California

California drinking water quality

Every public water system in California we've verified. Each report covers one calendar year and shows the utility's own measured contaminant levels against federal limits.

Want the national picture? See where California lands in our ranking of the states with the most open health-based water violations, pulled from the EPA's own records for every U.S. public water system.

4,320 water systems mapped in California · showing the 800 with the most contaminant flags — explore them all on the map

Browse all 4,320 systems A–Z:1234567891011

• Delano, City of — Delano, Ca (2023)
  33 contaminants measured· 11 at or above the limit
• Sweetwater Authority — Chula Vista, Ca (2023)
  38 contaminants measured· 6 at or above the limit
• San Bernardino Valley Wd — San Bernardino, Ca (2023)
  22 contaminants measured· 5 at or above the limit
• Corona, City of — Corona, Ca (2023)
  31 contaminants measured· 4 at or above the limit
• Montara Water and Sanitary District — Montara, Ca (2023)
  19 contaminants measured· 4 at or above the limit
• Glendale (2024)
  38 contaminants measured· 4 at or above the limit
• Burbank (2024)
  47 contaminants measured· 4 at or above the limit
• California Domestic Water Company — Whittier, Ca (2021)
  23 contaminants measured· 3 at or above the limit
• Moreno Valley (2024)
  30 contaminants measured· 3 at or above the limit
• City of San Jacinto (2024)
  30 contaminants measured· 3 at or above the limit
• San Miguel Community Services District — San Miguel, Ca (2023)
  16 contaminants measured· 3 at or above the limit
• Lake Arrowhead Csd — Lake Arrowhead, Ca (2023)
  26 contaminants measured· 2 at or above the limit
• St. Helena, City of — St. Helena, Ca (2023)
  7 contaminants measured· 2 at or above the limit
• China Lake Naval Air Weapons Station — China Lake, Ca (2023)
  13 contaminants measured· 2 at or above the limit
• City of Bell Gardens — Downey, Ca (2023)
  27 contaminants measured· 2 at or above the limit
• Crestline Village Cwd - Division 10 — Crestline, Ca (2023)
  13 contaminants measured· 2 at or above the limit
• Downey - City, Water Dept. — Downey, Ca (2023)
  36 contaminants measured· 2 at or above the limit
• Norwalk - City, Water Dept. — Norwalk, Ca (2022)
  25 contaminants measured· 2 at or above the limit
• Paradise Ranch Mhp — Beverly Hills, Ca (2023)
  32 contaminants measured· 2 at or above the limit
• Templeton Csd — Templeton, Ca (2023)
  27 contaminants measured· 2 at or above the limit
• Terrace Water Company — Colton, Ca (2023)
  42 contaminants measured· 2 at or above the limit
• Tract 349 Mutual Water Co. — Cudahy, Ca (2023)
  20 contaminants measured· 2 at or above the limit
• Wasco, City of — Wasco, Ca (2023)
  11 contaminants measured· 2 at or above the limit
• Fullerton (2024)
  46 contaminants measured· 2 at or above the limit
• Downey (2024)
  36 contaminants measured· 2 at or above the limit
• Solvang Water Division — Solvang, Ca (2023)
  44 contaminants measured· 1 at or above the limit
• Los Angeles Cwwd 36-val Verde — Alhambra, Ca (2023)
  53 contaminants measured· 1 at or above the limit
• Central Ca Womens Facility — Chowchilla, Ca (2023)
  13 contaminants measured· 1 at or above the limit
• Foothill Municipal Water Dist. — La Canada Flintridge, Ca (2023)
  128 contaminants measured· 1 at or above the limit
• Golden State Water Company - Simi Valley — Rancho Cordova, Ca (2023)
  16 contaminants measured· 1 at or above the limit
• Otay Water District — Spring Valley, Ca (2023)
  20 contaminants measured· 1 at or above the limit
• East Niles Csd — Bakersfield, Ca (2023)
  15 contaminants measured· 1 at or above the limit
• Suisun-solano Water Authority — Vacaville, Ca (2023)
  9 contaminants measured· 1 at or above the limit
• Valley of Enchantment Mwc — Crestline, Ca (2023)
  10 contaminants measured· 1 at or above the limit
• Westmorland, City of — Westmorland, Ca (2022)
  17 contaminants measured· 1 at or above the limit
• Yosemite Spring Park Util Co — Coarsegold, Ca (2023)
  42 contaminants measured· 1 at or above the limit
• Castlewood Domestic Water System (2023)
  1 contaminants measured· 1 at or above the limit
• Meadowbrook Oaks (2024)
  1 contaminants measured· 1 at or above the limit
• Sierra High School (2025)
  1 contaminants measured· 1 at or above the limit
• Casterlin School (2025)
  1 contaminants measured· 1 at or above the limit
• Meadows Union Elementary School (2021)
  1 contaminants measured· 1 at or above the limit
• Sky Acres Mutual Water Corp (2025)
  1 contaminants measured· 1 at or above the limit
• Black Rascal Water Company (2024)
  1 contaminants measured· 1 at or above the limit
• Firestone Business Park Ws (2025)
  1 contaminants measured· 1 at or above the limit
• Graves School Ws (2025)
  1 contaminants measured· 1 at or above the limit
