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California: drinking water systems
The 2,920 active community water systems in California on EPA's record, serving 39,989,877 people (EPA's counts). Systems serving more than 500 people have their own page; find yours by name, city, county, ZIP code or PWS ID. EPA's file dated Oct. 23, 2026.
727
727 of 2,920 systems have a health-based violation on EPA's record since Oct. 23, 2023, serving 1,835,646 of the state's 39,989,877 people (5%); 32 are an EPA enforcement priority. EPA lists 505 as currently in violation (EPA's system file of Oct. 23, 2026).
Health-based violations, in EPA's words: “Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.”Find your water system
Health-based violations since Oct. 23, 2023, by contaminant or rule
Cities and counties EPA lists, A to Z
The cities EPA lists as served by each system, with the number of systems that list each; a system for which EPA lists no city is under its county.
Alameda (county) 11Amador (county) 17Butte (county) 40Calaveras (county) 18Colusa (county) 7Contra Costa (county) 35Del Norte (county) 14El Dorado (county) 18FOLSOM 2Fresno (county) 88Glenn (county) 10Humboldt (county) 38Imperial (county) 23Inyo (county) 43JACKSON 2Kern (county) 160Kings (county) 8Lake (county) 42Lassen (county) 14Los Angeles (county) 153MADERA 3Madera (county) 64Marin (county) 14Mariposa (county) 11Mendocino (county) 38Merced (county) 16MIDWAY CITY 2MODESTO 10Modoc (county) 4MONTEBELLO 2Monterey (county) 152Napa (county) 24Nevada (county) 19Orange (county) 21Placer (county) 47Plumas (county) 26Riverside (county) 86Sacramento (county) 58San Benito (county) 29San Bernardino (county) 135San Diego (county) 77San Francisco (county) 5San Joaquin (county) 85SAN JOSE 3San Luis Obispo (county) 71San Mateo (county) 28Santa Barbara (county) 60Santa Clara (county) 62Santa Cruz (county) 51SANTA FE SPRINGS 2Shasta (county) 57Siskiyou (county) 24Solano (county) 20Sonoma (county) 119Stanislaus (county) 44STOCKTON 2Sutter (county) 6TAHOE CITY 4Tehama (county) 46Trinity (county) 17Tulare (county) 84Tuolumne (county) 48VALLEJO 2Ventura (county) 67Yolo (county) 11Yuba (county) 21
Counties
A page for each county EPA lists for three or more systems with a page of their own: the systems that serve it and how each stands on EPA's record.
Alameda County 14Amador County 20Butte County 42Calaveras County 19Colusa County 9Contra Costa County 39Del Norte County 16El Dorado County 19Fresno County 102Glenn County 13Humboldt County 44Imperial County 29Inyo County 44Kern County 167Kings County 13Lake County 43Lassen County 15Los Angeles County 199Madera County 68Marin County 14Mariposa County 11Mendocino County 42Merced County 22Modoc County 5Monterey County 157Napa County 28Nevada County 21Orange County 40Placer County 52Plumas County 27Riverside County 94Sacramento County 62San Benito County 31San Bernardino County 147San Diego County 82San Francisco County 5San Joaquin County 93San Luis Obispo County 72San Mateo County 36Santa Barbara County 63Santa Clara County 73Santa Cruz County 52Shasta County 60Siskiyou County 32Solano County 26Sonoma County 129Stanislaus County 61Sutter County 8Tehama County 49Trinity County 17Tulare County 91Tuolumne County 49Ventura County 68Yolo County 16Yuba County 22
Systems with no city or county on EPA's record, A to Z (89)
- Aguirre MHP60 peoplePWS ID 090600033Health-based violation since Oct. 23, 2023
- Angelique Maelee Properties50 peoplePWS ID 090600043Health-based violation since Oct. 23, 2023
- Arellano MHP30 peoplePWS ID 090600023
- Arviso - Mobile Home Park70 peoplePWS ID 090605121
- Avi Casino3,001 peoplePWS ID 090400302Health-based violation since Oct. 23, 2023EPA lists a current health-based violationEPA enforcement priority
- Avi Kwa Ame Farms North40 peoplePWS ID 090400304Health-based violation since Oct. 23, 2023EPA lists a current health-based violationEPA enforcement priority
- Barajas MHP25 peoplePWS ID 090600031
- Bear River/Singley Hill1,530 peoplePWS ID 090605125
- Big Valley Rancheria Water District417 peoplePWS ID 090605164Lead action level exceeded (2×, 5 years)
- California Village1,290 peoplePWS ID 090600237
- Campo Church Road System (HUD Homes)400 peoplePWS ID 090605045
- Castro Ranch44 peoplePWS ID 090600027
- Chemehuevi Water2,200 peoplePWS ID 090600125
- Colusa Northern System67 peoplePWS ID 090605046
- Colusa Southern System3,474 peoplePWS ID 090605047
- Coyote Valley System850 peoplePWS ID 090600030
- DD Mobile Home Park275 peoplePWS ID 090605160Health-based violation since Oct. 23, 2023EPA lists a current health-based violationEPA enforcement priority
- Desert Rose MHP30 peoplePWS ID 090600039Health-based violation since Oct. 23, 2023
- Duro Water System35 peoplePWS ID 090605168
- El Mesquite MHP48 peoplePWS ID 090600034
- Fort Bidwell Reservation88 peoplePWS ID 090600128
- Gamez MHP48 peoplePWS ID 090600029
- Garcia MHP25 peoplePWS ID 090600037
- Gonzalez MHP41 peoplePWS ID 090600022
- Grindstone Rancheria150 peoplePWS ID 090605004Health-based violation since Oct. 23, 2023EPA lists a current health-based violationEPA enforcement priority
- Havasu Water Company361 peoplePWS ID 090600202Health-based violation since Oct. 23, 2023EPA lists a current health-based violationEPA enforcement priority
- Indian Village35 peoplePWS ID 090605154Health-based violation since Oct. 23, 2023EPA lists a current health-based violationEPA enforcement priority
- Kashia153 peoplePWS ID 090600135Health-based violation since Oct. 23, 2023
- La Cienega MHP30 peoplePWS ID 090600041
- La Jolla Eastern1,076 peoplePWS ID 090605007
- La Jolla Western296 peoplePWS ID 090605008
- La Posta Lower Community60 peoplePWS ID 090600056
- La Posta Upper73 peoplePWS ID 090605146Health-based violation since Oct. 23, 2023
- Los Coyotes114 peoplePWS ID 090605147
- Lytton Rancheria Water System600 peoplePWS ID 090600260
- Manchester Rancheria100 peoplePWS ID 090600139
