California — all systems

California water systems A–Z

Page 3 of 11 · City of Newport Beach → Edna Beaman Elementary School. Every public water system we track in California, alphabetically. Each links to the system's measured contaminant levels against federal limits.

• City of Newport Beach (2024)
• City of Orange (2024)
• City of Orange Cove (2024)
• City of Orland (2023)
• City of Orland, Haigh Field Park (2024)
• City of Palo Alto — Palo Alto, Ca (2023)
• City of Parlier (2024)
• City of Paso Robles Water Division (2025)
• City of Pittsburg (2024)
• City of Pleasanton (2025)
• City of Portola (2023)
• City of Red Bluff (2025)
• City of Redding (2025)
• City of Redwood City (2024)
• City of Rio Vista — Rio Vista, Ca (2022)
• City of Roseville (2024)
• City of Sacramento Main — Sacramento, Ca (2023)
• City of San Bruno (2025)
• City of San Clemente (2025)
• City of San Jacinto (2024)
• City of San Jose - Nsj/alviso (2024)
• City of Sanger (2025)
• City of Santa Barbara Water Department — Santa Barbara, Ca (2023)
• City of Santa Maria Utilities Department (2025)
• City of Santa Paula (2025)
• City of Seal Beach (2024)
• City of Shasta Lake (2025)
• City of South Pasadena (2024)
• City of Stockton (2026)
• City of Sunnyvale (2025)
• City of Susanville (2025)
• City of Tehama (2024)
• City of Thousand Oaks Water Department (2025)
• City of Tustin (2024)
• City of Vallejo-lakes System (2023)
• City of Waterford (2023)
• City of West Sacramento (2025)
• City of Westminster (2024)
• City of Wheatland (2023)
• City of Williams (2023)
• City of Winters (2023)
• City of Woodland (2025)
• City of Yuba City (2025)
• Clairemont (2023)
• Clark Pacific - Cr 18c (2025)
• Clark Street Community Well (2024)
• Clarksburg Comm Church (2025)
• Clarksburg Middle School (2025)
• Classic Yam Water System (2023)
• Clausen Meat Company (2024)
• Clawa — Crestline, Ca (2023)
• Clay Joint Elementary School (2025)
• Clayton Palms Water (2014)
• Clean Harbors Buttonwillow, Llc. (2025)
• Clear Creek Csd-anderson (2025)
• Clear Creek Csd-westwood (2024)
• Clear Creek Market (2025)
• Clear Creek Mobile Park (2025)
• Clear Creek School (2023)
• Clear Creek Water Company (2025)
• Clear Ridge Wa (2024)
• Clear Skies Mobile Home Park (2023)
• Clear Water Mutual Water Company (2025)
• Clearlake Oaks County Water District (2025)
• Clements Water Works #43 (2024)
• Cline Cellars (2025)
• Clio Public Utility District (2024)
• Clos Du Val Wine Co. (2023)
• Clover Flat Elementary School (2024)
• Cloverdale Mutual Water Co. (2023)
• Cloverdale, City of (2025)
• Clovis (2024)
• Coachella Vwd: Cove Community (2024)
• Coachella Vwd: I.d. No. 8 (2025)
• Coachella Water Authority (2023)
• Coalinga-city (2025)
• Coarsegold Market (2024)
• Coarsegold School (2024)
• Coast Springs - Cal. Water Service (puc) (2024)
• Coastal Christian School (2025)
• Coastlands Mws (post Creek) (2024)
• Coastside County Water District (2024)
• Cobb Area County Water District (2024)
• Cobles Corner (2025)
• Coe Orchard Equipment (2024)
• Cold Spring Granite Co Raymond (2025)
• Cold Springs Water Co (2023)
• Cold Water Canyon Mwc (2025)
• Coleman National Fish Hatchery (2025)
• Coleville High School (2024)
• College Park Mutual Water Company (2025)
• Colonia Santa Maria (2024)
• Colonial Oak Wc Inc (2023)
• Colonial Park (2024)
• Colorado Mutual Water Company (2025)
• Colton, City of (2025)
• Columbia Mobile Home Park (2023)
• Columbine School (2023)