• Washington Water District (2023)
  1 contaminants measured· 1 at or above the limit
• Cvusd Facilities/m&o (2023)
  1 contaminants measured· 1 at or above the limit
• Willow Grove Union Elementary School (2023)
  1 contaminants measured· 1 at or above the limit
• Vachell Water System (2025)
  1 contaminants measured· 1 at or above the limit
• Gaviota Oil Heating Facility (2022)
  1 contaminants measured· 1 at or above the limit
• Reynolds Consumer Products (red Bluff) (2024)
  1 contaminants measured· 1 at or above the limit
• Cabazon Water District — Cabazon, Ca (2023)
  22 contaminants measured· 1 at or above the limit
• City of Dos Palos — Dos Palos, Ca (2023)
  5 contaminants measured· 1 at or above the limit
• Esparto C.s.d. — Esparto, Ca (2023)
  10 contaminants measured· 1 at or above the limit
• Foresthill Public Utility Dist — Foresthill, Ca (2023)
  6 contaminants measured· 1 at or above the limit
• Green Valley Mwc — Green Valley Lake, Ca (2023)
  19 contaminants measured· 1 at or above the limit
• Gswc-south Arcadia — San Dimas, Ca (2023)
  18 contaminants measured· 1 at or above the limit
• Lemoore Naval Air Station — Lemoore, Ca (2023)
  10 contaminants measured· 1 at or above the limit
• Lincoln Avenue Water Co. — Altadena, Ca (2022)
  24 contaminants measured· 1 at or above the limit
• South Tahoe Pud - Main — South Lake Tahoe, Ca (2023)
  75 contaminants measured· 1 at or above the limit
• Sutter Community S.d. — Sutter, Ca (2023)
  6 contaminants measured· 1 at or above the limit
• Tulare, City of — Tulare, Ca (2023)
  21 contaminants measured· 1 at or above the limit
• Awa - Tiger Creek Powerhouse (2025)
  1 contaminants measured· 1 at or above the limit
• Pg&e - Table Mountain (2024)
  1 contaminants measured· 1 at or above the limit
• United Parcel Service (2017)
  1 contaminants measured· 1 at or above the limit
• Blue Lake Springs Mut Wtr (2024)
  1 contaminants measured· 1 at or above the limit
• Marina Mobile Manor (2025)
  1 contaminants measured· 1 at or above the limit
• Redwood Maint. & Oper. (2024)
  1 contaminants measured· 1 at or above the limit
• Burrel Union Elementary School (2024)
  1 contaminants measured· 1 at or above the limit
• Houghton-kearney School (2025)
  1 contaminants measured· 1 at or above the limit
• Hume Lake Christian Camps, Inc (2023)
  1 contaminants measured· 1 at or above the limit
• Beach Creek Mobile Home Park (2024)
  1 contaminants measured· 1 at or above the limit
• Kern Ridge Growers (2025)
  1 contaminants measured· 1 at or above the limit
• 15th Avenue (2025)
  1 contaminants measured· 1 at or above the limit
• Camp Scott and Scudder (2023)
  1 contaminants measured· 1 at or above the limit
• Certainteed Llc (2025)
  1 contaminants measured· 1 at or above the limit
• Blackhawk Center Water System (2023)
  1 contaminants measured· 1 at or above the limit
• Woodside Rv Park (2025)
  1 contaminants measured· 1 at or above the limit
• Hills Ranch Mutual Water Company (2025)
  1 contaminants measured· 1 at or above the limit
• Syar Industries (2025)
  1 contaminants measured· 1 at or above the limit
• Bayer Research and Development Llc (2025)
  1 contaminants measured· 1 at or above the limit
• Creekbridge Mutual Water Company (2025)
  1 contaminants measured· 1 at or above the limit
• Sky Forest Mwc (2025)
  1 contaminants measured· 1 at or above the limit
• California Steel Industries (2021)
  1 contaminants measured· 1 at or above the limit
• Usmc - 29 Palms (2024)
  1 contaminants measured· 1 at or above the limit
• Guatay Mutual Benefit Corporation (2024)
  1 contaminants measured· 1 at or above the limit
• J M Eagle (ws) (2025)
  1 contaminants measured· 1 at or above the limit
• Linden Usd-chartville School (2025)
  1 contaminants measured· 1 at or above the limit
• San Simeon Csd (2025)
  1 contaminants measured· 1 at or above the limit
• Country Hills Estates (2025)
  1 contaminants measured· 1 at or above the limit
• Holdgrafer & Associates (2024)
  1 contaminants measured· 1 at or above the limit
• Camp Jones Gulch (2025)
  1 contaminants measured· 1 at or above the limit
• Kinecta Fcu (2025)
  1 contaminants measured· 1 at or above the limit
• Bonita School (2020)
  1 contaminants measured· 1 at or above the limit
• Chemeketa Park Mutual Water Company (2025)
  1 contaminants measured· 1 at or above the limit
• Hill Country Community Clinic & Wellness (2025)
  1 contaminants measured· 1 at or above the limit
• Shadow Mountain Mhp (2025)
  1 contaminants measured· 1 at or above the limit
• Stonegate Mobile Home Park (2024)
  1 contaminants measured· 1 at or above the limit
• Calpine (west Field Office) (2025)
  1 contaminants measured· 1 at or above the limit
• At&t Water System (2021)
  1 contaminants measured· 1 at or above the limit
• Trinity Co. W.w. Dist #1 (2024)
