Water quality by city
Water quality in California
EPA drinking-water records for 1,285 public water systems across 626 California cities — the contaminants found and the certified filters that remove them. Pick your city for its full report.
Know your ZIP? Go straight to your water report.
Check by ZIP → San Jose ·PFAS 39 systems Sacramento ·PFAS 27 systems Bakersfield ·PFAS 18 systems Fresno ·PFAS 15 systems Napa 14 systems Anaheim ·PFAS 12 systems Madera 11 systems Modesto ·PFAS 11 systems San Bernardino ·PFAS 10 systems Hollister ·PFAS 9 systems Salinas 9 systems San Diego 9 systems Alhambra ·PFAS 8 systems Rancho Cordova ·PFAS 8 systems Santa Rosa 8 systems Stockton ·PFAS 8 systems Chico 7 systems Clovis ·PFAS 7 systems Klamath 7 systems Rosemead ·PFAS 7 systems San Dimas ·PFAS 7 systems Apple Valley ·PFAS 6 systems Covina ·PFAS 6 systems Downey ·PFAS 6 systems Grass Valley 6 systems Oxnard 6 systems Redding ·PFAS 6 systems Rosamond 6 systems Santa Barbara 6 systems Sonora ·PFAS 6 systems Bishop 5 systems Covelo 5 systems El Monte ·PFAS 5 systems Hanford 5 systems Lake Isabella 5 systems Lancaster 5 systems Needles 5 systems Oakhurst 5 systems Pauma Valley 5 systems Pine Valley ·PFAS 5 systems Reedley 5 systems San Luis Obispo 5 systems Tehachapi ·PFAS 5 systems Thermal 5 systems Weldon 5 systems Woodland 5 systems Calexico 4 systems Ceres ·PFAS 4 systems Costa Mesa 4 systems Crescent City 4 systems Escondido ·PFAS 4 systems Hughson 4 systems Indio 4 systems Julian 4 systems Laguna Beach ·PFAS 4 systems Los Angeles ·PFAS 4 systems Morgan Hill 4 systems Oakley 4 systems Ojai 4 systems Oroville ·PFAS 4 systems San Andreas 4 systems San Francisco ·PFAS 4 systems San Mateo 4 systems Santa Clarita ·PFAS 4 systems Santa Ysabel 4 systems Susanville 4 systems Tulare 4 systems Ukiah ·PFAS 4 systems Vacaville 4 systems Wasco 4 systems Yuba City 4 systems Altadena ·PFAS 3 systems Anderson 3 systems Angwin 3 systems Arroyo Grande ·PFAS 3 systems Atascadero ·PFAS 3 systems Avenal 3 systems Boulder Creek ·PFAS 3 systems Brentwood 3 systems Burlingame 3 systems Camarillo ·PFAS 3 systems Chowchilla ·PFAS 3 systems Coachella 3 systems Coalinga 3 systems Crestline ·PFAS 3 systems Delano 3 systems Encinitas ·PFAS 3 systems Firebaugh 3 systems Forestville 3 systems Hawthorne ·PFAS 3 systems Huntington Beach ·PFAS 3 systems Huntington Park ·PFAS 3 systems Imperial 3 systems Isleton 3 systems Jurupa Valley ·PFAS 3 systems Lakeport 3 systems Lemoore 3 systems Lompoc 3 systems Los Gatos 3 systems Mt. Shasta 3 systems Newport Beach 3 systems Nixon 3 systems Paicines 3 systems Palm Desert 3 systems Palmdale ·PFAS 3 systems Pasadena 3 systems Perris ·PFAS 3 systems Placerville ·PFAS 3 systems Pleasanton ·PFAS 3 systems Porterville ·PFAS 3 systems Ramona 3 systems Riverside ·PFAS 3 systems Rohnert Park ·PFAS 3 systems Sanger ·PFAS 3 systems Santa Cruz 3 systems Soledad 3 systems South Lake Tahoe ·PFAS 3 systems Sutter Creek 3 systems Terra Bella 3 systems Truckee ·PFAS 3 systems Turlock 3 systems Valley Center ·PFAS 3 systems Ventura ·PFAS 3 systems Watsonville ·PFAS 3 systems West Covina ·PFAS 3 systems Willits 3 systems Yreka 3 systems Yucca Valley ·PFAS 3 systems Alpine ·PFAS 2 systems Arvin 2 systems Auburn 2 systems Baldwin Park 2 systems Banning ·PFAS 2 systems Big Bear Lake ·PFAS 2 systems Big Pine 2 systems Biggs 2 systems Blythe 2 systems Brisbane ·PFAS 2 systems