Calidad del agua potable en California
Esta página resume los registros del EPA sobre los sistemas públicos de agua potable activos en California. Los sistemas listados corresponden a la categoría comunitaria del SDWIS (CWS) — sistemas que sirven a una población residente estable durante todo el año. Las violaciones reportadas siguen la clasificación regulatoria del EPA: basada en salud, monitoreo o reporte.
El conteo de violaciones cubre los últimos 5 años a partir de la fecha del volcado de SDWIS. Las cifras se actualizan cada trimestre cuando el EPA publica un nuevo volcado. Las detecciones de PFAS provienen de la Unregulated Contaminant Monitoring Rule y solo cubren los sistemas que participaron en la ronda correspondiente.
Resumen
Sistemas públicos
455
Población servida
41,869,459
total agregado
Violaciones
800
últimos 5 años
Detecciones PFAS
2,592
UCMR
Ciudades principales
| Ciudad | Población total servida | Sistemas | Violaciones |
|---|---|---|---|
| Los Angeles | 7,751,132 | 1 | 20 |
| San Jose | 3,123,915 | 27 | 31 |
| Oakland | 1,442,800 | 1 | 0 |
| San Diego | 1,422,369 | 2 | 24 |
| Sacramento | 1,152,891 | 10 | 4 |
| Burlingame | 879,470 | 2 | 0 |
| Anaheim | 736,028 | 8 | 11 |
| Perris | 666,581 | 1 | 0 |
| Fresno | 604,109 | 3 | 8 |
| Long Beach | 466,772 | 1 | 3 |
| Irvine | 444,800 | 1 | 4 |
| Riverside | 401,913 | 3 | 0 |
| Hawthorne | 356,560 | 3 | 7 |
| Alhambra | 344,330 | 5 | 0 |
| Fremont | 344,000 | 1 | 0 |
| Covina | 324,981 | 4 | 2 |
| Santa Ana | 310,539 | 1 | 7 |
| Downey | 298,721 | 5 | 16 |
| Newhall | 294,090 | 1 | 0 |
| Bakersfield | 286,339 | 5 | 70 |
- Los Angeles — Los Angeles-City, Dept. of Water & Power
- San Jose (27 sistemas)
- Oakland — East Bay Mud
- San Diego (2 sistemas)
- Sacramento (10 sistemas)
- Burlingame (2 sistemas)
- Anaheim (8 sistemas)
- Perris — Eastern Municipal WD
- Fresno (3 sistemas)
- Long Beach — Long Beach Utilities Department
- Irvine — Irvine Ranch Water District
- Riverside (3 sistemas)
- Hawthorne (3 sistemas)
- Alhambra (5 sistemas)
- Fremont — Alameda County Water District
- Covina (4 sistemas)
- Santa Ana — City of Santa Ana
- Downey (5 sistemas)
- Newhall — Santa Clarita Valley Water Agency
- Bakersfield (5 sistemas)
Contaminantes más detectados
| Contaminante | Código EPA | MCL | Violaciones |
|---|---|---|---|
| Bromoformo · Bromoform | 2950 | — | 470 |
| Bromodiclorometano · Bromodichloromethane | 2456 | — | 186 |
| Fluoruro · Fluoride | 1040 | 4 mg/L | 122 |
| Coliformes totales · Total Coliform | 5000 | — | 98 |
| Arsénico · Arsenic | 1005 | 0.01 mg/L | 98 |
| Cloruro de vinilo · Vinyl Chloride | 2987 | 0.002 mg/L | 50 |
| Benceno · Benzene | 2964 | 0.005 mg/L | 46 |
| Tetracloroetileno · Tetrachloroethylene | 2980 | 0.005 mg/L | 46 |
| Tricloroetileno · Trichloroethylene | 2985 | 0.005 mg/L | 46 |
| Trihalometanos totales (TTHM) · Total Trihalomethanes (TTHM) | 3014 | 0.08 mg/L | 31 |
- BromoformoCódigo EPA 2950470Violaciones
- BromodiclorometanoCódigo EPA 2456186Violaciones
- FluoruroCódigo EPA 1040 · MCL 4 mg/L122Violaciones
- Coliformes totalesCódigo EPA 500098Violaciones
- ArsénicoCódigo EPA 1005 · MCL 0.01 mg/L98Violaciones
- Cloruro de viniloCódigo EPA 2987 · MCL 0.002 mg/L50Violaciones
- BencenoCódigo EPA 2964 · MCL 0.005 mg/L46Violaciones
- TetracloroetilenoCódigo EPA 2980 · MCL 0.005 mg/L46Violaciones
- TricloroetilenoCódigo EPA 2985 · MCL 0.005 mg/L46Violaciones
- Trihalometanos totales (TTHM)Código EPA 3014 · MCL 0.08 mg/L31Violaciones
Para ver los registros de un contaminante específico en California:
- Bromoformo en California
- Bromodiclorometano en California
- Fluoruro en California
- Coliformes totales en California
- Arsénico en California
- Cloruro de vinilo en California
- Benceno en California