  1 contaminants measured· 1 at or above the limit
• Harris Moran Seed Company - Water (2024)
  1 contaminants measured· 1 at or above the limit
• Wheatland Park Estates (2023)
  1 contaminants measured· 1 at or above the limit
• Santa Clarita (2024)
  31 contaminants measured· 1 at or above the limit
• Huntington Beach (2025)
  38 contaminants measured· 1 at or above the limit
• Inglewood (2023)
  38 contaminants measured· 1 at or above the limit
• City of Buellton Water Division — Buellton, Ca (2023)
  22 contaminants measured
• Planada Csd — Planada, Ca (2023)
  8 contaminants measured
• So. Cal. Edison Co.-santa Catalina — Avalon, Ca (2023)
  39 contaminants measured
• San Jose (2024)
  23 contaminants measured
• City of Cupertino (2024)
  23 contaminants measured
• Calexico, City of — Calexico, Ca (2023)
  11 contaminants measured
• Pine Ridge School (2025)
  1 contaminants measured
• Riverbend Mobile Home Park (2025)
  1 contaminants measured
• Spring Mountain Mutual Water Company (2021)
  1 contaminants measured
• Crass Mutual Water Company (2020)
  1 contaminants measured
• Spreckels Ln Ws #02 (2024)
  1 contaminants measured
• Sable Offshore Corp Popco (2024)
  1 contaminants measured
• Cedar Creek Mobilehome Park (2023)
  1 contaminants measured
• Accelerated Charter High School (2025)
  1 contaminants measured
• Leisure Pines Mutual Water Co (2022)
  1 contaminants measured
• Pinecrest Permittees Assn (2025)
  1 contaminants measured
• Alpine Water Users Association — Twin Peaks, Ca (2023)
  9 contaminants measured
• Armona Community Services Dist — Armona, Ca (2023)
  9 contaminants measured
• California Water Service Co.-lancaster — San Jose, Ca (2023)
  17 contaminants measured
• Casitas Municipal Water Dist — Oak View, Ca (2023)
  13 contaminants measured
• City of Modesto - Salida — Modesto, Ca (2023)
  11 contaminants measured
• City of Rio Vista — Rio Vista, Ca (2022)
  17 contaminants measured
• Cottonwood Water District — Cottonwood, Ca (2022)
  7 contaminants measured
• Hi Desert Wd — Yucca Valley, Ca (2023)
  10 contaminants measured
• Loma Linda, City of — Loma Linda, Ca (2023)
  28 contaminants measured
• Lopez Project — San Luis Obispo, Ca (2023)
  16 contaminants measured
• Los Osos Community Services District — Los Osos, Ca (2023)
  13 contaminants measured
• North Marin Water District — Novato, Ca (2023)
  17 contaminants measured
• Paradise Irrigation District — Paradise, Ca (2023)
  25 contaminants measured
• Slocsa #10a - Cayucos — San Luis Obispo, Ca (2023)
  14 contaminants measured
• Candlelight Village Mutual Water Co. (2024)
  1 contaminants measured
• Fcsa 30 - El Porvenir (2023)
  1 contaminants measured
• Fresno Clovis Rwrf Water System (2023)
  1 contaminants measured
• Tejon Ranch Grapevine Water (2023)
  1 contaminants measured
• A.f.p. Mutual Water Company (2024)
  1 contaminants measured
• Schweikart Water System (2025)
  1 contaminants measured
• Bass Lake Annex 3 (2024)
  1 contaminants measured
• Coarsegold School (2024)
  1 contaminants measured
• Madera Community College (2023)
  1 contaminants measured
• Mendocino School District- Mendocino (2025)
  1 contaminants measured
• Hidden Views Mhp Ws (2024)
  1 contaminants measured
• Cal Am Water Company - Toro (2025)
  1 contaminants measured
• Camp Roberts - California National Guard (2024)
  1 contaminants measured
• Shady Lake Water Association (2024)
  1 contaminants measured
• Plavada Community Association (2023)
  1 contaminants measured
• Olympic Valley Psd (2024)
  1 contaminants measured
• Imperial Manor Mobilehome Community (2023)
  1 contaminants measured
• Carson Landscape Industries (2022)
  1 contaminants measured
• Los Madrones Mwc (2023)
  1 contaminants measured
• Gilbert Street Complex (2025)
  1 contaminants measured
• H & J Water Company (2023)
  1 contaminants measured
• Camp Stevens (2025)
  1 contaminants measured
• Puerta La Cruz Cc #14 (2025)
  1 contaminants measured
• El Rio Mobile Home Park (2024)
  1 contaminants measured
• Pacific Coast Energy Company (2024)
  1 contaminants measured
• Big Basin Water Company (2025)
  1 contaminants measured
• Ben Lomond Conservation Camp (2025)
  1 contaminants measured
• Foley Family Wines Chateau St. Jean (2024)
  1 contaminants measured
• Speedway Sonoma Llc (2023)
  1 contaminants measured
• Modesto, City of (2025)
  1 contaminants measured
• Four Star Fruit (2025)
  1 contaminants measured
• Strathmore Public Util Dist (2024)
  1 contaminants measured
• Nps-wolverton (2025)
  1 contaminants measured
• Mi Wuk Village Mut Wtr Co (2023)
  1 contaminants measured
• Ontario (2024)
  42 contaminants measured
• Victorville (2024)
  29 contaminants measured
• Pasadena (2023)
  65 contaminants measured
• Ceres, City of — Ceres, Ca (2023)
  16 contaminants measured
• City of Los Banos — Los Banos, Ca (2023)