- Mesa Grande (Tract 2)43 peoplePWS ID 090605011
- Mesa Grande - Black Canyon81 peoplePWS ID 090605132Health-based violation since Oct. 23, 2023
- Mesquite Creek650 peoplePWS ID 090400301
- Middletown Rancheria Community Water System487 peoplePWS ID 090600141Health-based violation since Oct. 23, 2023EPA lists a current health-based violation
- Montano Ranch72 peoplePWS ID 090600038
- Mora MHP25 peoplePWS ID 090600025
- Morongo16,000 peoplePWS ID 090600142
- Oasis Mobile Home Park826 peoplePWS ID 090605129Health-based violation since Oct. 23, 2023
- Original Sherwood Valley Rancheria60 peoplePWS ID 090605021
- Pala North14,280 peoplePWS ID 090605153Health-based violation since Oct. 23, 2023EPA lists a current health-based violationEPA enforcement priority
- Pala South360 peoplePWS ID 090600144Health-based violation since Oct. 23, 2023EPA lists a current health-based violation
- Pauma5,700 peoplePWS ID 090605012
- Pechanga29,100 peoplePWS ID 090605013
- Point Arena Rancheria616 peoplePWS ID 090600145
- Pulikla Tribe70 peoplePWS ID 090605057
- Ramon Zaragoza Water51 peoplePWS ID 090600036
- Rancho Villanueva LLC68 peoplePWS ID 090605145
- Ranchos Los Ferro MHP41 peoplePWS ID 090600032
- Redding Rancheria2,015 peoplePWS ID 090605083Health-based violation since Oct. 23, 2023EPA enforcement priority
- Redwood Valley Rancheria152 peoplePWS ID 090605118Health-based violation since Oct. 23, 2023EPA lists a current health-based violation
- Rincon Northern7,003 peoplePWS ID 090600147
- Rincon Paradise Creek305 peoplePWS ID 090600146
- River Reflections Estates267 peoplePWS ID 090600194
- Rodriguez MHP45 peoplePWS ID 090600040
- Round Valley Agency84 peoplePWS ID 090605073Health-based violation since Oct. 23, 2023EPA lists a current health-based violation
- Round Valley Piner409 peoplePWS ID 090605015Health-based violation since Oct. 23, 2023EPA lists a current health-based violation
- Ruiz MHP46 peoplePWS ID 090600035
- San Felipe Water System52 peoplePWS ID 090600115
- San Pasqual District A1,225 peoplePWS ID 090605017
- San Pasqual District B705 peoplePWS ID 090605080
- Sandoval MHP38 peoplePWS ID 090600026
- Santa Rosa Reservation205 peoplePWS ID 090605019
- Santa Ysabel Main325 peoplePWS ID 090600150
- Shackleford Creek Community Water System80 peoplePWS ID 090605102
- Shanel Tribal Utility District250 peoplePWS ID 090600133
- Soboba3,000 peoplePWS ID 090600151
- South Campo63 peoplePWS ID 090600059
- Sycuan12,350 peoplePWS ID 090605024
- Table Bluff (New) Reservation230 peoplePWS ID 090605124Health-based violation since Oct. 23, 2023EPA lists a current health-based violation
- Toledo MHP68 peoplePWS ID 090600021Health-based violation since Oct. 23, 2023EPA lists a current health-based violationEPA enforcement priority
- Torres-Martinez Avenue 64110 peoplePWS ID 090605116
- Torres-Martinez Clinic379 peoplePWS ID 090605130
- Tule River Apple Valley25 peoplePWS ID 090605074
- Turner Trailer Park70 peoplePWS ID 090605122EPA enforcement priority
- Upper Lake Hardisty System98 peoplePWS ID 090605025
- Vargas MHP35 peoplePWS ID 090600042
- Yocha Dehe Potable Water System12,800 peoplePWS ID 090605107
- Yurok - Kepel76 peoplePWS ID 090605033Health-based violation since Oct. 23, 2023EPA lists a current health-based violation
- Yurok - McCoy - Kenek30 peoplePWS ID 090600161Health-based violation since Oct. 23, 2023
- Yurok - Requa215 peoplePWS ID 090605014Health-based violation since Oct. 23, 2023EPA lists a current health-based violation
- Yurok - Terwer Water System300 peoplePWS ID 090605143
- Yurok - Wautec96 peoplePWS ID 090600134Health-based violation since Oct. 23, 2023
- Yurok - Weitchpec120 peoplePWS ID 090605006Health-based violation since Oct. 23, 2023
Water systems with a page of their own, A to Z (1,143)
- A.F.P. MUTUAL WATER COMPANY
- ADELANTO, CITY OF
- ADVENTIST HEALTH - ST. HELENA HOSPITAL
- AGATE BAY WATER COMPANY
- ALAMEDA COUNTY WATER DISTRICT
- ALAMEDA POINT
- ALCO WATER SERVICE
- ALLENSWORTH CSD
- ALPAUGH COMMUNITY SERVICES DISTRICT
- ALPINE WATER USERS ASSOCIATION
- AMARILLO MUTUAL WATER COMPANY
- AMERICAN CANYON, CITY OF
- AMERICAN VALLEY CSD
- AMERICAN WATER O&M, LLC - VSFB
- ANGELS, CITY OF
- ANTELOPE VALLEY E KERN WTR AGY-ROSAMOND
- APPLE VALLEY FOOTHILL CWD
- APPLE VALLEY HEIGHTS CWD
- ARBUCKLE PUBLIC UTILITY DISTRICT
- ARCATA, CITY OF
- ARMONA COMMUNITY SERVICES DIST
- ARMSTRONG VALLEY-CAL WATER SERVICE (PUC)
- AROMAS WATER DISTRICT
- ARROWBEAR PARK CWD
- ARROWHEAD VILLAS MUTUAL SERVICE COMPANY
- ARVIN COMMUNITY SERVICES DIST
- ATASCADERO MUTUAL WATER CO
- ATASCADERO STATE HOSPITAL
- AVENAL, CITY OF
- AVERYDALE MWC
- Avi Casino
- AVILA BEACH COMMUNITY SERVICES DISTRICT
- AWA - CAMANCHE VILLAGE
- AWA BUCKHORN PLANT
- AWA, IONE
- AWA, TANNER
- AZUSA LIGHT AND WATER
- BAKER COMMUNITY SERVICES DISTRICT
- BAKERSFIELD, CITY OF
- BAKMAN WATER COMPANY
- BAKMAN WATER-ROLLING HILLS
- BANNING HTS. MUTUAL WATER CO.
- BANNING, CITY OF
- Barona North
- BDVWA - GOAT MOUNTAIN ID
- BEALE AIR FORCE BASE
- Bear River - Tish Non Village
- Bear River/Singley Hill
- BEAR VALLEY CSD
- BEAUMONT CHERRY VALLEY WD
- BELLA VISTA WATER DISTRICT
- BELLFLOWER - SOMERSET MWC
- BELLFLOWER HOME GARDEN WATER COMPANY
- BELLFLOWER MUNICIPAL WATER SYSTEM
- BERRYESSA HIGHLANDS
- BERTSCH OCEAN VIEW CSD
- BEVERLY HILLS-CITY, WATER DEPT.
- BIG BASIN WATER COMPANY
- BIG BEAR CITY CSD
- BIG BEAR LAKE DWP - BIG BEAR SYSTEM
- BIG PINE CSD
- Big Pine Paiute Band
- Big River Development
- BIG ROCK C.S.D.
- BIGHORN - DESERT VIEW WATER AGENCY
- BIOLA COMMUNITY SERVICES DIST
- Bishop Paiute-Shoshone Tribe
- BISHOP, CITY OF
- BLUE LAKE SPRINGS MUT WTR
- BLUE LAKE, CITY OF
- BLYTHE - CITY OF
- BLYTHE - MESA RANCH
- BODEGA BAY PUBLIC UTILITY DISTRICT
- BOLINAS COMMUNITY PUD
- BORON CSD
- BORREGO WD
- BOX SPRINGS MUTUAL WC
- BRANDEIS BARDIN INSTITUTE
- BRAWLEY, CITY OF
- BRENTWOOD
- BROOKTRAILS TOWNSHIP CSD
- BUCKINGHAM PARK WATER DISTRICT
- BURBANK-CITY, WATER DEPT.