Camp Pendleton ·PFAS 2 systems Campo 2 systems Caruthers 2 systems Castaic ·PFAS 2 systems Castroville 2 systems Chino 2 systems Clearlake ·PFAS 2 systems Coarsegold ·PFAS 2 systems Cobb 2 systems Colusa 2 systems Compton ·PFAS 2 systems Cottonwood 2 systems Cudahy ·PFAS 2 systems Davis 2 systems Del Mar 2 systems Delhi ·PFAS 2 systems Denair 2 systems Descanso 2 systems El Centro 2 systems Elk Grove ·PFAS 2 systems Eureka 2 systems Fair Oaks ·PFAS 2 systems Fairfield 2 systems Fallbrook 2 systems Felton 2 systems Fillmore 2 systems Folsom 2 systems Friant 2 systems Garden Grove ·PFAS 2 systems Gilroy ·PFAS 2 systems Goleta ·PFAS 2 systems Granite Bay 2 systems Greenfield 2 systems Grover Beach 2 systems Gustine 2 systems Havasu Lake 2 systems Hemet 2 systems Huron 2 systems Jackson 2 systems Jamestown 2 systems Joshua Tree 2 systems June Lake 2 systems Kelseyville 2 systems La Mesa 2 systems La Puente 2 systems Lakeside ·PFAS 2 systems Lebec 2 systems Livermore 2 systems Lodi ·PFAS 2 systems Loma Linda ·PFAS 2 systems Los Banos 2 systems Mammoth Lakes 2 systems Manteca ·PFAS 2 systems Marysville 2 systems Maywood ·PFAS 2 systems Merced ·PFAS 2 systems Middletown 2 systems Mojave 2 systems Montebello ·PFAS 2 systems Nevada City 2 systems Newhall ·PFAS 2 systems Newman 2 systems Nicasio 2 systems Norco ·PFAS 2 systems North Edwards 2 systems North Fork 2 systems Novato 2 systems Oak View 2 systems Oakdale 2 systems Oakland ·PFAS 2 systems Ocotillo 2 systems Olivehurst 2 systems Ontario ·PFAS 2 systems Orange ·PFAS 2 systems Orange Cove 2 systems Orland 2 systems Pacific Grove ·PFAS 2 systems Pala ·PFAS 2 systems Palo Alto 2 systems Palomar Mountain 2 systems Paso Robles ·PFAS 2 systems Patterson 2 systems Petaluma 2 systems Phelan ·PFAS 2 systems Pico Rivera ·PFAS 2 systems Point Arena 2 systems Point Mugu 2 systems Pomona ·PFAS 2 systems Quartz Hill 2 systems Rancho Santa Fe ·PFAS 2 systems Rancho Santa Margarita 2 systems Rialto ·PFAS 2 systems Riverdale 2 systems Royal Oaks 2 systems San Marcos 2 systems Santa Ana ·PFAS 2 systems Santa Clara 2 systems Santa Fe Springs ·PFAS 2 systems Santee ·PFAS 2 systems Sebastopol 2 systems Simi Valley 2 systems Solvang ·PFAS 2 systems South San Francisco 2 systems St. Helena 2 systems Tahoe City 2 systems Temecula ·PFAS 2 systems Tollhouse 2 systems Tracy 2 systems Trinidad 2 systems Twentynine Palms 2 systems Upland ·PFAS 2 systems Vallejo 2 systems Valley Ford 2 systems Warner Springs 2 systems Waterford 2 systems Weed 2 systems Westlake Village 2 systems Whittier ·PFAS 2 systems Windsor 2 systems Winterhaven 2 systems Yucaipa ·PFAS 2 systems Adelanto ·PFAS 1 system Alderpoint 1 system Alpaugh 1 system Alturas ·PFAS 1 system American Canyon 1 system Angels Camp 1 system Antioch 1 system Anza 1 system Arcadia ·PFAS 1 system Arcata 1 system Armona 1 system Arnold 1 system Aromas 1 system Atwater ·PFAS 1 system Auberry 1 system Avalon ·PFAS 1 system Azusa ·PFAS 1 system Bakerfield 1 system Beale Afb 1 system Bear Valley 1 system Beaumont 1 system Bellflower ·PFAS 1 system Belmont 1 system Benicia ·PFAS 1 system Benton 1 system Bermuda Dunes 1 system Beverly Hills 1 system Big Bear City ·PFAS 1 system Big Creek 1 system Birds Landing 1 system Blairsden 1 system Boron 1 system Borrego Springs 1 system Boulevard 1 system Bradley 1 system Brawley 1 system Brea 1 system Bridgeport 1 system Brooks 1 system