Tapcensus

All water systems in California

7,380 systems

SystemServesStatusRules violated, 3 yrUnresolved
Panaderia la Cabana
Tulare County 		155 1 0
Picacho State Reservation Area
Imperial County 		155 0 0
Punjabi Dhaba
Solano County 		155 0 0
Sunol Super Stop
Alameda County 		155 0 0
Albion Field Station
Mendocino County 		154 0 0
Butano Girl Scout Camp
San Mateo County 		154 0 0
Camp Ross Relles
Nevada County 		154 1 0
Clear Water Mutual Water Company
Lake County 		154 0 0
Firestone Business Park WS
Monterey County 		154 2 1
Gateway Market Water System
Kern County 		154 0 0
Muller Mutual Water Company
Tuolumne County 		154 1 0
Rough & Ready Village
Nevada County 		154 1 0
South Fork Elementary School Water Sys
Kern County 		154 0 0
Burney Falls/hat Creek KOA
Shasta County 		153 0 0
Golden Bear RV Park
Del Norte County 		153 1 0
Kashia
County 		153 7 0
Olive Lane Mobilehome Park
Stanislaus County 		153 0 0
Stanford Inn by the Sea
Mendocino County 		153 0 0
Woods, the (mendocino)
Mendocino County 		153 0 0
Bella Lago Mobile Home Park
Lake County 		152 2 2
Cal AM Water Company Garrapata
Monterey County 		152 0 0
Camp Alandale at Sky Meadows
San Bernardino County 		152 1 0
Folsom Lake Sra Mississippi Bar
Sacramento County 		152 0 0
Grizzly Creek Sp-State Parks
Humboldt County 		152 0 0
Lakehead Campground & RV Park
Shasta County 		152 1 0
Merced Adventist Church Water Sys.
Merced County 		152 0 0
Pier 1900 Homeowner's Association
Lake County 		152 1 1
Quail Valley Recreational Village
Tulare County 		152 0 0
Rancho Market
Madera County 		152 0 0
Redwood Valley Rancheria
County 		152 4 1
Stone Creek Water Company
Riverside County 		152 2 2
Summit Mutual Water Company
Santa Cruz County 		152 1 0
The Manor Estate
Madera County 		152 0 0
Antlers Resort & RV Park
Shasta County 		151 0 0
Baptist Christian Camp of CA
Yuba County 		151 0 0
Black Butte Lk, Orland Buttes Campground
Glenn County 		151 0 0
Bud Antle, Llc Marina Facility WS
Monterey County 		151 3 2
Donner Mine Camp INC
Nevada County 		151 2 0
Hidden Falls Girl Scout Camp
Santa Cruz County 		151 1 0
Liberty 1st Ward Meeting House
Butte County 		151 0 0
Marin Sierra Boy Scouts of America
Nevada County 		151 0 0
McUsd Sierra Foothill Charter School
Mariposa County 		151 0 0
Olympic Valley Mwc
Placer County 		151 0 0
Salt Creek Summer Homes
Shasta County 		151 0 0
Sonoma Ranch Mutual Water Company
Sonoma County 		151 1 1
Sonoma State U.-Fairfield Osborn Pres
Sonoma County 		151 0 0
5 Mile House
Nevada County 		150 0 0
Acton-Agua Dulce Lds Church
Los Angeles County 		150 0 0
Adam's Market
Fresno County 		150 0 0
Anderson Tucker Oaks Golf
Shasta 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.