- BURNEY WATER DISTRICT
- BUTTONWILLOW CWD
- CABAZON WATER DISTRICT
- CAL AM - ANTELOPE
- CAL AM - ARDEN
- CAL AM - BASS LAKE
- CAL AM - DUNNIGAN
- CAL AM - FRUITRIDGE VISTA
- CAL AM - GOLDSIDE
- CAL AM - ISLETON
- CAL AM - LINCOLN OAKS
- CAL AM - MEADOWBROOK
- CAL AM - OAKHURST
- CAL AM - PARKWAY
- CAL AM - SUBURBAN ROSEMONT
- CAL AM - WALNUT GROVE
- CAL AM - WEST PLACER
- CAL AM - WEST SAN MARTIN
- CAL AM WATER COMPANY - AMBLER PARK
- CAL AM WATER COMPANY - CHUALAR
- CAL AM WATER COMPANY - HIDDEN HILLS
- CAL AM WATER COMPANY - MONTEREY
- CAL AM WATER COMPANY - TORO
- CAL AMERICAN - YERBA BUENA
- CAL AMERICAN WATER CO
- CAL AMERICAN WATER COMPANY - PIRU
- CAL AMERICAN WC - LAS POSAS ESTATES
- CAL AMERICAN WC - RIO PLAZA
- CAL-AM WATER COMPANY - DUARTE
- CAL-AM WATER COMPANY - EAST PASADENA
- CAL-AM WATER CORONADO
- CAL-WATER SERVICE CO.-CHICO
- CAL-WATER SERVICE CO.-HAMILTON CITY
- CAL-WATER SERVICE CO.-MARYSVILLE
- CAL-WATER SERVICE CO.-OROVILLE
- CAL-WATER SERVICE CO.-WILLOWS
- CAL/AM WATER COMPANY - BALDWIN HILLS
- CAL/AM WATER COMPANY - SAN MARINO
- CALAVERAS PUD
- CALEXICO, CITY OF
- CALIF STATE POLYTECHNICAL UNIV - POMONA
- CALIFORNIA CITY, CITY OF
- CALIFORNIA INSTITUTION FOR MEN
- CALIFORNIA INSTITUTION FOR WOMEN
- CALIFORNIA MENS COLONY
- CALIFORNIA REHABILITATION CENTER - NORCO
- CALIFORNIA STATE PRISON - SOLANO
- CALIFORNIA STATE UNIVERSITY FRESNO
- California Village
- CALIFORNIA WATER SERVICE - BEAR GULCH
- CALIFORNIA WATER SERVICE - LIVERMORE
- CALIFORNIA WATER SERVICE - SAN CARLOS
- CALIFORNIA WATER SERVICE - SAN MATEO
- CALIFORNIA WATER SERVICE - STOCKTON
- CALIFORNIA WATER SERVICE CO - WESTLAKE
- CALIFORNIA WATER SERVICE CO-LAKE HUGHES
- CALIFORNIA WATER SERVICE CO-LEONA VALLEY
- CALIFORNIA WATER SERVICE CO. - DIXON
- CALIFORNIA WATER SERVICE CO. - DOMINGUEZ
- CALIFORNIA WATER SERVICE CO. - ELA
- CALIFORNIA WATER SERVICE CO. - HERM/REDO
- CALIFORNIA WATER SERVICE CO. - PALOS VER
- CALIFORNIA WATER SERVICE CO.-LANCASTER
- CALIFORNIA WATER SERVICE CO.-TRAVIS AFB
- CALIFORNIA WATER SERVICE-S SAN FRANCISCO
- CALIFORNIA-AMERICAN GEYSERVILLE (PUC)
- CALIFORNIA-AMERICAN LARKFIELD (PUC)
- CALIPATRIA STATE PRISON
- CALISTOGA, CITY OF
- CALLAYOMI COUNTY WATER DISTRICT
- CALPELLA COUNTY WATER DISTRICT
- CAMARILLO WATER DEPT
- CAMBRIA COMM SERVICES DIST
- CAMP MEEKER WATER SYSTEM
- CAMP PENDLETON (NORTH)
- CAMP PENDLETON (SOUTH)
- CAMROSA WATER DISTRICT
- CANON MANOR WATER SYSTEM
- CARLSBAD MWD
- CARMEL RIVIERA MWC
- CARMICHAEL WATER DISTRICT
- CARPINTERIA VALLEY WATER DISTRICT
- CARUTHERS COMM SERV DIST
- CARVER TRACT MUTUAL WATER COMP
- CASITAS MUNICIPAL WATER DIST
- CASTLEWOOD DOMESTIC WATER SYSTEM
- CASTROVILLE COMMUNITY SERVICES DISTRICT
- CAYUCOS BEACH MUTUAL WATER COMPANY
- CAZADERO WATER COMPANY, INC. (PUC)
- CCI - TEHACHAPI
- CCWD - COPPER COVE
- CCWD - EBBETTS PASS
- CCWD - JENNY LIND
- CCWD - WEST POINT
- CDCR - SIERRA CONSERVATION CENTER
- CDCR CALIFORNIA HEALTH CARE FACILITY
- CDCR-HIGH DESERT STATE PRISON
- CEDARPINES PARK MWC
- CEDARVILLE COUNTY WATER DIST.
- CENTERVILLE C.S.D.
- CENTINELA STATE PRISON
- CENTRAL CA WOMENS FACILITY
- CENTRAL WATER DISTRICT
- CERES, CITY OF
- CERRITOS - CITY, WATER DEPT.
- CHANNEL ISLANDS BEACH CSD
- Chemehuevi Water
- CHESTER PUBLIC U.D.
- CHINA LAKE NAVAL AIR WEAPONS STATION
- CHINO HILLS, CITY OF
- CHINO, CITY OF
- CHIRIACO SUMMIT WATER DIST.
- CHOWCHILLA CITY WATER DEPT
- CHRISTIAN VALLEY PARK CSD
- CHUCKAWALLA VALLEY STATE PRISON
- CITRUS HEIGHTS WATER DISTRICT
- CITY OF ALHAMBRA
- CITY OF ALTURAS
- CITY OF ANAHEIM
- CITY OF ANDERSON
- CITY OF ANTIOCH
- CITY OF ARCADIA
- CITY OF ARROYO GRANDE UTILITIES DIVISION
- CITY OF ATWATER
- CITY OF BELL GARDENS
- CITY OF BENICIA
- CITY OF BIGGS
- CITY OF BREA
- CITY OF BRISBANE
- CITY OF BUELLTON WATER DIVISION
- CITY OF BUENA PARK
- CITY OF BURLINGAME
- CITY OF CLOVIS
- CITY OF COLUSA
- CITY OF CORNING
- CITY OF CRESCENT CITY
- CITY OF CUPERTINO
- CITY OF DALY CITY
- CITY OF DAVIS
- CITY OF DIXON
- CITY OF DOS PALOS
- CITY OF EAST PALO ALTO
- CITY OF FAIRFIELD
- CITY OF FOUNTAIN VALLEY
- CITY OF FOWLER
- CITY OF FRESNO
- CITY OF FULLERTON
- CITY OF GARDEN GROVE
- CITY OF GILROY
- CITY OF GRASS VALLEY
- CITY OF GRIDLEY
- CITY OF GROVER BEACH PUBLIC WORKS DEPT
- CITY OF GUSTINE
- CITY OF HAYWARD
- CITY OF HUNTINGTON BEACH
- CITY OF INDUSTRY WATERWORKS SYSTEMS
- CITY OF JACKSON
- CITY OF LA HABRA
- CITY OF LA PALMA
- CITY OF LATHROP
- CITY OF LINCOLN
- CITY OF LIVE OAK
- CITY OF LIVERMORE
- CITY OF LIVINGSTON
- CITY OF LOS BANOS
- CITY OF LOYALTON
- CITY OF MADERA
- CITY OF MARTINEZ
- CITY OF MERCED
- CITY OF MILLBRAE
- CITY OF MILPITAS
- CITY OF MODESTO - DEL RIO
- CITY OF MODESTO - GRAYSON
- CITY OF MODESTO - SALIDA
- CITY OF MODESTO - SOUTH TURLOCK
- CITY OF MORGAN HILL
- CITY OF MOUNTAIN HOUSE
- CITY OF MOUNTAIN VIEW
- CITY OF NEVADA CITY
- CITY OF NEWMAN-WATER DEPARTMENT
- CITY OF NEWPORT BEACH
- CITY OF ORANGE
- CITY OF ORANGE COVE
- CITY OF ORLAND
- CITY OF PALO ALTO
- CITY OF PARLIER
- CITY OF PASO ROBLES WATER DIVISION
- CITY OF PITTSBURG
- CITY OF PLEASANTON
- CITY OF PORTOLA
- CITY OF RED BLUFF
- CITY OF REDDING
- CITY OF REDWOOD CITY
- CITY OF RIO VISTA
- CITY OF ROSEVILLE
- CITY OF SACRAMENTO MAIN
- CITY OF SAN BRUNO
- CITY OF SAN CLEMENTE
- CITY OF SAN JOSE - EVG/EDV/COY
- CITY OF SAN JOSE - NSJ/ALVISO
- CITY OF SANGER
- CITY OF SANTA ANA
- CITY OF SANTA BARBARA WATER DEPARTMENT
- CITY OF SANTA CLARA
- CITY OF SANTA MARIA UTILITIES DEPARTMENT
- CITY OF SANTA PAULA
- CITY OF SEAL BEACH
- CITY OF SHASTA LAKE
- CITY OF SOUTH PASADENA
- CITY OF STOCKTON
- CITY OF SUNNYVALE
- CITY OF SUSANVILLE
- CITY OF THOUSAND OAKS WATER DEPARTMENT
- CITY OF TUSTIN
- CITY OF VACAVILLE
- CITY OF VALLEJO
- CITY OF VALLEJO-LAKES SYSTEM
- CITY OF WATERFORD
- CITY OF WEST SACRAMENTO
- CITY OF WESTMINSTER
- CITY OF WHEATLAND
- CITY OF WILLIAMS
- CITY OF WINTERS
- CITY OF WOODLAND
- CITY OF YUBA CITY
- CLAWA
- CLAYTON PALMS WATER
- CLEAR CREEK CSD-ANDERSON
- CLEARLAKE OAKS COUNTY WATER DISTRICT
- CLOVERDALE, CITY OF
- COACHELLA VWD: COVE COMMUNITY
- COACHELLA VWD: I.D. NO. 8
- COACHELLA WATER AUTHORITY
- COALINGA-CITY
- COASTSIDE COUNTY WATER DISTRICT
- COBB AREA COUNTY WATER DISTRICT
- COLD SPRINGS WATER CO
- COLTON, CITY OF
- COLUSA CO. WWD #1 - GRIMES
- Colusa Southern System
- COMMERCE-CITY, WATER DEPT.