Buellton 1 system Buena Park ·PFAS 1 system Burbank ·PFAS 1 system Butte City 1 system Butte Meadows 1 system Calabasas 1 system California City 1 system Calimesa ·PFAS 1 system Calistoga ·PFAS 1 system Cambria 1 system Campbell 1 system Carlsbad 1 system Carmichael ·PFAS 1 system Carpinteria 1 system Cedar Glen 1 system Cerritos ·PFAS 1 system China Lake 1 system Chino Hills 1 system Chula Vista ·PFAS 1 system Citrus Heights 1 system Clearlake Oak 1 system Cloverdale 1 system Coleville 1 system Colton ·PFAS 1 system Concord 1 system Corcoran 1 system Corning 1 system Corona ·PFAS 1 system Corona Del Mar 1 system Coronado 1 system Corral De Tierra 1 system Corte Madera 1 system Cotati 1 system Crows Landing 1 system Cutler 1 system Cutten 1 system Daggett 1 system Daly City 1 system Darwin 1 system Desert Hot Springs 1 system Digiorgio 1 system Dillon Beach 1 system Dinuba 1 system Discovery Bay 1 system Dixon 1 system Dos Palos 1 system Duncans Mills 1 system Dunsmuir 1 system Earlimart 1 system East Palo Alto 1 system East Vale 1 system Edison 1 system Edwards Afb 1 system El Cajon 1 system El Segundo 1 system El Verano ·PFAS 1 system Eldorado Hills 1 system Eldridge 1 system Elk Creek 1 system Elmira ·PFAS 1 system Encino 1 system Escalon 1 system Esparto 1 system Exeter 1 system Farmersville 1 system Fontana 1 system Forest Falls 1 system Forest Ranch 1 system Foresthill 1 system Fort Bragg 1 system Fort Irwin 1 system Fortuna 1 system Foster City 1 system Fountain Valley ·PFAS 1 system Fowler ·PFAS 1 system Frazier Park 1 system Fremont 1 system Fullerton ·PFAS 1 system Galt 1 system Garberville 1 system Georgetown 1 system Geyserville 1 system Glendale ·PFAS 1 system Glendora 1 system Gonzales 1 system Grand Terrace ·PFAS 1 system Green Valley Lake 1 system Gridley ·PFAS 1 system Grimes 1 system Groveland ·PFAS 1 system Guadalupe 1 system Guatay 1 system Guerneville 1 system Half Moon Bay 1 system Hayward 1 system Healdsburg ·PFAS 1 system Heber 1 system Helendale ·PFAS 1 system Helm 1 system Hermosa Beach 1 system Hesperia ·PFAS 1 system Hidden Valley Lake 1 system Highland ·PFAS 1 system Hillsborough 1 system Hilmar 1 system Holtville 1 system Hoopa 1 system Hornbrook 1 system Hydesville 1 system Idyllwild 1 system Imperial Beach 1 system Inglewood ·PFAS 1 system Ione 1 system Irvine ·PFAS 1 system Ivanhoe 1 system Jamul 1 system Jose 1 system Junction City 1 system Kerman 1 system Keyes 1 system King George 1 system Kingsburg 1 system Kirkwood 1 system Knightsen 1 system Kyburz 1 system La Canada 1 system La Canada Flintridge 1 system La Crescenta ·PFAS 1 system La Habra 1 system La Habra Heights ·PFAS 1 system La Honda 1 system La Jolla 1 system La Palma 1 system La Verne 1 system Ladera Ranch 1 system Lafayette 1 system Laguna Hills 1 system Laguna Niguel 1 system Lake Almanor 1 system Lake Arrowhead ·PFAS 1 system Lake Elsinore ·PFAS 1 system Lake Forest ·PFAS 1 system Lake Hughes 1 system Lake Of The Woods 1 system Lakewood ·PFAS 1 system Lamont 1 system Las Angeles 1 system Lathrop ·PFAS 1 system Laton ·PFAS 1 system Le Grand 1 system Lincoln ·PFAS 1 system Lindsay ·PFAS 1 system Little Valley 1 system Live Oak ·PFAS 1 system Livingston 1 system Lockeford 1 system Loleta 1 system Lomita ·PFAS 1 system Long Beach 1 system Los Alamitos 1 system Los Altos 1 system Los Altos Hills 1 system Los Molinos 1 system Los Osos ·PFAS 1 system Lower