• Columbine Vineyards Plant 1 Water System (2023)
• Colusa Co. Service Area #1-century Ranch (2024)
• Colusa Co. Service Area #2-stonyford (2024)
• Colusa Co. Wwd #1 - Grimes (2025)
• Colusa Co. Wwd #2 - Princeton (2025)
• Colusa Industrial Properties (2023)
• Commerce-city, Water Dept. — San Jose, Ca (2023)
• Community Mutual Water Co (2024)
• Compton-city, Water Dept. (2024)
• Comstock Mutual Water Company (2023)
• Comunidad Nuevo Lago, Inc (2025)
• Contra Costa Water District (2025)
• Control Gorge Power Plant LADWP (2025)
• Copco Lake Mwc (2025)
• Corcoran, City of (2024)
• Corda Rd Ws (2022)
• Corinthian Bay Mutual Water Company (2025)
• Corning Rv Park (2023)
• Corona, City of — Corona, Ca (2023)
• Corral De Tierra Country Club Ws (2025)
• Corral Hollow Pws (2024)
• Correctional Training Facility - Soledad — Soledad, Ca (2023)
• Cortland Pines Mutual Water Co (2025)
• Costanoa Campground (2025)
• Cosumnes River Elementary School (2025)
• Cotati, City of — Cotati, Ca (2023)
• Cottonwood Ridge Manufactured Housing Co (2025)
• Cottonwood School (2024)
• Cottonwood Water District — Cottonwood, Ca (2022)
• Country Club County Wd (2024)
• Country Club Vista Mutual Water Co (2023)
• Country Hills Estates (2025)
• Country Leisure Mobile Estates (2023)
• Country Life Mh & Rv Park (2024)
• Country Manor Mhp (2024)
• Country Squire Mobile Estates & Water Sy (2024)
• Country Villa Apts (2023)
• Country Village Mobile Home Park (2023)
• Country Western Mhrv (2025)
• Countryside Care Center (2023)
• Countryside Estates Mwc (2025)
• Countryside Mobile Home Park (2024)
• County of Monterey-lake Nacimiento (2025)
• County Service Area 11 (2024)
• County Service Area 7 (2025)
• Courage To Change (2025)
• Cove Mobile Villa (2024)
• Covelo Mobile Home Park (2025)
• Covina Irrigating Co. — West Covina, Ca (2023)
• Covina-city, Water Dept. (2025)
• Covington Mill - a (2025)
• Covington Mill Mwc-division B (2020)
• Coyote Creek Golf Club (2025)
• Coyote Valley Mutual Water Co (2023)
• Coyote Valley Rv Resort (2025)
• Cozad Water System (2024)
• Crain Walnut Shelling, Inc. (2024)
• Crass Mutual Water Company (2020)
• Creekbridge Mutual Water Company (2025)
• Creekside Cabins & Rv Resort (2022)
• Creekside Mobilehome Park (2025)
• Creekside Village (2025)
• Crescenta Valley Cwd (2023)
• Cressey School (2023)
• Cresta Mesa Parque (2025)
• Crestline Village Cwd - Division 10 — Crestline, Ca (2023)
• Creston Elementary School (2024)
• Crestview Mutual Water Co (2025)
• Crestwood Heights Water Assn (2025)
• Crew Wine Company (2025)
• Crockett (2024)
• Crowley Lake Mutual Water Company (2024)
• Crowley Lake Trailer Park (2024)
• Crows Landing Comm Svc District (2025)
• Crystal Caves Mhp (2025)
• Crystal Geyser Bottling Plant (2025)
• Crystal Lake Property Owners (2025)
• Crystals (2025)
• Csa 42 Oro Grande (2025)
• Csa 51 (2025)
• Csa 62 (2021)
• Csa 70 W-3 Hacienda (2024)
• Csa 70 W-4 Pioneertown (2023)
• Csa 70-f Morongo (2024)
• Csa No. 31 Stonegate Ws (2023)
• Csp Labs & Micro Paradox (2023)
• Csp-pfeiffer Big Sur (2025)
• Cucamonga Valley Water District (2024)
• Cuddeback Grammar School (2024)
• Cuesta La Honda Guild Inc (2023)
• Currier Estates Water Corp (2024)
• Cusd District Office (2024)
• Cutler Pud (2024)
• Cuyama Community Services District (2023)
• Cuyama Elementary School (2024)
• Cuyama Lane Water Company (2024)
• Cuyamaca Outdoor School (2025)
• Cuyamaca Water District (2024)
• Cvusd Facilities/m&o (2023)