  18 contaminants measured
• Liberty Park Water Association — Huntington Beach, Ca (2023)
  22 contaminants measured
• Llano Del Rio Water Company — Llano, Ca (2023)
  17 contaminants measured
• Riverstone/rootcreek Water District — Fresno, Ca (2023)
  14 contaminants measured
• San Lorenzo Valley Water Dist — Boulder Creek, Ca (2023)
  14 contaminants measured
• Slvwd - Felton Water System — Boulder Creek, Ca (2023)
  14 contaminants measured
• Norris Canyon Property Owners Assn (2024)
  1 contaminants measured
• Alameda County Fairgrounds (2020)
  1 contaminants measured
• Sierra Pines Mobile Home Park (2025)
  1 contaminants measured
• Alpine Co Community Development (2022)
  1 contaminants measured
• Sunset West Mutual Water Company (2025)
  1 contaminants measured
• River Pines Pud (2023)
  1 contaminants measured
• First Mace Meadow # 1 (2024)
  1 contaminants measured
• Hartley Mutual Water System (2017)
  1 contaminants measured
• Forest Ranch Mutual Water System (2025)
  1 contaminants measured
• Pleasant Grove Mhp (2023)
  1 contaminants measured
• Robinson's Corner Mhp (2021)
  1 contaminants measured
• Foothills Manufactured Home Communuty (2023)
  1 contaminants measured
• Almond Grove Mobile Park (2023)
  1 contaminants measured
• Richvale Elementary School (2025)
  1 contaminants measured
• Manzanita Elementary School (2024)
  1 contaminants measured
• Spring Valley School (2025)
  1 contaminants measured
• Feather River School (2022)
  1 contaminants measured
• Forest Knolls Mutual Water Co (2025)
  1 contaminants measured
• Forest Ranch Charter School (2023)
  1 contaminants measured
• Mountain Village Homeowner's Assoc (2025)
  1 contaminants measured
• Lundberg Family Farm (2025)
  1 contaminants measured
• Humboldt Woodlands Mutual (2023)
  1 contaminants measured
• Truroots (2025)
  1 contaminants measured
• Biggers Glen Mutual Water Co (2025)
  1 contaminants measured
• Francis Property Management (2024)
  1 contaminants measured
• Pleasant Valley Baptist Church (2020)
  1 contaminants measured
• Silver Dollar Fairgrounds (2024)
  1 contaminants measured
• Sierra Moon Mutual Water Company (2024)
  1 contaminants measured
• City of Biggs (2024)
  1 contaminants measured
• City of Gridley (2023)
  1 contaminants measured
• Mineral Mountain Mutual Water (2023)
  1 contaminants measured
• Lili Valley Water Co. (2018)
  1 contaminants measured
• Rite of Passage/sierra Ridge (2023)
  1 contaminants measured
• Angels, City of (2023)
  1 contaminants measured
• Oakley Mutual Water Company (2025)
  1 contaminants measured
• Colonia Santa Maria (2024)
  1 contaminants measured
• Orwood Resort (2024)
  1 contaminants measured
• Sandmound Mutual (2025)
  1 contaminants measured
• Bella Vista Water Sys (2019)
  1 contaminants measured
• Sandy Point Mobile Home Park (2020)
  1 contaminants measured
• Russos Mobile Park (2017)
  1 contaminants measured
• Canyon School (2020)
  1 contaminants measured
• Redwood Park C.s.d. (2020)
  1 contaminants measured
• Hunter Valley Csd (2017)
  1 contaminants measured
• West Park Properties (2023)
  1 contaminants measured
• Las Palmas Mobile Home Park (2025)
  1 contaminants measured
• Jed Smith Homeowners Assn. (2024)
  1 contaminants measured
• Calfire-alder Conservation Camp (2023)
  1 contaminants measured
• Pioneer Elementary School (2025)
  1 contaminants measured
• Mountain Creek School (2024)
  1 contaminants measured
• South Shore Recreation Area (2025)
  1 contaminants measured
• Big Creek Community Serv Dist (2025)
  1 contaminants measured
• Tract 1199 Water System (2024)
  1 contaminants measured
• Wonder Valley River Way Ranch (2025)
  1 contaminants measured
• Helm School (2025)
  1 contaminants measured
• Indianola School (2024)
  1 contaminants measured
• Laton High School (2025)
  1 contaminants measured
• Monroe School (2024)
  1 contaminants measured
• Terry School (2024)
  1 contaminants measured
• Rubys Valley Care Home (2024)
  1 contaminants measured
• American Union School (2025)
  1 contaminants measured
• Easton Authority Jpa (2025)
  1 contaminants measured
• Green Acres Mobile Home Estate (2025)
  1 contaminants measured
• Sherwood Forest Mhp (2023)
  1 contaminants measured
• Elm Court (2022)
  1 contaminants measured
• Kings Park Apartments (2024)
  1 contaminants measured
• Three Palms Mobilehome Park (2025)
  1 contaminants measured
• Clay Joint Elementary School (2025)
  1 contaminants measured
• Sunnyside Convalescent Hosp (2025)
  1 contaminants measured
• Selma High School (2024)
  1 contaminants measured
• St Nicholas Ranch & Retreat (2025)
  1 contaminants measured
• Sun Maid Growers of California (2023)
  1 contaminants measured
• Riverbend Mobile Home & Rv Park (2024)
  1 contaminants measured
• Caruthers Raisin Packing Co (2023)
  1 contaminants measured