Lake 1 system Ludlow 1 system Lynwood ·PFAS 1 system Manhattan Beach 1 system Marina 1 system Marina Del Rey 1 system Mariposa 1 system Martinez 1 system Mccloud 1 system Mcfarland 1 system Mckinleyville 1 system Meadow Vista 1 system Mecca 1 system Mendocino 1 system Mendota 1 system Menlo Park 1 system Millbrae 1 system Milpitas 1 system Mineral 1 system Mira Loma 1 system Moffett Field 1 system Monrovia ·PFAS 1 system Montague 1 system Montara 1 system Montclair ·PFAS 1 system Monterey Park ·PFAS 1 system Moorpark 1 system Moreno Valley 1 system Morgann Hill ·PFAS 1 system Morro Bay 1 system Mountain Center 1 system Mountain House 1 system Mountain View 1 system Mt. Baldy 1 system Murphys 1 system Newberry Springs 1 system Nipomo 1 system Norwalk ·PFAS 1 system Nuevo ·PFAS 1 system Occidental 1 system Oceano 1 system Oceanside 1 system Orangevale 1 system Orleans 1 system Orosi 1 system Pacifica 1 system Palm Springs 1 system Palo Verde 1 system Paradise 1 system Paramount 1 system Parlier 1 system Pescadero 1 system Phillipsville 1 system Pinedale ·PFAS 1 system Pismo Beach 1 system Pittsburg 1 system Placentia ·PFAS 1 system Planada ·PFAS 1 system Plymouth 1 system Port Hueneme 1 system Portola 1 system Poway 1 system Quincy ·PFAS 1 system Rancho Cucamonga 1 system Rancho Cucuamonga 1 system Rancho Murieta 1 system Rancho Palos Verdes 1 system Red Bluff ·PFAS 1 system Redlands ·PFAS 1 system Redwood City 1 system Redwood Valley 1 system Represa ·PFAS 1 system Richgrove 1 system Ridgecrest 1 system Rio Dell 1 system Rio Linda ·PFAS 1 system Rio Oso 1 system Rio Vista 1 system Ripon ·PFAS 1 system Riverbank 1 system Roseville 1 system Rowland Heights ·PFAS 1 system Running Springs ·PFAS 1 system Rutherford 1 system Salyer 1 system San Bruno 1 system San Clemente 1 system San Fernando 1 system San Jacinto 1 system San Joaquin 1 system San Juan Bautista 1 system San Ramon 1 system Santa Maria 1 system Santa Nella 1 system Santa Paula 1 system Santa Ynez 1 system Sausalito 1 system Scotia 1 system Scotts Valley ·PFAS 1 system Sea Ranch ·PFAS 1 system Seal Beach 1 system Seeley 1 system Selma 1 system Shafter 1 system Shasta Lake 1 system Shingle Springs 1 system Shoshone 1 system Sierra Madre 1 system Signal Hill 1 system Soda Springs 1 system Somis 1 system Sonoma ·PFAS 1 system Soquel 1 system South Gate ·PFAS 1 system South Pasadena 1 system Spring Valley 1 system Springville 1 system St Helena 1 system St Helenea 1 system Stanford 1 system Strathmore 1 system Sultana 1 system Sunnyvale 1 system Taft 1 system Tahoe Vista 1 system Talmage 1 system Temescal Valley 1 system Templeton ·PFAS 1 system Thousand Oaks 1 system Three Rivers 1 system Tomales 1 system Torrance 1 system Trabuco Canyon 1 system Tranquillity 1 system Trinity Center 1 system Tulelake 1 system Tustin ·PFAS 1 system Twin Bridges ·PFAS 1 system Valencia 1 system Valyermo 1 system Vandenberg Sfb 1 system Vernon 1 system Victorville 1 system Villa Park ·PFAS 1 system Visalia 1 system Vista 1 system Walnut 1 system Walnut Grove 1 system Weaverville ·PFAS 1 system Weott 1 system West Hollywood 1 system West Sacramento 1 system Westminster ·PFAS 1 system Westmorland 1 system Wheatland ·PFAS 1 system Whitethorn 1 system Wildomar ·PFAS 1 system Williams 1 system Winters ·PFAS 1 system Winton 1 system Wofford Heights 1 system Woodlake 1 system Yorba Linda 1 system Yountville 1 system