- COMPTON-CITY, WATER DEPT.
- CONTRA COSTA WATER DISTRICT
- CORCORAN, CITY OF
- CORONA, CITY OF
- CORRECTIONAL TRAINING FACILITY - SOLEDAD
- COTATI, CITY OF
- COTTONWOOD WATER DISTRICT
- COUNTRY LIFE MH & RV PARK
- COVINA-CITY, WATER DEPT.
- Coyote Valley System
- CRESCENTA VALLEY CWD
- CRESTLINE VILLAGE CWD - DIVISION 10
- CRESTVIEW MUTUAL WATER CO
- CSA 42 ORO GRANDE
- CSA 62
- CSA 70 W-3 HACIENDA
- CUCAMONGA VALLEY WATER DISTRICT
- CUESTA LA HONDA GUILD INC
- CUTLER PUD
- CUYAMA COMMUNITY SERVICES DISTRICT
- CWS - BAKERSFIELD
- CWS - KERNVILLE
- CWS - LOWER BODFISH WATER SYSTEM
- CWS - NORTH GARDEN
- CWS - SELMA
- CWS - TULCO WATER COMPANY
- CWS - VISALIA
- CWS SOUTHLAKE SYSTEM
- CWSC KING CITY
- CWSC LAS LOMAS
- CWSC LOS ALTOS SUBURBAN
- CWSC OAK HILLS
- CWSC SALINAS
- CWSC SALINAS HILLS
- DAGGETT COMM SVCS DIST
- DEER LODGE WATER SYSTEM
- DEL MAR, CITY OF
- DEL ORO RIVER ISLAND SERV TERR #1
- DEL ORO TRAVER DISTRICT
- DEL ORO WATER CO-FERNDALE
- DEL ORO WATER CO.-JOHNSON PARK
- DEL ORO WATER CO.-LIME SADDLE MARINA
- DEL ORO WATER CO.-PARADISE PINES
- DEL ORO WATER CO.-STIRLING BLUFFS
- DEL REY COMMUNITY SERV DIST
- DEL RIO MUTUAL
- DELANO, CITY OF
- DELHI CWD
- DEMPSEY ROAD MUTUAL WATER CO
- DENAIR COMMUNITY SERVICES DISTRICT
- DESCANSO COMMUNITY WATER DISTRICT
- DESERT LAKE COMM SERV DIST
- DESERT WATER AGENCY
- DEVORE WC
- DIABLO WATER DISTRICT
- DIAMOND A MUTUAL WATER COMPANY
- DINUBA, CITY OF
- DORRIS, CITY OF
- DOWNEY - CITY, WATER DEPT.
- DUBLIN SAN RAMON SERVICES DISTRICT
- DUCOR CSD
- DUNSMUIR, CITY OF
- DURHAM IRRIGATION DISTRICT
- DWP - FAWNSKIN
- EARLIMART PUD
- EAST BAY MUD
- EAST NILES CSD
- EAST ORANGE COUNTY WD - RZ
- EAST VALLEY WATER DISTRICT
- EASTERN MUNICIPAL WD
- EASTSIDE WATER ASSOCIATION
- EDWARDS AFB - MAIN BASE
- EL CENTRO, CITY OF
- EL DORADO ID - MAIN
- EL DORADO MUTUAL WATER CO.
- EL MONTE-CITY, WATER DEPT.
- EL SEGUNDO-CITY, WATER DEPT.
- EL TORO WATER DISTRICT
- ELK GROVE WATER DISTRICT
- ELSINORE VALLEY MWD
- ERSKINE CREEK WC
- ESCALON, CITY OF
- ESCONDIDO, CITY OF
- ESPARTO C.S.D.
- ESTERO MUNICIPAL IMPROVEMENT DISTRICT
- ETNA, CITY OF
- EUREKA, CITY OF
- EXETER, CITY OF
- FAIR OAKS WATER DISTRICT
- FAIROAKS PWS #44
- FALL RIVER VALLEY CSD
- FALLBROOK PUD
- FALLSVALE SERVICE COMPANY
- FARM MUTUAL W.C. (THE)
- FARMERSVILLE, CITY OF
- FCSA 34 - MILLERTON NEW TOWN
- FCSA 47 - QUAIL LAKE ESTATES
- FCWWD 18/FRIANT
- FCWWD 41/SHAVER LAKE
- FERN VALLEY WD
- FIELDBROOK GLENDALE C.S.D.
- FILLMORE WATER DEPT
- FIREBAUGH CITY
- FIRST MACE MEADOW # 1
- FLORIN COUNTY WATER DISTRICT
- FOLSOM STATE PRISON
- FOLSOM, CITY OF - ASHLAND
- FOLSOM, CITY OF - MAIN
- FOREST LAKES MWC
- FORESTHILL PUBLIC UTILITY DIST
- FORESTVILLE WATER DISTRICT
- FORT BRAGG, CITY OF
- FORT HUNTER LIGGETT
- FORT JONES, TOWN OF
- FORTUNA, CITY OF
- FRAZIER PARK PUD
- FULLER ACRES MUTUAL WATER COMPANY
- FULTON WATER COMPANY
- GABILAN WC
- GALT, CITY OF
- GARBERVILLE SANITARY DISTRICT
- GARDEN ACRES MUTUAL WATER CO
- GASQUET C.S.D.
- GATEWAY
- GEORGETOWN DIVIDE PUD
- GERBER LAS FLORES CSD
- GLEN EDEN SUN CLUB
- GLEN HELEN WATER SYSTEM
- GLENDALE-CITY, WATER DEPT.
- GLENDORA-CITY, WATER DEPT.
- GOLDEN HILLS CSD
- GOLDEN STATE WATER CO - APPLE VLY NORTH
- GOLDEN STATE WATER CO - APPLE VLY SOUTH
- GOLDEN STATE WATER CO - ARDEN WATER SERV
- GOLDEN STATE WATER CO - BARSTOW
- GOLDEN STATE WATER CO - LUCERNE
- GOLDEN STATE WATER CO - MORONGO DEL SUR
- GOLDEN STATE WATER CO - WRIGHTWOOD
- GOLDEN STATE WATER CO. - CORDOVA
- GOLDEN STATE WATER CO.-CLEARLAKE SYSTEM
- GOLDEN STATE WATER COMPANY - BAY POINT
- GOLDEN STATE WATER COMPANY - EDNA
- GOLDEN STATE WATER COMPANY - LAKE MARIE
- GOLDEN STATE WATER COMPANY - LOS OSOS
- GOLDEN STATE WATER COMPANY - NIPOMO
- GOLDEN STATE WATER COMPANY - ORCUTT
- GOLDEN STATE WATER COMPANY - SIMI VALLEY
- GOLDEN STATE WATER COMPANY - TANGLEWOOD
- GOLDEN STATE WATER COMPANY-CYPRESS RIDGE
- GOLDEN STATE WC - COWAN HEIGHTS
- GOLDEN STATE WC - PLACENTIA/YORBA LINDA
- GOLDEN STATE WC - WEST ORANGE COUNTY
- GOLETA WATER DISTRICT
- GONZALES, CITY OF
- GRAEAGLE WATER COMPANY
- GREAT OAKS WC INC
- GREEN VALLEY CWD
- GREEN VALLEY MWC
- GREENFIELD COUNTY WD
- GREENFIELD, CITY OF
- GRIZZLY FLATS COMMUNITY SERVIC
- GRIZZLY LAKE CSD-DELLEKER
- GROVELAND COMMUNITY SERV DIST
- GSWC - ARTESIA
- GSWC - BELL, BELL GARDENS
- GSWC - CALIPATRIA
- GSWC - CLAREMONT
- GSWC - CULVER CITY
- GSWC - FLORENCE/GRAHAM
- GSWC - HOLLYDALE
- GSWC - NORWALK
- GSWC - SOUTHWEST
- GSWC - WILLOWBROOK
- GSWC-SAN DIMAS
- GSWC-SOUTH ARCADIA
- GSWC-SOUTH SAN GABRIEL
- GUADALUPE VALLEY MID
- GUADALUPE WATER DEPARTMENT
- HAMILTON BRANCH CSD
- HANFORD, CITY OF
- HAPPY CAMP C.S.D.