- Tetracloroetileno en California
- Tricloroetileno en California
- Trihalometanos totales (TTHM) en California
Violaciones recientes
| Inicio | Tipo | PWSID |
|---|---|---|
| 2025-12-17 | reporte | CA1910019 |
| 2025-10-01 | basada en salud | CA1510013 |
| 2025-10-01 | reporte | CA1910019 |
| 2025-10-01 | basada en salud | CA3701476 |
| 2025-10-01 | basada en salud | CA3701476 |
| 2025-10-01 | basada en salud | CA5410006 |
| 2025-10-01 | basada en salud | CA5410006 |
| 2025-09-01 | reporte | 090605153 |
| 2025-09-01 | reporte | 090605153 |
| 2025-07-02 | reporte | CA1610005 |
| 2025-07-02 | reporte | CA2710008 |
| 2025-07-02 | reporte | CA3610073 |
| 2025-07-02 | reporte | CA3710002 |
| 2025-07-02 | reporte | CA4910002 |
| 2025-07-02 | reporte | CA4910012 |
| 2025-07-01 | basada en salud | 090605153 |
| 2025-07-01 | reporte | CA3010001 |
| 2025-07-01 | basada en salud | CA3310025 |
| 2025-07-01 | reporte | CA3410004 |
| 2025-07-01 | basada en salud | CA3701476 |
Ciudades con múltiples sistemas
Ciudades de California servidas por dos o más sistemas públicos de agua. Cada página de ciudad agrega los registros de todos los sistemas que la sirven.
- San Jose · 27 sistemas · 3,123,915 personas
- San Diego · 2 sistemas · 1,422,369 personas
- Sacramento · 10 sistemas · 1,152,891 personas
- Burlingame · 2 sistemas · 879,470 personas
- Anaheim · 8 sistemas · 736,028 personas
- Fresno · 3 sistemas · 604,109 personas
- Riverside · 3 sistemas · 401,913 personas
- Hawthorne · 3 sistemas · 356,560 personas
- Alhambra · 5 sistemas · 344,330 personas
- Covina · 4 sistemas · 324,981 personas
- Downey · 5 sistemas · 298,721 personas
- Bakersfield · 5 sistemas · 286,339 personas
- El Monte · 2 sistemas · 270,968 personas
- Modesto · 2 sistemas · 233,308 personas
- Rosemead · 5 sistemas · 199,646 personas
- San Dimas · 6 sistemas · 192,580 personas
- Pasadena · 2 sistemas · 189,596 personas
- Pomona · 2 sistemas · 181,567 personas
- Pleasanton · 2 sistemas · 175,465 personas
- Temecula · 2 sistemas · 175,247 personas
- Jurupa Valley · 2 sistemas · 171,920 personas
- Escondido · 2 sistemas · 167,801 personas
- Rialto · 2 sistemas · 158,951 personas
- San Bernardino · 4 sistemas · 150,362 personas
- Vacaville · 2 sistemas · 128,755 personas
- Encinitas · 2 sistemas · 126,863 personas
- Davis · 2 sistemas · 117,073 personas
- Auburn · 2 sistemas · 116,838 personas
- Rancho Cordova · 3 sistemas · 116,020 personas
- Santa Barbara · 2 sistemas · 111,285 personas
- Redding · 2 sistemas · 108,240 personas
- Chino · 2 sistemas · 97,102 personas
- Hemet · 2 sistemas · 86,741 personas
- Camarillo · 2 sistemas · 79,524 personas
- Whittier · 2 sistemas · 74,954 personas
- San Luis Obispo · 2 sistemas · 62,788 personas
- Pico Rivera · 2 sistemas · 62,651 personas
- Laguna Beach · 2 sistemas · 59,522 personas
- Fallbrook · 2 sistemas · 58,773 personas
- Santa Fe Springs · 2 sistemas · 57,432 personas
- Camp Pendleton · 2 sistemas · 54,870 personas
- Rohnert Park · 2 sistemas · 54,807 personas
- Truckee · 2 sistemas · 52,182 personas
- Hollister · 2 sistemas · 50,971 personas
- Banning · 2 sistemas · 47,680 personas
- Lemoore · 2 sistemas · 42,185 personas
- Montebello · 2 sistemas · 41,575 personas
- Loma Linda · 2 sistemas · 40,497 personas
- Oroville · 2 sistemas · 34,800 personas
- Twentynine Palms · 2 sistemas · 34,043 personas
- Huntington Park · 2 sistemas · 31,617 personas
- Grass Valley · 2 sistemas · 31,226 personas
- Olivehurst · 2 sistemas · 27,059 personas
- Sonora · 2 sistemas · 24,334 personas
Todos los sistemas en California
Lista alfabética de los sistemas públicos comunitarios de agua potable activos en California que aparecen en el volcado actual de SDWIS, filtrados a sistemas con población servida ≥ 50.000.