• Foothill Elementary School (2025)
  1 contaminants measured
• Tessenderlo Kerley Inc (2023)
  1 contaminants measured
• Three Crowns Association (2023)
  1 contaminants measured
• Usda Agricultural Research Service (2025)
  1 contaminants measured
• Lone Star Dehydrator (2025)
  1 contaminants measured
• Campos Bros. Farms (2024)
  1 contaminants measured
• Murrieta/hernandez Farms (2025)
  1 contaminants measured
• Baker Commodities Inc. (2025)
  1 contaminants measured
• H and R Facilities (2024)
  1 contaminants measured
• Pappas & Co (mendota) (2025)
  1 contaminants measured
• Bakman Water Company (2025)
  1 contaminants measured
• Laton Community Services District (2024)
  1 contaminants measured
• City of Orange Cove (2024)
  1 contaminants measured
• City of Parlier (2024)
  1 contaminants measured
• City of Sanger (2025)
  1 contaminants measured
• Tranquillity Irrigation District (2025)
  1 contaminants measured
• Shaver Lake Heights Mwc (2023)
  1 contaminants measured
• Willow Creek Christian School (2024)
  1 contaminants measured
• Orland Estates Mobile H.p. (2025)
  1 contaminants measured
• Whitethorn Elementary School (2025)
  1 contaminants measured
• Myers Flat M.w.s. Inc. (2023)
  1 contaminants measured
• Phillipsville C.s.d. (2024)
  1 contaminants measured
• Mill Creek M.w.c. (2025)
  1 contaminants measured
• Orleans Mutual Water Company (2025)
  1 contaminants measured
• Cuddeback Grammar School (2024)
  1 contaminants measured
• Mattole Elementary School (2025)
  1 contaminants measured
• Orleans C.s.d. (2025)
  1 contaminants measured
• Bridgeville Elem. School (2024)
  1 contaminants measured
• Palomino Estates Water Company (2023)
  1 contaminants measured
• Palmer Creek Csd (2024)
  1 contaminants measured
• Scotia Csd (2023)
  1 contaminants measured
• Willow Creek C.s.d. (2020)
  1 contaminants measured
• Hydesville Co. W.d. (2024)
  1 contaminants measured
• Cal Fire-eel River Conservation Camp (2023)
  1 contaminants measured
• Cal Fire-high Rock Conservation Camp (2023)
  1 contaminants measured
• Winterhaven County Water District (2021)
  1 contaminants measured
• Ocotillo Mutual Water Co (2023)
  1 contaminants measured
• Coyote Valley Mutual Water Co (2023)
  1 contaminants measured
• U.s. Gypsum Co (2020)
  1 contaminants measured
• Country Life Mh & Rv Park (2024)
  1 contaminants measured
• Uc Desert Research and Extension Center (2023)
  1 contaminants measured
• Valley Mobile Home Park (2022)
  1 contaminants measured
• Date Gardens Mobile Home Park (2022)
  1 contaminants measured
• Palo Verde County Water Dist. (2021)
  1 contaminants measured
• Rio Bend Rv Golf Resort & Storm Crossing (2022)
  1 contaminants measured
• Sunbeam Lake Rv Resort (2025)
  1 contaminants measured
• Mesquite Mines Inc. (2024)
  1 contaminants measured
• Spreckels Sugar Company (2020)
  1 contaminants measured
• Iid North End Consolidation (2020)
  1 contaminants measured
• Bornt 1992 Irrevocable Trust (2024)
  1 contaminants measured
• Allied Waste of Imperial Valley (2019)
  1 contaminants measured
• La Valle Sabbia Inc. (2022)
  1 contaminants measured
• Brandt Cattle (2021)
  1 contaminants measured
• Haykingdom, Inc. (2023)
  1 contaminants measured
• Imperial, City of (2025)
  1 contaminants measured
• Seeley Cwd (2024)
  1 contaminants measured
• Gsa Calexico Port of Entry (2024)
  1 contaminants measured
• Charles Brown Water Company (2025)
  1 contaminants measured
• Rolling Green Utilities, Inc. (2024)
  1 contaminants measured
• Eastern Sierra Regional Airport (2023)
  1 contaminants measured
• Meadow Lake Apartments (2023)
  1 contaminants measured
• Inyo County Pwd - Laws Town (2025)
  1 contaminants measured
• Highland Mobile Home Park (2022)
  1 contaminants measured
• Inyo County Pwd - Independence (2025)
  1 contaminants measured
• Inyo County Pwd - Lone Pine (2025)
  1 contaminants measured
• Cdf - Owens Valley Conservation Camp (2023)
  1 contaminants measured
• Kern Valley Mutual Water Company (2022)
  1 contaminants measured
• Rancho Seco Inc. Water System (2023)
  1 contaminants measured
• Sierra Bella Mutual Water Company (2025)
  1 contaminants measured
• Mettler County Water District (2025)
  1 contaminants measured
• Tradewind Water Assoc. (2023)
  1 contaminants measured
• Lands of Promise Mwc (2025)
  1 contaminants measured
• Canyon Meadows Mutual Water (2023)
  1 contaminants measured
• Riverdale Village (2025)
  1 contaminants measured
• Oak Knolls Mutual Water Company (2025)
  1 contaminants measured
• El Adobe Poa, Inc. (2024)
  1 contaminants measured
• Wilson Road Water Community (2024)
  1 contaminants measured
• Stoco Mutual Water Company (2025)
  1 contaminants measured
• Manon Manor Mutual Water Company (2025)
  1 contaminants measured
• Oasis Property Owners Association (2025)
  1 contaminants measured