- HARBOR VIEW MUTUAL WATER COMPANY
- HAWTHORNE-CITY WATER DEPT.
- HEALDSBURG, CITY OF
- HEBER PUBLIC UTILITY DISTRICT
- HELENDALE COMMUNITY SERVICE DISTRICT
- HELIX WATER DISTRICT
- HEMET, CITY OF
- HEMLOCK MUTUAL WATER CO.
- HERITAGE RANCH CSD
- HERLONG PUBLIC UTILITY DISTRICT
- HESPERIA WD
- HI DESERT WD
- HIDDEN VALLEY LAKE CSD
- HIGH DESERT DETENTION CENTER
- HIGH VALLEYS WATER DISTRICT
- HIGHLAND MOBILE HOME PARK
- HIGHLANDS MUTUAL WATER COMPANY
- HILLSVIEW HOMES
- HILMAR COUNTY WATER DISTRICT
- HOLLISTER, CITY OF
- HOLTVILLE, CITY OF
- HOME GARDEN CSD
- HOME GARDENS COUNTY WD
- Hoopa Valley-Wide System
- HOPLAND PUBLIC UTILITY DISTRICT
- HOWELL MOUNTAIN MUTUAL WATER COMPANY
- HUGHSON, CITY OF
- HUMBOLDT BAY MWD
- HUMBOLDT C.S.D.
- HUME LAKE CHRISTIAN CAMPS, INC
- HUNTINGTON PARK-CITY, WATER DEPT.
- HURON, CITY OF
- HYDESVILLE CO. W.D.
- IDYLLWILD WATER DISTRICT
- IMPERIAL, CITY OF
- INDIAN CREEK CSD
- INDIAN WELLS VALLEY W.D.
- INDIO WATER AUTHORITY
- INGLEWOOD- CITY, WATER DEPT.
- INVERNESS PUBLIC UTILITY DIST
- INYO COUNTY PWD - INDEPENDENCE
- INYO COUNTY PWD - LONE PINE
- INYOKERN CSD
- IRVINE RANCH WATER DISTRICT
- IVANHOE PUBLIC UTILITY DIST
- IVCSD-GREENVILLE
- JACKSON VALLEY IRRIGATION DISTRICT
- JACOBY CREEK CWD
- JACUMBA COMMUNITY SD
- JOHN LATORACCA CORRECTIONAL FACILITY
- JOSHUA BASIN WATER DISTRICT
- JUBILEE MWC
- JULIAN COMMUNITY SERVICES DISTRICT
- JUNIPER RIVIERA CWD
- JURUPA COMMUNITY SD
- JUVENILE JUSTICE CAMPUS
- KELSEYVILLE CO WATERWORKS DISTRICT 3
- KENWOOD VILLAGE WATER COMPANY (PUC)
- KERMAN, CITY OF
- KERN VALLEY STATE PRISON
- KETTLEMAN CITY CSD
- KEYES COMMUNITY SERVICES DIST.
- KINGSBURG, CITY OF
- KINNELOA IRRIGATION DIST.
- KIRKWOOD MEADOWS PUBLIC UTILITY DISTRICT
- KNIGHTS LANDING SVC. DIST.
- KONOCTI COUNTY WATER DISTRICT
- KRISTA MUTUAL WATER COMPANY
- LA CANADA IRRIGATION DIST.
- LA CUMBRE MUTUAL WATER CO
- LA HABRA HEIGHTS CWD
- La Jolla Eastern
- LA PUENTE VALLEY CWD
- LA VERNE, CITY WD
- LACSD - RIMFOREST
- LAGUNA BEACH COUNTY WD
- LAKE ALPINE WATER COMPANY
- LAKE ARROWHEAD CSD
- LAKE COUNTY CSA 2 - SPRING VALLEY
- LAKE COUNTY CSA 20 - SODA BAY
- LAKE COUNTY CSA 21 - NORTH LAKEPORT
- LAKE DON PEDRO CSD
- LAKE ELIZABETH MUTUAL WATER CO.
- LAKE FOREST MUTUAL W.C.
- LAKE HEMET MWD
- LAKE HEMET-GARNER VALLEY
- LAKE MORENA'S OAK SHORES MWC
- LAKE OF THE WOODS MWC
- LAKE SHASTINA C.S.D
- LAKEPORT, CITY OF
- LAKESIDE PARK ASSOCIATION
- LAKESIDE WD
- LAKEWOOD - CITY, WATER DEPT.
- LAMONT PUBLIC UTILITY DIST
- LANARE COMMUNITY SERVICES DIST
- LAND PROJECTS MUTUAL WATER CO.
- LAS FLORES WATER CO.
- LAS VIRGENES MWD
- LATON COMMUNITY SERVICES DISTRICT
- LAWSON S LANDING
- LAYTONVILLE COUNTY WATER DISTRICT
- LE GRAND COMM SERVICES DIST
- LEAVITT LAKE CSD
- LEBEC COUNTY WATER DISTRICT
- LEMOORE NAVAL AIR STATION
- LEMOORE, CITY OF
- LERDO SHERIFF S FACILITY
- LEWISTON COMMUNITY SERVICES DISTRICT
- LIBERTY -YERMO
- LIBERTY UTILITIES (AV RANCHOS) CORP.
- LIBERTY UTILITIES - BELLFLOWER-NORWALK
- LIBERTY UTILITIES - COMPTON
- LIBERTY UTILITIES - LYNWOOD
- LIBERTY UTILITIES - MESA CREST
- LILY OF THE VALLEY MOBILE VILLAGE
- LIMONEIRA RANCH #1
- LINCOLN AVENUE WATER CO.
- LINDA COUNTY WATER DISTRICT
- LINDEN COUNTY WATER DISTRICT
- LINDSAY, CITY OF
- LINNELL FARM LABOR CENTER
- LITTLE BEAR WATER COMPANY
- LITTLE POTATO SLOUGH MUTUAL
- LITTLEROCK CREEK IRRIGATION DIST.
- LLANO DEL RIO WATER COMPANY
- LOCH LOMOND MUTUAL WATER CO
- LOCKEFORD COMMUNITY SERV. DIST.
- LODI, CITY OF
- LOLETA C.S.D.
- LOMA LINDA, CITY OF
- LOMITA-CITY, WATER DEPT.
- LOMPOC-CITY WATER UTILITY DIV
- LONDON COMMUNITY SERV DIST
- Lone Pine
- LONG BEACH UTILITIES DEPARTMENT
- LOS ALAMOS COMMUNITY SERVICES DISTRICT
- LOS ANGELES CWWD 21-KAGEL CANYON
- LOS ANGELES CWWD 29 & 80-MALIBU
- LOS ANGELES CWWD 36-VAL VERDE
- LOS ANGELES CWWD 37-ACTON
- LOS ANGELES CWWD 40 REG 4 & 34 LANCASTER
- LOS ANGELES CWWD 40, R 24,27,33-PEARBLSM
- LOS ANGELES CWWD 40, REG. 35-N.E. L.A.