- Alameda County Water District · Fremont
- Alco Water Service · Salinas
- American Water O&m, Llc - Vsfb · Vandenberg Sfb
- Arvin Community Services Dist · Arvin
- Atascadero Mutual Water CO · Atascadero
- Azusa Light and Water · Azusa
- Bakman Water Company · Fresno
- Beaumont Cherry Valley WD · Beaumont
- Bella Vista Water District · Redding
- Bellflower - Somerset Mwc · Bellflower
- Beverly Hills-City, Water Dept. · Beverly Hills
- Big Bear City Csd · Big Bear City
- Big Bear Lake DWP - Big Bear System · Big Bear Lake
- Brentwood · Brentwood
- Burbank-City, Water Dept. · Burbank
- Cal Am - Antelope · Sacramento
- Cal Am - Fruitridge Vista · Sacramento
- Cal Am - Lincoln Oaks · Sacramento
- Cal Am - Parkway · Sacramento
- Cal Am - Suburban Rosemont · Sacramento
- Cal Am Water Company - Monterey · Pacific Grove
- Cal American Water CO · Rosemead
- Cal-Am Water Company - Duarte · Rosemead
- Cal-Am Water Coronado · Imperial Beach
- Cal-Water Service Co.-Chico · San Jose
- Cal-Water Service Co.-Marysville · San Jose
- Cal-Water Service Co.-Oroville · San Jose
- Cal/Am Water Company - Baldwin Hills · Rosemead
- Cal/Am Water Company - San Marino · Rosemead
- Calif State Polytechnical Univ - Pomona · Pomona
- California Institution for Men · Chino
- California Mens Colony · San Luis Obispo
- California State University Fresno · Fresno
- California Water Service - Bear Gulch · San Jose
- California Water Service - Livermore · San Jose
- California Water Service - San Carlos · San Jose
- California Water Service - San Mateo · San Jose
- California Water Service - Stockton · San Jose
- California Water Service CO - Westlake · San Jose
- California Water Service CO. - Dixon · San Jose
- California Water Service CO. - Dominguez · San Jose
- California Water Service CO. - Ela · San Jose
- California Water Service CO. - Herm/Redo · San Jose
- California Water Service CO. - Palos Ver · San Jose
- California Water Service Co.-Travis Afb · San Jose
- California Water Service-S San Francisco · San Jose
- Camarillo Water Dept · Camarillo
- Camp Pendleton (north) · Camp Pendleton
- Camp Pendleton (south) · Camp Pendleton
- Camrosa Water District · Camarillo
- Carlsbad MWD · Carlsbad
- Carmichael Water District · Carmichael
- Carpinteria Valley Water District · Carpinteria
- Casitas Municipal Water Dist · Oak View
- Ccwd - Ebbetts Pass · San Andreas
- Cerritos - City, Water Dept. · Cerritos
- Chowchilla City Water Dept · Chowchilla
- Citrus Heights Water District · Citrus Heights
- City of Adelanto · Adelanto
- City of Alhambra · Alhambra
- City of American Canyon · American Canyon
- City of Anaheim · Anaheim
- City of Anderson · Anderson
- City of Antioch · Antioch
- City of Arcadia · Arcadia
- City of Arcata · Arcata
- City of Arroyo Grande Utilities Division · Arroyo Grande
- City of Atwater · Atwater
- City of Avenal · Avenal
- City of Bakersfield · Bakersfield
- City of Banning · Banning
- City of Bell Gardens · Bell Gardens
- City of Benicia · Benicia
- City of Brawley · Brawley
- City of Brea · Brea
- City of Buena Park · Buena Park
- City of Burlingame · Burlingame
- City of Calexico · Calexico
- City of California City · California City
- City of Ceres · Ceres
- City of Chino · Chino
- City of Chino Hills · Chino Hills
- City of Cloverdale · Cloverdale
- City of Clovis · Clovis
- City of Colton · Colton
- City of Corcoran · Corcoran
- City of Corona · Corona
- City of Crescent City · Crescent City