• Cws - Bakersfield (2024)
• Cws - Fremont Valley (2025)
• Cws - Kernville (2025)
• Cws - Lakeland (2024)
• Cws - Lower Bodfish Water System (2025)
• Cws - Mullen Water Company (2023)
• Cws - North Garden (2024)
• Cws - Selma (2025)
• Cws - Tulco Water Company (2023)
• Cws - Upper Bodfish Water System (2025)
• Cws - Visalia (2025)
• Cws Southlake System (2025)
• Cws-grand Oaks Water System (2023)
• Cws-onyx Water System (2025)
• Cws-split Mountain Water System (2023)
• Cwsc King City — San Jose, Ca (2023)
• Cwsc Las Lomas (2024)
• Cwsc Los Altos Suburban (2025)
• Cwsc Oak Hills (2025)
• Cwsc Salinas (2025)
• Cwsc Salinas Hills (2025)
• Cypress Canyon Water System (2024)
• Cypress Center Ws (2023)
• Cypress Mutual Water Co Inc (2023)
• Daggett Comm Svcs Dist (2024)
• Dairyland School (2025)
• Danville (2024)
• Daou Vineyards, Llc (2025)
• Darioush Winery (2025)
• Darling Ingredients Turlock (2024)
• Darr Water Co (2025)
• Darwin Community Service District (2025)
• Dash Dream Plant (2025)
• Date Gardens Mobile Home Park (2022)
• Davenport County Sanitation (2023)
• Davis Estates (2025)
• Davis Jusd - Fairfield School (2025)
• Davis Migrant Center (ciudad Del Sol) (2020)
• Deep Springs College (2021)
• Deer Lodge Water System (2025)
• Deer Meadow Mutual Water Company (2023)
• Deetjen's Big Sur Inn Ws (2024)
• Defense Distrib. Depot - Tracy Site (2025)
• Defense Distrib. Depot, Sharpe Site (2025)
• Del Cerro (2023)
• Del Dios Mutual Water Company (2023)
• Del Mar, City of (2025)
• Del Monte Farms Rd Ws #03 (2023)
• Del Norte Mutual Water Co. (2024)
• Del Oro California Pines District (2024)
• Del Oro River Island Serv Terr #1 (2025)
• Del Oro River Island Serv Terr #2 (2025)
• Del Oro Traver District (2023)
• Del Oro Water Co - Metropolitan District (2025)
• Del Oro Water Co-ferndale (2024)
• Del Oro Water Co. - Hat Creek District (2023)
• Del Oro Water Co.-johnson Park (2024)
• Del Oro Water Co.-lime Saddle Marina (2023)
• Del Oro Water Co.-magalia (2023)
• Del Oro Water Co.-paradise Pines — Chico, Ca (2023)
• Del Oro Water Co.-stirling Bluffs (2023)
• Del Oro Water Company - Buzztail Dist. (2023)
• Del Oro Water Company - Strawberry Div. (2025)
• Del Oro Wc - Arbuckle District (2023)
• Del Oro Wc - Black Butte District (2023)
• Del Oro Wc - Country Estates Dist (2022)
• Del Oro Wc - Larkspur Meadows (2023)
• Del Rey (2023)
• Del Rey Community Serv Dist (2024)
• Del Rio East Hoa Water System (2022)
• Del Rio Mutual (2025)
• Del Sur Gardens Trailer Park (2025)
• Del Sur School/westside Union District (2024)
• Delano Growers Grape Products (2025)
• Delano, City of — Delano, Ca (2023)
• Delany Wc (2024)
• Delaware North Parks Services at Tenaya (2024)
• Delft Colony Water (2025)
• Delhi Cwd (2025)
• Delicato Vineyards (2024)
• Delores Lane Water System (2024)
• Delphic Elementary School (2025)
• Delta Conservation Camp (2024)
• Delta High School (2025)
• Delta Mutual Water Company (2025)
• Delta Shores Resort (2025)
• Delta Trading Water System (2025)
• Dempsey Road Mutual Water Co (2025)
• Denair Community Services District (2024)
• Department of Water and Power (2025)
• Descanso Community Water District (2025)
• Desert Dawn Mwc (2024)
• Desert Dunes Golf Club Ltd (2021)
• Desert Lake Comm Serv Dist (2025)
• Desert Palms Mobile Home Park (2024)
• Desert Sage Youth Wellness Center (2025)
• Desert Springs Mwc (2025)
• Desert View Trailer Park (2025)
• Desert Water Agency (2024)
• Desmond Rd Ws #03 (2023)