- LOS ANGELES CWWD 40, REG. 38-LAKE LA
- LOS ANGELES CWWD 40, REG. 39-ROCK CREEK
- LOS ANGELES-CITY, DEPT. OF WATER & POWER
- LOS MOLINOS COMM. SERVICES DIST.
- LOS OSOS COMMUNITY SERVICES DISTRICT
- LOS PRIETOS COMPLEX
- LOST HILLS UTILITY DISTRICT
- LOWER LAKE COUNTY WATER DISTRICT
- LUCERNE WATER CO. - CAL WATER SERVICE
- LUKINS BROTHERS WATER COMPANY
- LYNWOOD PARK MUTUAL WATER CO.
- LYNWOOD-CITY, WATER DEPT.
- Lytton Rancheria Water System
- MADERA CO CMD19-PARKWOOD
- MADERA CO CSA 22C GUNNER RANCH
- MADERA CO MD10A-MADERA RANCHOS
- MADERA CO SA1-INDIAN LAKES
- MADERA CO SA3-PARKSDALE
- MADERA VALLEY WATER COMPANY
- MADISON SERVICE DIST
- MAJESTIC PINES COMMUNITY SD
- MALAGA COUNTY WATER DISTRICT
- MAMMOTH CWD
- MANHATTAN BEACH-CITY, WATER DEPT.
- MANILA COMMUNITY SERVICES DIST.
- MANTECA, CITY OF
- MARIANA RANCHOS CWD
- MARIN MUNICIPAL WATER DISTRICT
- MARINA COAST WATER DISTRICT
- MARIPOSA PUBLIC UTILITY DIST
- MARYGOLD MWC
- MAXWELL PUBLIC UTILITY DISTRICT
- MAYWOOD MUTUAL WATER CO. #1
- MAYWOOD MUTUAL WATER CO. #2
- MAYWOOD MUTUAL WATER CO. #3
- MC CLELLAN MHP
- MCCLOUD C.S.D.
- MCFARLAND, CITY OF
- MCKINLEYVILLE C.S.D.
- MCKINNEY WATER DISTRICT
- MD 33 FAIRMEAD
- MEADOW VISTA CWD
- MEADOWCREEK MUTUAL WATER COMPANY
- MEINERS OAKS CWD
- MENDOTA, CITY OF
- MENLO PARK MUNICIPAL WATER
- MESA DUNES MOBILE HOME ESTATES
- MESA WATER DISTRICT
- Mesquite Creek
- MI WUK VILLAGE MUT WTR CO
- MID-PENINSULA WATER DISTRICT
- MIDWAY CITY MUTUAL WC
- MIDWAY HEIGHTS C. W. D.
- MIL POTRERO MWC
- MILLVIEW COUNTY WATER DISTRICT
- MINERAL COUNTY WATER DISTRICT
- MISSION HILLS CSD
- MISSION OAKS MOBILE HOME PARK
- MISSION SPRINGS CONFERENCE CENTER
- MISSION SPRINGS WD
- MODESTO, CITY OF
- MOJAVE PUD
- MONROVIA-CITY, WATER DEPT.
- MONTAGUE, CITY OF
- MONTARA WATER AND SANITARY DISTRICT
- MONTE VISTA WD
- MONTEBELLO LAND & WATER CO.
- MONTECITO WATER DIST
- MONTEREY PARK-CITY, WATER DEPT.
- MOON VALLEY WATER SYSTEM
- Morongo
- MORRO BAY PW DEPT - WATER DIVISION
- MORRO ROCK MUTUAL WATER CO
- MOULTON NIGUEL WATER DISTRICT
- MOUNTAIN GATE C.S.D.
- MOUNTAIN MEADOWS MWC
- MOUNTAIN MESA WC
- MP MINE OPERATIONS LLC
- MT. HERMON ASSOCIATION, INC.
- MT. KONOCTI MUTUAL WATER COMPANY
- MT. SHASTA, CITY OF
- MUSCOY MWC NO. 1
- MYOMA DUNES MUTUAL WATER COMPANY
- NACIMIENTO WATER COMPANY
- NAPA, CITY OF
- NASA AMES RESEARCH CENTER
- NAVAL BASE VENTURA COUNTY, POINT MUGU
- NAVAL BASE VENTURA COUNTY, PORT HUENEME
- NAVAL MEDICAL CENTER SAN DIEGO
- NEEDLES, CITY OF
- NEPENTHE WS
- NEVADA ID - E. GEORGE, BANNER MOUNTAIN
- NEVADA ID - LAKE OF PINES
- NEVADA ID - LAKE WILDWOOD
- NEVADA ID - LOMA RICA
- NEVADA ID - NORTH AUBURN
- NEWELL COUNTY WATER DISTRICT
- NICE MUTUAL WATER COMPANY
- NIPOMO COMM SERVICES DIST
- Nixon
- NORCO, CITY OF
- NORTH COAST COUNTY WATER DIST
- NORTH EDWARDS WD
- NORTH GUALALA WATER COMPANY
- NORTH KAWEAH MUTUAL WATER COMPANY
- NORTH MARIN WATER DISTRICT
- NORTH MARIN WD - PT. REYES
- NORTH TAHOE PUD - CARNELIAN WOODS
- NORTH TAHOE PUD - DOLLAR COVE
- NORTH TAHOE PUD - MAIN
- NORTH YUBA WATER DISTRICT
- NORTHSTAR C.S.D.
- NORTHSTAR CSD - MARTIS VALLEY
- NORWALK - CITY, WATER DEPT.
- NPS-ASH MOUNTAIN
- NPS-GRANT GROVE
- NUEVO WATER COMPANY
- NYELAND ACRES MUTUAL WATER CO
- O'CONNOR TRACT CO-OPERATIVE WATER CO.
- OAKDALE, CITY OF
- OAKWOOD LAKE WATER DISTRICT-SUBDIVISION
- Oasis Mobile Home Park
- OCEANO COMM SERVICES DIST.
- OCEANSIDE, CITY OF
- ODD FELLOWS RECREATION CLUB
- OID-OAKDALE RURAL WATER SYSTEM #1
- OILDALE MWC
- OJAI WATER SYSTEM
- OLIVEHURST PUBLIC UTILITY DISTRICT
- OLIVENHAIN MWD
- OLYMPIC VALLEY PSD
- ONTARIO MUNICIPAL UTILITIES COMPANY
- ORANGE VALE WATER COMPANY
- ORCHARD DALE WATER DISTRICT
- ORLEANS C.S.D.
- OROSI PUBLIC UTILITY DISTRICT
- OTAY WATER DISTRICT
- OUTDOOR RESORTS RANCHO CA
- OXNARD WATER DEPT
- PACIFIC UNION COLLEGE
- PADRE DAM MWD
- Pala North
- PALM RANCH IRRIGATION DIST.
- PALMDALE WATER DIST.
- PALMS RIVER RESORT
- PALO ALTO PARK MUTUAL WATER COMPANY
- PARADISE IRRIGATION DISTRICT
- PARAMOUNT - CITY, WATER DEPT.
- PASADENA WATER AND POWER
- PATTERSON TRACT CSD
- PATTERSON, CITY OF
- Pauma
- PCWA - WEIMAR
- Pechanga
- PENNGROVE WATER COMPANY (PUC)
- PETALUMA, CITY OF
- PETER PITCHESS HONOR RANCHO DETN. CTR
- PHELAN PINON HILLS CSD
- PHOENIX LAKE ESTATES CC MWC
- PICO RIVERA - CITY, WATER DEPT.
- PICO WD
- PINE COVE WATER DISTRICT
- PINE VALLEY MUTUAL WC
- PINEDALE COUNTY WATER DISTRICT
- PINON PINES MWC
- PISMO BEACH WATER DEPARTMENT
- PIXLEY PUBLIC UTIL DIST
- PLACER CSA - SHERIDAN
- PLACER CWA - ALTA
- PLACER CWA - AUBURN/BOWMAN
- PLACER CWA - COLFAX
- PLACER CWA - FOOTHILL
- PLACERVILLE, CITY OF - MAIN
- PLAINVIEW MUTUAL WATER COMPANY
- PLANADA CSD
- PLANTATION ON THE LAKE PARK
- PLEASANT VALLEY MUTUAL WATER CO
- PLEASANTIMES MUTUAL WATER CO
- PLUMAS LAKE
- PLYMOUTH, CITY OF
- Point Arena Rancheria
- POMONA - CITY, WATER DEPT.