• Son Shine Properties (2025)
  1 contaminants measured
• Clark Street Community Well (2024)
  1 contaminants measured
• Pond School Water System (2023)
  1 contaminants measured
• Cypress Canyon Water System (2024)
  1 contaminants measured
• Wegis Mutual Water Company (2024)
  1 contaminants measured
• East Wilson Road Water Company (2023)
  1 contaminants measured
• Gcg Water System (2024)
  1 contaminants measured
• Golden Empire Concrete Company (2023)
  1 contaminants measured
• Arvin Community Services Dist (2025)
  1 contaminants measured
• Rand Communities Water District (2025)
  1 contaminants measured
• Tehachapi, City of (2025)
  1 contaminants measured
• Inyokern Csd (2025)
  1 contaminants measured
• Bear Valley Csd (2023)
  1 contaminants measured
• Pinon Pines Mwc (2024)
  1 contaminants measured
• Hardwick Water Company (2024)
  1 contaminants measured
• Avenal, City of (2025)
  1 contaminants measured
• Kettleman City Csd (2023)
  1 contaminants measured
• Harbin Hot Springs (2024)
  1 contaminants measured
• Loch Lomond Mutual Water Co (2025)
  1 contaminants measured
• Blue Lakes Improvement Club (2025)
  1 contaminants measured
• Twin Creeks Mobile and Rv Village (2023)
  1 contaminants measured
• Blue Lakes Mobile Home Park (2024)
  1 contaminants measured
• Bella Lago Mobile Home Park (2025)
  1 contaminants measured
• Pier 1900 Homeowner's Association (2024)
  1 contaminants measured
• Cobb Area County Water District (2024)
  1 contaminants measured
• Callayomi County Water District (2025)
  1 contaminants measured
• Little Valley Csd (2025)
  1 contaminants measured
• Pineview Mobile Home Park (2023)
  1 contaminants measured
• Lnf-eagle Lake Ranger Station (2025)
  1 contaminants measured
• Johnstonville Water System (2025)
  1 contaminants measured
• Blue Skies Trailor Park (2024)
  1 contaminants measured
• Saint Andrews Abbey (2023)
  1 contaminants measured
• Los Angeles Residential Community Founda (2025)
  1 contaminants measured
• The Painted Turtle Camp (2024)
  1 contaminants measured
• Del Rio Mutual (2025)
  1 contaminants measured
• Little Baldy Water (2024)
  1 contaminants measured
• Llano Mutual Water Company (2024)
  1 contaminants measured
• The Village Mobile Home Park (2025)
  1 contaminants measured
• The River Community (2025)
  1 contaminants measured
• Golden Sands Mobile Home Park (2025)
  1 contaminants measured
• Ilead Agua Dulce Charter School (2025)
  1 contaminants measured
• Eastside Union School District (2025)
  1 contaminants measured
• Colorado Mutual Water Company (2025)
  1 contaminants measured
• Rivers End Trailer Park (2025)
  1 contaminants measured
• Hughes-elizabeth Lake Unified School Dis (2025)
  1 contaminants measured
• Alpine Springs Mobile Home Park (2024)
  1 contaminants measured
• North Trails Mutual Water Company (2024)
  1 contaminants measured
• Calif State Polytechnical Univ - Pomona (2025)
  1 contaminants measured
• Hemlock Mutual Water Co. (2023)
  1 contaminants measured
• Monterey Park-city, Water Dept. (2024)
  1 contaminants measured
• Sterling Mutual Water Company (2025)
  1 contaminants measured
• Green Valley Cwd (2025)
  1 contaminants measured
• Fenner Canyon Youth Conservation Camp (2025)
  1 contaminants measured
• Bass Lake Heights Mutual Water (2025)
  1 contaminants measured
• Sierra Linda Mutual Water Co (2025)
  1 contaminants measured
• East Acres Mutual Water Company (2024)
  1 contaminants measured
• Broadview Terrace Mutual Water Company (2025)
  1 contaminants measured
• Pike Ranch Mutual Water Co (2024)
  1 contaminants measured
• Sugar Pine Homeowners Assoc (2025)
  1 contaminants measured
• Cedar Valley Mutual Water Co (2025)
  1 contaminants measured
• Coarsegold Market (2024)
  1 contaminants measured
• Mammoth Pool Mobile Home Park (2023)
  1 contaminants measured
• Two Twenty Four Mobile Home Pk (2025)
  1 contaminants measured
• Wildwood Mobile Home Pk Inc (2025)
  1 contaminants measured
• North Fork Elementary School (2023)
  1 contaminants measured
• John Hovannisian Water System (2024)
  1 contaminants measured
• Kidz Can 2 (2023)
  1 contaminants measured
• Bakman Water-rolling Hills (2022)
  1 contaminants measured
• Tomales High School (2023)
  1 contaminants measured
• Green Gulch Farm (2023)
  1 contaminants measured
• Mariposa Pines Mutual (2024)
  1 contaminants measured
• Tavis Corporation (2025)
  1 contaminants measured
• Yosemite Terrace Estates (2023)
  1 contaminants measured
• Elk County Water District (2023)
  1 contaminants measured
• Branscomb Mobile Home Park (2025)
  1 contaminants measured
• Creekside Cabins & Rv Resort (2022)
  1 contaminants measured
• City of 10,000 Buddhas (2024)
  1 contaminants measured
• Potter Valley School District (2025)
  1 contaminants measured
• Yokayo Tribe of Indians (2025)
  1 contaminants measured