• Desotec Us Llc (2025)
• Devil Mountain Wholesale Nursery (2025)
• Devore Wc (2025)
• Dhs Border Patrol Hwy 94 Checkpoint (2025)
• Dhs Border Patrol I-8 Checkpoint (2025)
• Dhs Boulevard Border Patrol (2025)
• Dhs Calexico (2022)
• Di Giorgio School Water System (2023)
• Diablo Water District (2022)
• Diamond a Mutual Water Company (2023)
• Diamond Jack's Rv Ranch (2023)
• Diamond Jim S Casino (2024)
• Diamond Valley School (2024)
• Diede Trucking Water System (2025)
• Dillard Elementary School (2025)
• Dingerville Usa Park (2023)
• Dinuba, City of (2025)
• Dixieland Elementary School (2023)
• Dixon Migrant Center (2025)
• Dlj Properties, Llc (2017)
• Doctor's Park Owners Association (2024)
• Dodge Ridge Ski Resort (2025)
• Dogwood Blue Jay Cyn Imp (2023)
• Dolan Rd Mwc (2023)
• Dolan Rd Water System #2 (2025)
• Dole Atwater Plant (2023)
• Dolphin Isle Marina (2024)
• Domaine Carneros (2025)
• Domaine Chandon (2025)
• Don Pedro Rec Ag:flem.meadows (2025)
• Donner Summit Public Utility District (2023)
• Donner Trail Elementary School (2023)
• Doreva Produce (2023)
• Dorris, City of (2022)
• Double L Mobile Estates (2024)
• Doubletree Ranch Water System (2024)
• Doug Jones Water (2021)
• Down River an Itw Company (2025)
• Downey (2024)
• Downey - City, Water Dept. — Downey, Ca (2023)
• Downieville Public U.d. (2024)
• Downtown Graton Mutual Water System (2023)
• Driscoll Strawberry Ws (2023)
• Dry Creek Vineyard (2025)
• Drytown County Water District (2025)
• Duarte Nursery Inc Water System (2024)
• Dublin San Ramon Services District (2025)
• Duckhorn Vineyards (2023)
• Ducor Csd (2024)
• Dune 3 Mutual Water Company, Llc (2025)
• Dunham School (2024)
• Dunlap K-8 School (2025)
• Dunneville Estates Csa #50 (2024)
• Dunrovin Mobile Home Village (2019)
• Dunsmuir, City of (2025)
• Durham Dayton Industrial Partners-pro Pa (2023)
• Durham Ferry Community School (2024)
• Durham Irrigation District (2024)
• Dutch Slough Water Works (2024)
• Dutton Farmworker Housing (2024)
• DWP - Fawnskin (2023)
• Dwr - San Luis Division O&m (2025)
• Dwr Delta Field Division - Banks Pp (2020)
• Dwr-sutter Maintenance Yard (2023)
• Dynatect Ro-lab, Inc. (2025)
• E & J Gallo Winery (2025)
• E & J Gallo Winery-sonoma (2023)
• E Headstart (2017)
• E.m. Tharp, Inc. (2025)
• E&j Gallo Winery (2024)
• Eagle Rock (2023)
• Eagle's Nest Resort (2025)
• Earlimart Pud (2024)
• Earthrise Nutritionals, Llc (2021)
• East Acres Mutual Water Company (2024)
• East Bay Mud (2024)
• East Inyokern Mutual Water (2023)
• East Nicolaus Joint Union High School (2024)
• East Niles Csd — Bakersfield, Ca (2023)
• East Orange County Wd - Rz (2024)
• East Orosi Community Services District (2024)
• East Three Rivers Mutual Water Corp (2025)
• East Valley Farms Mutual Water Company (2024)
• East Valley Water District (2024)
• East Walnut Grove [sws] (2025)
• East Wilson Road Water Company (2023)
• Easterly Wwtp - Vacaville (2025)
• Eastern Municipal Wd (2025)
• Eastern Regional Sanitary Landfill Water (2023)
• Eastern Sierra College Center - Bishop (2024)
• Eastern Sierra Regional Airport (2023)
• Eastin (2024)
• Easton Authority Jpa (2025)
• Easton Estates Water Company (2024)
• Eastside Union School District (2025)
• Eastside Water Association — Midway City, Ca (2023)
• Eb Stone (2025)
• Ecco (2025)
• Echo Park (2023)
• Echo Valley Rd Ws #05 (2023)
• Echo Valley School Ws (2023)
• Edgewater Mobile Home Park (2024)
• Edna Beaman Elementary School (2024)