- PONDEROSA BASIN MUTUAL WTR CO
- POPLAR COMM SERVICE DIST
- PORT HUENEME CITY WATER DEPT
- PORTERVILLE, CITY OF
- POWAY, CITY OF
- PRESIDIO OF SAN FRANCISCO
- PSMCSD - MOSS LANDING HARBOR WS
- PSMCSD - NORMCO
- PSMCSD - PAJARO
- PSMCSD - SUNNY MESA
- PURISSIMA HILLS WATER DISTRICT
- QUARTZ HILL WATER DIST.
- RAINBOW MUNICIPAL WD
- RAMONA MUNICIPAL WD
- RANCHO CALIFORNIA WATER DISTRICT
- RANCHO MURIETA COMMUNITY SERVI
- RANCHO PAUMA MUTUAL WC
- RANCHO SESPE WORKERS IMP ASSOC
- Red Hawk Casino - Shingle Springs
- Redding Rancheria
- REDLANDS CITY MUD-WATER DIV
- REDWAY C.S.D.
- REDWOOD VALLEY COUNTY WATER DISTRICT
- REEDLEY, CITY OF
- RESORT IMPROVEMENT DISTRICT #1
- RIALTO, CITY OF
- RICHGROVE COMMUNITY SERVICES DISTRICT
- RINCON DEL DIABLO MWD (ID-1)
- RINCON DEL DIABLO MWD (ID-A)
- Rincon Northern
- RIO ALTO WATER DISTRICT
- RIO COSUMNES CORRECTIONAL CENTER [SWS]
- RIO DELL, CITY OF
- RIO LINDA/ELVERTA COMMUNITY WATER DIST
- RIO MANOR MUTUAL WATER CO
- RIO VISTA MOBILE HOME PARK
- RIPON, CITY OF
- RIVER PINES PUD
- RIVERBANK, CITY OF
- RIVERDALE PARK TRACT CSD
- RIVERDALE PUBLIC UTILITY DISTRICT
- RIVERDALE VILLAGE
- RIVERSIDE CSA #122-MESA VERDE
- RIVERSIDE HIGHLAND WATER COMPANY
- RIVERSIDE, CITY OF
- RIVERSTONE/ROOTCREEK WATER DISTRICT
- RIVERVIEW MOBILE HOME ESTATES
- ROGINA WATER COMPANY INC.
- ROHNERT PARK, CITY OF
- ROLLING GREEN UTILITIES, INC.
- ROSAMOND CSD
- ROWLAND WATER DISTRICT
- RUBIDOUX COMMUNITY SD
- RUBIO CANON LAND & WATER ASSOCIATION
- RUNNING SPRINGS WATER DISTRICT
- RURAL NORTH VACAVILLE WATER DISTRICT
- RUSSIAN RIVER COUNTY WATER DISTRICT
- S & T MUTUAL WATER COMPANY
- SACRAMENTO SUBURBAN WATER DISTRICT
- SALINAS VALLEY STATE PRISON
- SAN ANTONIO WATER COMPANY
- SAN ARDO WD
- SAN BERNARDINO CITY
- SAN BERNARDINO VALLEY WD
- SAN DIEGO, CITY OF
- SAN DIEGUITO WD
- SAN FERNANDO-CITY, WATER DEPT.
- SAN FRANCISCO REGIONAL WATER SYSTEM
- SAN GABRIEL COUNTY WD
- SAN GABRIEL VALLEY WATER CO-MONTEBELLO 1
- SAN GABRIEL VALLEY WATER CO-MONTEBELLO 2
- SAN GABRIEL VALLEY WATER CO.-EL MONTE
- SAN GABRIEL VALLEY WC - FONTANA
- SAN JACINTO, CITY OF
- SAN JOAQUIN COUNTY - COLONIAL HEIGHTS
- SAN JOAQUIN COUNTY - LINCOLN VILLAGE
- SAN JOAQUIN COUNTY - THORNTON
- SAN JOAQUIN COUNTY - WILKINSON MANOR
- SAN JOAQUIN COUNTY-MOKELUMNE ACRES
- SAN JOAQUIN COUNTY-RAYMUS VILLAGE
- SAN JOAQUIN RIVER CLUB INC
- SAN JOAQUIN, CITY OF
- SAN JOSE WATER
- SAN JUAN BAUTISTA, CITY OF
- SAN JUAN WATER DISTRICT
- SAN LORENZO VALLEY WATER DIST
- SAN LUIS OBISPO WATER DEPARTMENT
- SAN MARTIN COUNTY WATER DISTRICT
- SAN MIGUEL COMMUNITY SERVICES DISTRICT
- SAN MIGUELITO MWC
- San Pasqual District A
- San Pasqual District B
- SANTA ANA RIVER WATER COMPANY
- SANTA CLARITA VALLEY WATER AGENCY
- SANTA CRUZ WATER DEPARTMENT
- SANTA FE I.D.
- SANTA FE SPRINGS - CITY, WATER DEPT.
- SANTA LUCIA PRESERVE WS
- SANTA MARGARITA WATER DISTRICT
- SANTA MARGARITA WATER DISTRICT-ID9
- SANTA MONICA-CITY, WATER DIVISION
- SANTA NELLA COUNTY WATER DISTRICT
- Santa Rosa Rancheria
- SANTA ROSA, CITY OF
- SANTA YNEZ RIVER WATER CONS. DIST. ID#1
- SBDNO COUNTY SERVICE AREA 64
- SBDNO COUNTY SERVICE AREA 70 CEDAR GLEN
- SBDNO COUNTY SERVICE AREA 70J
- SCOTIA CSD
- SCOTTS VALLEY WATER DISTRICT
- SCWA - ARDEN PARK VISTA
- SCWA - LAGUNA/VINEYARD
- SCWA MATHER-SUNRISE
- SEA RANCH WATER COMPANY,THE (PUC)
- SEARLES VALLEY MINERALS OPERATIONS INC
- SEASIDE MUNICIPAL WATER SYSTEM
- SEBASTOPOL, CITY OF
- SEELEY CWD
- SENIOR CANYON MUTUAL WATER CO
- SERRANO WATER DISTRICT
- SEVILLE WATER COMPANY
- SFPUC CITY DISTRIBUTION DIVISION
- SHAFTER, CITY OF
- SHASTA C.S.D.
- SHASTA CSA - JONES VALLEY, #6
- SHASTA FOREST VILLAGE M.W.C.
- SHAVER LAKE HEIGHTS MWC
- SHEEP CREEK WATER COMPANY
- SHERWOOD MOBILE HOME PARK
- SID - GIBSON CANYON
- SIERRA CSA #5, SIERRA BROOKS
- SIERRA HIGHLAND CSD
- SIERRA MADRE-CITY, WATER DEPT.
- SIGNAL HILL - CITY, WATER DEPT.
- SLO CSA NO. 16 - SHANDON
- SLO CWWD NO. 23 - SANTA MARGARITA
- SLOCSA #10A - CAYUCOS
- SLVWD - FELTON WATER SYSTEM
- SMITH RIVER C.S.D.
- SNOWSHOE SPRINGS ASSN.
- SO. CAL. EDISON CO.-SANTA CATALINA
- Soboba
- SOLEDAD, CITY OF
- SOLVANG WATER DIVISION
- SONOMA COUNTY CSA 41-FITCH MOUNTAIN
- SONOMA STATE UNIVERSITY
- SONOMA, CITY OF
- SONORA MEADOWS MUTUAL WTR CO
- SONORA WATER RESOURCES, INC
- SOQUEL CREEK WATER DISTRICT
- SOUTH COAST WATER DISTRICT
- SOUTH FEATHER W&P - MINERS RANCH
- SOUTH GATE-CITY, WATER DEPT.
- SOUTH MESA WC
- SOUTH MIDWAY CITY MUTUAL WATER CO.