- City of Cupertino · Cupertino
- City of Daly City · Daly City
- City of Davis · Davis
- City of Delano · Delano
- City of Dinuba · Dinuba
- City of Dixon · Dixon
- City of East Palo Alto · East Palo Alto
- City of El Centro · El Centro
- City of Escondido · Escondido
- City of Eureka · Eureka
- City of Exeter · Exeter
- City of Fairfield · Fairfield
- City of Farmersville · Farmersville
- City of Fortuna · Fortuna
- City of Fountain Valley · Fountain Valley
- City of Fresno · Fresno
- City of Fullerton · Fullerton
- City of Galt · Galt
- City of Garden Grove · Garden Grove
- City of Gilroy · Gilroy
- City of Greenfield · Greenfield
- City of Grover Beach Public Works Dept · Grover Beach
- City of Hanford · Hanford
- City of Hayward · Hayward
- City of Healdsburg · Healdsburg
- City of Hemet · Hemet
- City of Hollister · Hollister
- City of Huntington Beach · Huntington Beach
- City of Imperial · Imperial
- City of Kerman · Kerman
- City of Kingsburg · Kingsburg
- City of LA Habra · La Habra
- City of LA Palma · La Palma
- City of Lathrop · Lathrop
- City of Lemoore · Lemoore
- City of Lincoln · Lincoln
- City of Lindsay · Lindsay
- City of Livermore · Livermore
- City of Livingston · Livingston
- City of Lodi · Lodi
- City of Loma Linda · Loma Linda
- City of Los Banos · Los Banos
- City of Madera · Madera
- City of Manteca · Manteca
- City of Martinez · Martinez
- City of McFarland · McFarland
- City of Mendota · Mendota
- City of Merced · Merced
- City of Millbrae · Millbrae
- City of Milpitas · Milpitas
- City of Modesto · Modesto
- City of Modesto - Salida · Modesto
- City of Morgan Hill · Morgan Hill
- City of Mountain House · Mountain House
- City of Mountain View · Mountain View
- City of Napa · Napa
- City of Newman-Water Department · Newman
- City of Newport Beach · Newport Beach
- City of Norco · Norco
- City of Oakdale · Oakdale
- City of Oceanside · Oceanside
- City of Orange · Orange
- City of Palo Alto · Palo Alto
- City of Parlier · Parlier
- City of Paso Robles Water Division · Paso Robles
- City of Patterson · Patterson
- City of Petaluma · Petaluma
- City of Pittsburg · Pittsburg
- City of Pleasanton · Pleasanton
- City of Porterville · Porterville
- City of Poway · Poway
- City of Red Bluff · Red Bluff
- City of Redding · Redding
- City of Redwood City · Redwood City
- City of Reedley · Reedley
- City of Rialto · Rialto
- City of Rio Vista · Rio Vista
- City of Ripon · Ripon
- City of Riverbank · Riverbank
- City of Riverside · Riverside
- City of Rohnert Park · Rohnert Park
- City of Roseville · Roseville
- City of Sacramento Main · Sacramento
- City of San Bruno · San Bruno
- City of San Clemente · San Clemente
- City of San Diego · San Diego
- City of San Jacinto · San Jacinto
- City of San Jose - Evg/Edv/Coy · San Jose
- City of San Jose - Nsj/Alviso · San Jose
- City of Sanger · Sanger
- City of Santa Ana · Santa Ana
- City of Santa Barbara Water Department · Santa Barbara
- City of Santa Clara · Santa Clara
- City of Santa Maria Utilities Department · Santa Maria
- City of Santa Paula · Santa Paula
- City of Santa Rosa · Santa Rosa
- City of Seal Beach · Seal Beach
- City of Shafter · Shafter
- City of Shasta Lake · Shasta Lake 4510007
- City of Soledad · Soledad
- City of Sonoma · Sonoma
- City of South Pasadena · South Pasadena
- City of Stockton · Stockton
- City of Sunnyvale · Sunnyvale
- City of Thousand Oaks Water Department · Thousand Oaks
