ellery Lake · Los Angeles County |
25 | 0 | 0 | |
|
Usfs Inyo NF Nc Tioga Lake · Sutter County |
25 | 0 | 0 | |
|
Usfs Inyo NF Nc Gull Lake Da · Monterey County |
25 | 0 | 0 | |
|
Usfs Inyo NF Nc Gull Lake Da · Sutter County |
25 | 0 | 0 | |
|
Usfs Inyo NF Nc Grant Lake P · Los Angeles County |
25 | 0 | 0 | |
|
Usfs Inyo NF Nc Convict Lake · Monterey County |
25 | 0 | 0 | |
|
Usfs Inyo NF Nc Ellery Lake · Sutter County |
25 | 0 | 0 | |
|
Usfs Inyo NF Nc Convict Lake · Sutter County |
25 | 0 | 0 | |
|
Usfs Inyo NF Nc Grant Lake P · Sutter County |
25 | 0 | 0 | |
|
Usfs Inyo NF Nc Silver Lake · Sutter County |
25 | 0 | 0 | |
|
Usfs Inyo NF Nc Twin Lakes C · Sutter County |
25 | 0 | 0 | |
|
Usfs Mendocino NF Lakeview Cg · Riverside County |
25 | 0 | 0 | |
|
Usfs San Bernardino NF Nc Lake Fulmore · San Bernardino County |
25 | 0 | 0 | |
|
Usfs Sequoia NF Nc Hume Lake · Los Angeles County |
25 | 0 | 0 | |
|
Wanda Blake Siskiyou County |
25 | 0 | 0 | |
|
Westlake Farms Camp 22 Kings County |
25 | 0 | 0 | |
|
Westlake Farms Camp Rojo Kings County |
25 | 0 | 0 | |
|
Westlake Farms Hqts/cotton Gin Kings County |
25 | 0 | 0 | |
|
Wilderness Lakes County |
25 | 0 | 0 | |
|
Yurok Blake County |
25 | 2 | 2 | |
|
Caltrans-Caples Lake Maintenance Station Alpine County |
24 | 1 | 1 | |
|
Lake Davis Resort County |
24 | 0 | 0 | |
|
Quail Lodge Lake Almanor Plumas County |
24 | 0 | 0 | |
|
Lake Elowin Resort Tulare County |
21 | 0 | 0 | |
|
Leonard Lake Mendocino County |
21 | 0 | 0 | |
|
Cave Lake Campground Modoc County |
20 | 0 | 0 | |
|
Lake Earl Grocery Del Norte County |
20 | 0 | 0 | |
|
Night Crawlers Campground, Lake Davis Plumas County |
20 | 0 | 0 | |
|
Round Valley Lake Resort County |
20 | 0 | 0 | |
|
Westlake Sda School Lake County |
20 | 0 | 0 | |
|
Almanor Lake Estates Mwc Lassen County |
18 | 0 | 0 | |
|
Bass Lake MHP Madera County |
17 | 0 | 0 | |
|
Forest Lake Water Company County |
17 | 0 | 0 | |
|
Crater Lake Cg, Lassen NF Lassen County |
16 | 0 | 0 | |
|
Lake Arthur Cabins Placer County |
16 | 0 | 0 | |
|
Honey Lake Ranch Lassen County |
15 | 0 | 0 | |
|
Lake Alpine Improvement Assn 2/bee Gulch County |
15 | 0 | 0 | |
|
Lakeview Estates Mutual Water Lake County |
13 | 0 | 0 | |
|
Silver Dunes Ski Lake San Bernardino County |
13 | 0 | 0 | |
|
Lakeview Water CO San Bernardino County |
12 | 0 | 0 | |
|
Coachella Vwd-Lake Cahuilla Riverside County |
10 | 0 | 0 | |
|
June Lake Preschool Mono County |
10 | 0 | 0 | |
|
Matilija Lake Park Santa Barbara County |
10 | 0 | 0 | |
|
West Lakeview Improvement Assn County |
9 | 0 | 0 | |
|
Csp-Clearlake State Park County |
8 | 0 | 0 | |
|
Cal Dept of Water Resources Silverwood Lake · Sacramento County |
7 | 0 | 0 | |
|
Lake Tulloch Water System Numb County |
7 | 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.