- SOUTH MONTEBELLO IRRIGATION DIST.
- SOUTH TAHOE PUD - MAIN
- SPRINGVILLE PUD
- SSWD - DEL PASO MANOR SERVICE AREA
- ST. HELENA, CITY OF
- STALLION SPRINGS CSD
- STANFORD UNIVERSITY
- STINSON BEACH COUNTY WTR DIST
- STOCKTON VERDE MOBILE HOME PARK
- STRATFORD PUD
- STRATHMORE PUBLIC UTIL DIST
- SUBURBAN WATER SYSTEMS - SATIVA
- SUBURBAN WATER SYSTEMS-COVINA KNOLLS
- SUBURBAN WATER SYSTEMS-GLENDORA
- SUBURBAN WATER SYSTEMS-LA MIRADA
- SUBURBAN WATER SYSTEMS-SAN JOSE
- SUBURBAN WATER SYSTEMS-WHITTIER
- SUISUN-SOLANO WATER AUTHORITY
- SULTANA COMMUNITY SERVICES DISTRICT
- SUNBEAM LAKE RV RESORT
- SUNDALE MUTUAL WATER COMPANY A, B
- SUNNY SLOPE WATER CO.
- SUNNYSLOPE COUNTY WATER DIST
- SUTTER COMMUNITY S.D.
- SWEETWATER AUTHORITY
- SWEETWATER SPRINGS CWD - GUERNEVILLE
- SWEETWATER SPRINGS CWD - MONTE RIO
- Sycuan
- Table Mountain Rancheria
- TAHOE CITY PUD - MAIN
- TAHOE CITY PUD - MCKINNEY/QUAIL
- TAHOE CITY PUD - RUBICON
- TAHOE CITY PUD - TAHOE CEDARS
- TAHOE CITY PUD - TAHOE SWISS VILLAGE
- TAHOE KEYS WATER COMPANY
- TAHOE PARK WATER COMPANY
- TASCO SPRECKELS WATER COMPANY
- TEHACHAPI, CITY OF
- TEJON CASTAC WD - I5 & LAVAL RD
- TEMESCAL VALLEY WATER DISTRICT
- TEMPLETON CSD
- TERRA BELLA IRRIGATION DISTRICT - TBT
- TERRACE WATER COMPANY
- TESORO VIEJO MASTER MWC, INC.
- THERMALITO WATER & SEWER DIST
- THUNDERBIRD CWD
- TIPTON COMMUNITY SERVICES DIST
- TOKAY PARK WATER CO
- TORRANCE-CITY, WATER DEPT.
- TOWN OF DISCOVERY BAY
- TOWN OF HILLSBOROUGH
- TOWN OF YOUNTVILLE
- TRABUCO CANYON WATER DISTRICT
- TRACT 180 MUTUAL WATER CO.
- TRACT 349 MUTUAL WATER CO.
- TRACY, CITY OF
- TRADEWIND WATER ASSOC.
- TRANQUILLITY IRRIGATION DISTRICT
- TREASURE ISLAND
- TRINIDAD, CITY OF
- TRINITY CENTER M.W.C.
- TRINITY CO. W.W. DIST #1
- TRIUNFO WATER & SANITATION DISTRICT
- TROUT GULCH MUTUAL WATER COMPANY
- TRUCKEE-DONNER PUD, MAIN
- TUD - COLUMBIA WATER SYSTEM
- TUD - PONDEROSA
- TUD - SONORA/JAMESTOWN WATER SYSTEM
- TUD - TUOLUMNE WATER SYSTEM
- TUD - UPPER BASIN WATER SYSTEM
- TUD-APPLE VALLEY ESTATES
- TULARE, CITY OF
- Tule River Reservation Main
- TULELAKE, CITY OF
- TURLOCK, CITY OF
- TWAIN HARTE COMMUNITY SERVICES DISTRICT
- TWENTYNINE PALMS WATER DISTRICT
- UC - DAVIS
- UKIAH, CITY OF
- UNION PUBLIC UTILITY DISTRICT
- UPLAND, CITY OF
- UPPER LAKE COUNTY WATER DISTRICT
- US ARMY FORT IRWIN
- USMC - 29 PALMS
- VALENCIA HEIGHTS WATER CO.
- VALLECITOS WD
- VALLEY CENTER MWD
- VALLEY COUNTY WATER DIST.
- VALLEY OF ENCHANTMENT MWC
- VALLEY OF THE MOON WATER DISTRICT
- VALLEY SPRINGS PUD
- VALLEY STATE PRISON
- VALLEY VIEW MUTUAL WATER CO.
- VALLEY WATER CO.
- VANDENBERG VILLAGE COMM. SERV. DIST.
- VAUGHN WC INC
- VENTURA CWWD NO. 1 - MOORPARK
- VENTURA CWWD NO. 17 - BELL CANYON
- VENTURA CWWD NO. 19 - SOMIS
- VENTURA CWWD NO. 38 - LAKE SHERWOOD
- VENTURA RIVER WATER DISTRICT
- VENTURA WATER DEPARTMENT
- VENTURA WWD NO. 8 - SIMI VALLEY
- VERNON-CITY, WATER DEPT.
- VETERANS HOME OF CALIFORNIA
- VICTORVILLE WATER DISTRICT
- VICTORY MUTUAL WATER COMPANY
- Viejas Community System
- VINEYARD AVE ESTATES MWC
- VINEYARD AVENUE ACRES MWC
- VINEYARD RV PARK
- VISTA IRRIGATION DISTRICT
- Wadsworth
- WALNUT PARK MUTUAL WATER CO.
- WALNUT VALLEY WATER DISTRICT
- WASCO ST. PRISON RECEPTION CTR
- WASCO, CITY OF
- WATERFORD - HICKMAN
- WATERFORD-RIVER POINTE
- WATSONVILLE, CITY OF
- WEAVERVILLE C.S.D.
- WEED, CITY OF
- WEST ALMANOR M.W.C.
- WEST KERN WATER DISTRICT
- WEST PALM SPRINGS VILLAGE
- WEST VALLEY COUNTY WATER DISTRICT
- WEST VALLEY WATER DISTRICT
- WESTBOROUGH WATER DISTRICT
- WESTERN HEIGHTS WATER COMPANY
- WESTERN HILLS WATER DISTRICT/DIABLO GRAN
- WESTERN MWD
- WESTERN MWD - MURRIETA DIVISION
- WESTMORLAND, CITY OF
- WESTWOOD C.S.D.
- WHITE FENCE FARMS MWC NO. 1
- WHITE FENCE FARMS MWC NO.3
- WHITEHAWK RANCH MWC
- WHITTIER-CITY, WATER DEPT.
- WILD WINGS GOLF COMMUNITY
- WILLITS, CITY OF
- WILLOW COUNTY WATER DISTRICT
- WILLOW CREEK C.S.D.
- WILLOWSIDE MUTUAL WATER COMPANY
- WINDSOR, TOWN OF
- WINTON WATER & SANITARY DIST
- WOODLAKE, CITY OF
- WOODLAND PARK MUTUAL WATER CO
- WOODLANDS DEVELOPMENT
- WOODVILLE FARM LABOR CENTER
- WOODVILLE PUBLIC UTILITY DIST
- Yocha Dehe Potable Water System
- YORBA LINDA WATER DISTRICT
- YOSEMITE NPS-EL PORTAL
- YOSEMITE NPS-YOSEMITE VALLEY
- YOSEMITE SPRING PARK UTIL CO
- YREKA, CITY OF
- YUCAIPA VALLEY WATER DISTRICT
- YUIMA MUNICIPAL WATER DISTRICT IDA
From EPA's Safe Drinking Water Information System (SDWIS), through EPA ECHO's drinking water system download. Health-based violations from EPA Envirofacts, downloaded Nov. 2, 2026. EPA's file dated Oct. 23, 2026. EPA: “All compliance and enforcement data displayed on ECHO are current as of the last official quarterly refresh of the source data system, SDWIS, which may lag by three to six months.” These are records of violations, not a test of your tap water today: your water system's annual Consumer Confidence Report has its test results. Names and values are shown as EPA writes them. EPA ECHO drinking water search.