Tapcensus

All water systems in California

7,380 systems

SystemServesStatusRules violated, 3 yrUnresolved
Nps-Atwell Mill
Tulare County 		80 0 0
Pajaro Valley Greenhouse WS
Monterey County 		80 2 1
Pg&e Cassel Campground
Shasta County 		80 0 0
Pineview Mobile Home Park
Lassen County 		80 2 1
Pioneer Hi-Bred International
Yolo County 		80 0 0
Pnf Big Cove CG
Plumas County 		80 1 0
Portola Improvement Association Mwc
San Mateo County 		80 1 0
Redwood Empire Sawmill
Sonoma County 		80 0 0
River Valley Christian School
Glenn County 		80 1 0
Round Valley School
Inyo County 		80 0 0
Sacramento River RV Park
Shasta County 		80 0 0
Sakata Seed Woodland Station
Woodland · Yolo County 		80 0 0
Salt & Stone Restaurant
Sonoma County 		80 0 0
Sequoia RV Ranch
Tulare County 		80 0 0
Shaver Lake Point 2
Fresno County 		80 0 0
Shepherd of the Hills
Los Angeles County 		80 0 0
Sierra Reach Ministries
Placer County 		80 0 0
Sobre Vista Water Company
Sonoma County 		80 1 1
Sonoma Valley Moose Lodge #2048
Sonoma County 		80 0 0
Stone Corral Community Church
Calaveras County 		80 0 0
Shackleford Creek Community Water System
County 		80 5 0
Teixeira Farms Frontier Cooling
Santa Barbara County 		80 1 0
The Patch Fruit Stand
Kern County 		80 0 0
Turner Road Vintners (east)
San Joaquin County 		80 1 0
Uplands of the Kern Mutual Water Company
Kern County 		80 0 0
Usda Agricultural Research Service
Fresno County 		80 1 1
Usfs Bailey Cove Campground
Shasta County 		80 0 0
Usfs-Fish Creek Campground
Tulare County 		80 0 0
Usfs-Horse Meadow Campground
Tulare County 		80 0 0
Valley Home School Texas
Stanislaus County 		80 1 1
Victor Valley Wastewater Reclam
San Bernardino County 		80 2 0
Vinwood Cellars Production Area
Sonoma County 		80 0 0
Yosemite Vista Estates
Tuolumne County 		80 2 1
Zoo Med-Winterhaven
Cayucos · San Luis Obispo County 		80 1 0
Aera Energy LLC WS
Monterey County 		79 0 0
Clio Public Utility District
Plumas County 		79 1 1
Hills Ranch Mutual Water Company
Mendocino County 		79 0 0
Hunewill's Doc and Al's Resort
Mono County 		79 0 0
Kkottongnae Retreat Camp
Riverside County 		79 0 0
Leland Creek Improvement Assoc
Tuolumne County 		79 1 0
Owens Peak West
Kern County 		79 0 0
Terra Linda Farms
Fresno County 		79 0 0
Vista Grande Water Users Association
Santa Clara County 		79 0 0
Big Rise Village
Shasta County 		78 2 1
Blackie RD WS #05
Monterey County 		78 0 0
Csa 29 Midway Park
San Bernardino County 		78 1 0
Hope Valley Resort
Alpine County 		78 0 0
Loch Lomond Rec Area Santa Cruz WD
Santa Cruz County 		78 0 0
Marions Ranch House Motel
San Joaquin County 		78 0 0
Rambling Hills Estates
Tuolumne County 		78 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.