- City of Tracy · Tracy
- City of Tulare · Tulare
- City of Turlock · Turlock
- City of Tustin · Tustin
- City of Ukiah · Ukiah
- City of Upland · Upland
- City of Vacaville · Vacaville
- City of Vallejo · Vallejo
- City of Wasco · Wasco
- City of Watsonville · Watsonville
- City of West Sacramento · West Sacramento
- City of Westminster · Westminster
- City of Woodland · Woodland
- City of Yuba City · Yuba City
- Coachella Vwd: Cove Community · Palm Desert
- Coachella Water Authority · Coachella
- Coalinga-City · Coalinga
- Coastside County Water District · Half Moon Bay
- Compton-City, Water Dept. · Compton
- Contra Costa Water District · Concord
- Covina-City, Water Dept. · Covina
- Crescenta Valley Cwd · La Crescenta
- Crestline Village Cwd - Division 10 · Crestline
- Cucamonga Valley Water District · Rancho Cucamonga
- CWS - Bakersfield · San Jose
- CWS - North Garden · San Jose
- CWS - Selma · San Jose
- CWS - Visalia · San Jose
- Cwsc King City · San Jose
- Cwsc Los Altos Suburban · San Jose
- Cwsc Salinas · San Jose
- Del Oro Water Co.-Paradise Pines · Chico
- Desert Water Agency · Palm Springs
- Diablo Water District · Oakley
- Downey - City, Water Dept. · Downey
- Dublin San Ramon Services District · Pleasanton
- East Bay Mud · Oakland
- East Biggs Water System · San Dimas
- East Niles Csd · Bakersfield
- East Valley Water District · Highland
- Eastern Municipal WD · Perris
- Edwards Afb - Main Base · Edwards Afb
- El Dorado Id - Main · Placerville
- El Monte-City, Water Dept. · El Monte
- El Segundo-City, Water Dept. · El Segundo
- El Toro Water District · Lake Forest
- Elk Grove Water District · Elk Grove
- Elsinore Valley MWD · Lake Elsinore
- Estero Municipal Improvement District · Foster City
- Fair Oaks Water District · Fair Oaks
- Fallbrook PUD · Fallbrook
- Fillmore Water Dept · Fillmore
- Folsom, City of - Main · Folsom
- Fort Bliss Main Post Area · San Dimas
- Glendale-City, Water Dept. · Glendale
- Glendora-City, Water Dept. · Glendora
- Golden State Water CO - Barstow · Apple Valley
- Golden State Water CO. - Cordova · Rancho Cordova
- Golden State Water Company - Bay Point · Rancho Cordova
- Golden State Water Company - Orcutt · Hawthorne
- Golden State Water Company - Simi Valley · Rancho Cordova
- Golden State Wc - Placentia/Yorba Linda · Anaheim
- Golden State Wc - West Orange County · Anaheim
- Goleta Water District · Goleta
- Great Oaks Wc Inc · San Jose
- Greenfield County WD · Bakersfield
- GSWC - Artesia · Anaheim
- GSWC - Bell, Bell Gardens · Anaheim
- GSWC - Claremont · San Dimas
- GSWC - Culver City · Santa Fe Springs
- GSWC - Florence/Graham · Anaheim
- GSWC - Norwalk · Anaheim
- GSWC - Southwest · Hawthorne
- GSWC - Willowbrook · Anaheim
- Gswc-San Dimas · San Dimas
- Gswc-South Arcadia · San Dimas
- Gswc-South San Gabriel · San Dimas
- Hawthorne-City Water Dept. · Hawthorne
- Helix Water District · La Mesa
- Hesperia WD · Hesperia
- Hi Desert WD · Yucca Valley
- Humboldt C.s.d. · Cutten
- Huntington Park-City, Water Dept. · Huntington Park
- Indian Hills Camp · Jamul
- Indian Wells Valley W.D. · Ridgecrest
- Indio Water Authority · Indio
- Inglewood- City, Water Dept. · Inglewood
- Irvine Ranch Water District · Irvine
- Jurupa Community Sd · Jurupa Valley
- LA Verne, City WD · La Verne
- Laguna Beach County WD · Laguna Beach
- Lake Hemet MWD · Hemet
- Lakeside WD · Lakeside
- Lakewood - City, Water Dept. · Lakewood
- Lamont Public Utility Dist · Lamont