• Whale Gulch School (2023)
  1 contaminants measured
• Fort Bragg, City of (2024)
  1 contaminants measured
• Rogina Water Company Inc. (2024)
  1 contaminants measured
• Irish Beach Water District (2023)
  1 contaminants measured
• Planada Elementaryschool (2025)
  1 contaminants measured
• Country Club County Wd (2024)
  1 contaminants measured
• Volta Community Sd (2023)
  1 contaminants measured
• City of Gustine (2025)
  1 contaminants measured
• City of Livingston (2025)
  1 contaminants measured
• Winton Water & Sanitary Dist (2025)
  1 contaminants measured
• Le Grand Comm Services Dist (2025)
  1 contaminants measured
• Castle Airport (2023)
  1 contaminants measured
• California Pines C.s.d. (2023)
  1 contaminants measured
• Newell County Water District (2025)
  1 contaminants measured
• City of Alturas (2025)
  1 contaminants measured
• Lower Rock Creek Mutual Water Co. (2020)
  1 contaminants measured
• Crowley Lake Trailer Park (2024)
  1 contaminants measured
• Sierra East Hoa (2025)
  1 contaminants measured
• June Lake Pud Village (2024)
  1 contaminants measured
• Bridgeport Pud (2025)
  1 contaminants measured
• June Lake Pud - Down Canyon (2024)
  1 contaminants measured
• Pacific Reserve Nursery Ws (2024)
  1 contaminants measured
• Assisi Mwc (2025)
  1 contaminants measured
• Oak Manor Ws (2025)
  1 contaminants measured
• Glenn Ave Ws #01 (2023)
  1 contaminants measured
• Hidden Valley Wa (2020)
  1 contaminants measured
• Leafwood Community Wa (2024)
  1 contaminants measured
• Moro Cojo Mwa (2023)
  1 contaminants measured
• Murphy Hill Ws #01 (2023)
  1 contaminants measured
• Murphy Hill Ws #02 (2024)
  1 contaminants measured
• Paradise Rd Ws #09 (2025)
  1 contaminants measured
• Garlen Court Ws (2023)
  1 contaminants measured
• Pesante Rd Ws #06 (2024)
  1 contaminants measured
• Calvary Church Inc Ws (2023)
  1 contaminants measured
• San Ardo Wd (2025)
  1 contaminants measured
• San Miguel Ws #01 (2024)
  1 contaminants measured
• Spring Canyon Wa (2023)
  1 contaminants measured
• Pajaro Valley Greenhouse Ws (2024)
  1 contaminants measured
• Bud Antle, Llc- Marina Facility Ws (2025)
  1 contaminants measured
• Apple Ave Ws #02 (2025)
  1 contaminants measured
• River Rd Ws #25 (2025)
  1 contaminants measured
• Growers Transplanting Ws (2023)
  1 contaminants measured
• Encinal Rd Ws #01 (2024)
  1 contaminants measured
• Harbor View Wa (2023)
  1 contaminants measured
• Pond-derosa Oaks Wc (2023)
  1 contaminants measured
• Sunny Acres Mws (2024)
  1 contaminants measured
• Paradise Rd Ws #21 (2025)
  1 contaminants measured
• Brandon Creek Mws (2024)
  1 contaminants measured
• Corda Rd Ws (2022)
  1 contaminants measured
• Meridian Rd Ws #09 (2023)
  1 contaminants measured
• Natividad Rd Ws #02 (2023)
  1 contaminants measured
• Tierra Vista Mwc (2025)
  1 contaminants measured
• Laguna Seca Recreation Ws (2025)
  1 contaminants measured
• Vierra Knolls Mwc (2023)
  1 contaminants measured
• San Miguel Ws #22 (2024)
  1 contaminants measured
• Foothill Wa (2024)
  1 contaminants measured
• Pacific Valley School Ws (2024)
  1 contaminants measured
• Deetjen's Big Sur Inn Ws (2024)
  1 contaminants measured
• Monterey Bay Nursery Ws (2025)
  1 contaminants measured
• Countryside Estates Mwc (2025)
  1 contaminants measured
• El Camino Wc Inc (2023)
  1 contaminants measured
• Growers Service Assn Ws (ice) (2025)
  1 contaminants measured
• Arroyo Seco Estates Mws (2024)
  1 contaminants measured
• Mccahon Floral Ws (2023)
  1 contaminants measured
• Op Murphy & Sons Ws (2025)
  1 contaminants measured
• Williams - Rc Farms Ws (2025)
  1 contaminants measured
• Little Bear Water Company (2023)
  1 contaminants measured
• Somerston Winery (2023)
  1 contaminants measured
• Darioush Winery (2025)
  1 contaminants measured
• Castello Di Amorosa (2025)
  1 contaminants measured
• Laird Family Estate (2025)
  1 contaminants measured
• La Tierra Heights Mutual (2024)
  1 contaminants measured
• Napa River Ranch (2024)
  1 contaminants measured
• Capell Valley Estates (2025)
  1 contaminants measured
• Oakville Grocery Co. (2024)
  1 contaminants measured
• Napa Valley Country Club (2025)
  1 contaminants measured
• R Ranch at the Lake (2025)
  1 contaminants measured
• Wine Country Inn (2024)
  1 contaminants measured
• Domaine Chandon (2025)
  1 contaminants measured
• Howell Mountain School (2024)
  1 contaminants measured
• Hess Winery (2025)
  1 contaminants measured
• Peju Province (2024)
  1 contaminants measured
• Raymond Vineyard & Cellar (2025)
  1 contaminants measured
• Sequoia Grove Vineyards (2024)
  1 contaminants measured
• Silver Oak Wine Cellars (2025)
  1 contaminants measured
• Milton Road Water Company (2025)
  1 contaminants measured
• Rutherford Hill Winery (2025)
  1 contaminants measured
• V. Sattui Winery (2025)