- Las Virgenes MWD · Calabasas
- Lemoore Naval Air Station · Lemoore
- Liberty Utilities - Bellflower-Norwalk · Downey
- Liberty Utilities - Compton · Downey
- Liberty Utilities - Lynwood · Downey
- Liberty Utilities (av Ranchos) Corp. · Downey
- Lincoln Avenue Water CO. · Altadena
- Linda County Water District · Marysville
- Loma Linda University · Loma Linda
- Lomita-City, Water Dept. · Lomita
- Lompoc-City Water Utility Div · Lompoc
- Long Beach Utilities Department · Long Beach
- Los Angeles Cwwd 29 & 80-Malibu · Alhambra
- Los Angeles Cwwd 40 Reg 4 & 34 Lancaster · Alhambra
- Los Angeles Cwwd 40, R 24,27,33-Pearblsm · Alhambra
- Los Angeles Cwwd 40, Reg. 38-Lake LA · Alhambra
- Los Angeles-City, Dept. of Water & Power · Los Angeles
- Lynwood-City, Water Dept. · Lynwood
- Manhattan Beach-City, Water Dept. · Manhattan Beach
- Marin Municipal Water District · Corte Madera
- Marina Coast Water District · Marina
- McKinleyville C.s.d. · McKinleyville
- Menlo Park Municipal Water · Menlo Park
- Mesa Water District · Costa Mesa
- Mid-Peninsula Water District · Belmont
- Mission Springs WD · Desert Hot Springs
- Monrovia-City, Water Dept. · Monrovia
- Monte Vista WD · Montclair
- Montebello Land & Water CO. · Montebello
- Montecito Water Dist · Santa Barbara
- Monterey Park-City, Water Dept. · Monterey Park
- Morongo · Banning
- Morro Bay Pw Dept - Water Division · Morro Bay
- Moulton Niguel Water District · Laguna Hills
- Muscoy Mwc No. 1 · San Bernardino
- Nas North Island & Nab Coronado · San Diego
- Nasa Ames Research Center · Moffett Field
- Nevada Id - E. George, Banner Mountain · Grass Valley
- Nevada Id - Loma Rica · Grass Valley
- Nipomo Comm Services Dist · Nipomo
- North Coast County Water Dist · Pacifica
- North Marin Water District · Novato
- Northstar C.s.d. · Truckee
- Norwalk - City, Water Dept. · Norwalk
- Nps Ggnra · Sausalito
- Oildale Mwc · Bakersfield
- Olivehurst Public U.d. · Olivehurst
- Olivenhain MWD · Encinitas
- Ontario Municipal Utilities Company · Ontario
- Orange Vale Water Company · Orangevale
- Orchard Dale Water District · Whittier
- Otay Water District · Spring Valley
- Oxnard Water Dept · Oxnard
- Padre Dam MWD · Santee
- Pala North · Pala
- Palmdale Water Dist. · Palmdale
- Palomar Christian Conference Center · Palomar Mountain
- Paramount - City, Water Dept. · Paramount
- Pasadena Water and Power · Pasadena
- Pechanga · Temecula
- Phelan Pinon Hills Csd · Phelan
- Pico Rivera - City, Water Dept. · Pico Rivera
- Pico WD · Pico Rivera
- Pinedale County Water District · Pinedale
- Placer CWA - Auburn/Bowman · Auburn
- Placer CWA - Foothill · Auburn
- Plumas Lake · Olivehurst
- Pomona - City, Water Dept. · Pomona
- Port Hueneme City Water Dept · Port Hueneme
- Quartz Hill Water Dist. · Quartz Hill
- Rainbow Municipal WD · Fallbrook
- Ramona Municipal WD · Ramona
- Rancho California Water District · Temecula
- Red Hawk Casino - Shingle Springs · Shingle Springs
- Redlands City Mud-Water Div · Redlands
- Rincon Del Diablo MWD (id-1) · Escondido
- Rio Linda/Elverta Community Water Dist · Rio Linda
- Riverside Highland Water Company · Grand Terrace
- Rosamond Csd · Rosamond
- Rowland Water District · Rowland Heights
- Rubidoux Community Sd · Jurupa Valley
- Sacramento Suburban Water District · Sacramento
- San Bernardino City · San Bernardin0
- San Bernardino Valley WD · San Bernardino
- San Dieguito WD · Encinitas
- San Fernando-City, Water Dept. · San Fernando
- San Gabriel County WD · Rosemead
- San Gabriel Valley Water Co.-El Monte · El Monte
- San Gabriel Valley Wc - Fontana · Fontana
- San Jose Water · San Jose
- San Juan Water District · Granite Bay
- San Lorenzo Valley Water Dist · Boulder Creek
- San Luis Obispo Water Department · San Luis Obispo
- Santa Clarita Valley Water Agency · Newhall
- Santa Cruz Water Department · Santa Cruz
- Santa Fe I.d. · Rancho Santa Fe
- Santa Fe Springs - City, Water Dept. · Santa Fe Springs
- Santa Margarita Water District · Rancho Santa Margarita
- Santa Margarita Water District-Id9 · San Juan Capistrano
- Santa Monica-City, Water Division · Santa Monica
- Sbdno County Service Area 64 · San Bernardino
- Sbdno County Service Area 70j · San Bernardino
- Scotts Valley Water District · Scotts Valley
- Scwa - Arden Park Vista · Sacramento
- Scwa - Laguna/Vineyard · Sacramento
- Scwa Mather-Sunrise · Sacramento
- Sfpuc City Distribution Division · Burlingame
- Sierra Madre-City, Water Dept. · Sierra Madre
- Signal Hill - City, Water Dept. · Signal Hill
- Sonoma State University · Rohnert Park
- Soquel Creek Water District · Soquel
- South Coast Water District · Laguna Beach
- South Feather W&p - Miners Ranch · Oroville
- South Gate-City, Water Dept. · South Gate
- South Mesa Wc · Calimesa
- South Montebello Irrigation Dist. · Montebello
- South Tahoe PUD - Main · South Lake Tahoe
- Stanford University · Stanford
- Suburban Water Systems-La Mirada · Covina
- Suburban Water Systems-San Jose · Covina
- Suburban Water Systems-Whittier · Covina
- Suisun-Solano Water Authority · Vacaville
- Sunny Slope Water CO. · Pasadena
- Sunnyslope County Water Dist · Hollister
- Sweetwater Authority · Chula Vista
- Sycuan · El Cajon
- Table Mountain Rancheria · Table Mountain
- Tejon Castac WD - I5 & Laval Rd · Lebec
- Temescal Valley Water District · Temescal Valley
- Thermalito Water & Sewer Dist · Oroville
- Torrance-City, Water Dept. · Torrance
- Town of Discovery Bay · Discovery Bay
- Town of Hillsborough · Hillsborough
- Town of Windsor · Windsor
- Trabuco Canyon Water District · Trabuco Canyon
- Tract 180 Mutual Water CO. · Cudahy
- Triunfo Water & Sanitation District · Westlake Village
- Truckee-Donner PUD, Main · Truckee
- Tud - Sonora/Jamestown Water System · Sonora
- Tud - Upper Basin Water System · Sonora
- Twentynine Palms Water District · Twentynine Palms
- Uc - Davis · Davis
- Us Army Fort Irwin · Fort Irwin
- Usmc - 29 Palms · Twentynine Palms
- Vallecitos WD · San Marcos
- Valley Center MWD · Valley Center
- Valley County Water Dist. · Baldwin Park
- Valley of the Moon Water District · El Verano
- Valley Water CO. · La Canada Flintridge
- Vaughn Wc Inc · Bakersfield
- Ventura Cwwd No. 1 - Moorpark · Moorpark
- Ventura Water Department · Ventura
- Ventura Wwd No. 8 - Simi Valley · Simi Valley
- Vernon-City, Water Dept. · Vernon
- Victorville Water District · Victorville
- Vista Irrigation District · Vista
- Walnut Park Mutual Water CO. · Huntington Park
- Walnut Valley Water District · Walnut
- West Kern Water District · Taft
- West Valley Water District · Rialto
- Westborough Water District · South San Francisco
- Western MWD · Riverside
- Western MWD - Murrieta Division · Riverside
- Whittier-City, Water Dept. · Whittier
- Yocha Dehe Potable Water System · Brooks
- Yorba Linda Water District · Placentia
- Yucaipa Valley Water District · Yucaipa
Ver también
Fuente: EPA SDWIS, consultado 2026-06-11