  1 contaminants measured
• Veterans Home of California (2025)
  1 contaminants measured
• Berryessa Pines Water System (2025)
  1 contaminants measured
• Spanish Flat Water District (2025)
  1 contaminants measured
• Floriston Water System (2024)
  1 contaminants measured
• Sierra Estates Mutual Water Company (2024)
  1 contaminants measured
• Ncsos, Mccourtney Rd. (2025)
  1 contaminants measured
• Hynes Estates Mutual Water Co. (2025)
  1 contaminants measured
• Los Alamitos Race Course (2024)
  1 contaminants measured
• Baker Ranch Water Corp (2024)
  1 contaminants measured
• Live Oak Waldorf School (2025)
  1 contaminants measured
• Senior Care Villa Water (2024)
  1 contaminants measured
• Veterinary Development Company (2023)
  1 contaminants measured
• Agate Bay Water Company (2024)
  1 contaminants measured
• Frccsd Old Mill Ranch (2024)
  1 contaminants measured
• Blairsden Water Users Assn (2023)
  1 contaminants measured
• Meadow Edge Mhp (2024)
  1 contaminants measured
• Sierra Pacific Industries Quincy (2023)
  1 contaminants measured
• Feather River Rv & Mhp (2024)
  1 contaminants measured
• Frccsd Hot Springs (2024)
  1 contaminants measured
• Valivu Estates Mhp (2024)
  1 contaminants measured
• Clio Public Utility District (2024)
  1 contaminants measured
• Gold Mountain Csd (2024)
  1 contaminants measured
• Grizzly Creek Ranch Snj (2023)
  1 contaminants measured
• Lake Almanor Country Club Mwc (2023)
  1 contaminants measured
• Stone Creek Water Company (2020)
  1 contaminants measured
• Carver Tract Mutual Water Comp (2023)
  1 contaminants measured
• Doug Jones Water (2021)
  1 contaminants measured
• Anza Mutual Water Company (2025)
  1 contaminants measured
• Desert View Trailer Park (2025)
  1 contaminants measured
• Fisherman's Retreat (2022)
  1 contaminants measured
• Glen Ivy Hot Springs (2020)
  1 contaminants measured
• White's Steel, Inc. (2021)
  1 contaminants measured
• Oasis Date Gardens (2025)
  1 contaminants measured
• Jojoba Hills Skp Resort, Inc. (2025)
  1 contaminants measured
• Desert Dunes Golf Club Ltd (2021)
  1 contaminants measured
• Ortega Oaks Rv Park&campground (2024)
  1 contaminants measured
• Pinyon Crest Hoa (2024)
  1 contaminants measured
• Ramona Water Company (2022)
  1 contaminants measured
• Csa 62 (2021)
  1 contaminants measured
• Thomas Mountain Water Company (2023)
  1 contaminants measured
• Valley View Trailer Park (2025)
  1 contaminants measured
• Bagdasarian Packing Thermal, Llc (2023)
  1 contaminants measured
• Jewel Date Co. Inc. (2023)
  1 contaminants measured
• Madison Center Water System (2024)
  1 contaminants measured
• Amezcua - Garcia Water (2024)
  1 contaminants measured
• Thermal Park (2024)
  1 contaminants measured
• Mecca Arco Travel Center (2024)
  1 contaminants measured
• Grimmway Farms Coachella Valley Facility (2023)
  1 contaminants measured
• Hood Water Maintence Dist [sws] (2024)
  1 contaminants measured
• B & W Resort Marina (2024)
  1 contaminants measured
• East Walnut Grove [sws] (2025)
  1 contaminants measured
• Rancho Marina (2021)
  1 contaminants measured
• Southwest Tract W M D [sws] (2019)
  1 contaminants measured
• Northgate 880 [sws] (2025)
  1 contaminants measured
• Branch Center [sws] (2025)
  1 contaminants measured
• Rio Cosumnes Correctional Center [sws] (2025)
  1 contaminants measured
• Bates Elementary School (2025)
  1 contaminants measured
• Walnut Grove Elementary School (2025)
  1 contaminants measured
• Wilton Bible Church (2025)
  1 contaminants measured
• Kiefer Landfill [sws] (2025)
  1 contaminants measured
• Jean Harvie School [sws] (2025)
  1 contaminants measured
• Delta Shores Resort (2025)
  1 contaminants measured
• Metro Air Park Water System (2025)
  1 contaminants measured
• Scwa - Arden Park Vista (2025)
  1 contaminants measured
• Scwa - Laguna/vineyard (2025)
  1 contaminants measured
• Folsom State Prison (2024)
  1 contaminants measured
• Scwa Mather-sunrise (2024)
  1 contaminants measured
• San Justo Mutual Water Company (2025)
  1 contaminants measured
• Mission Farm R.v. Park (2024)
  1 contaminants measured
• Mcalpine Lake & Park (2025)
  1 contaminants measured
• Rancho San Joaquin Mwc (2024)
  1 contaminants measured
• Betabel Rv Resort (2025)
  1 contaminants measured
• Paicines Ranch (2024)
  1 contaminants measured
• San Juan Bautista, City of (2025)
  1 contaminants measured
• Apple Valley Foothill Cwd (2025)
  1 contaminants measured
• Apple Valley Heights Cwd (2025)
  1 contaminants measured
• Bar-len Mwc (2024)
  1 contaminants measured
• Bar H Mwc (2021)
  1 contaminants measured
• Chamisal Mwc (2024)
  1 contaminants measured
• Forest Park Mwc (2024)
  1 contaminants measured
• Hi Desert Mwc (2024)
  1 contaminants measured
• Mp Mine Operations Llc (2024)
  1 contaminants measured
• Juniper Riviera Cwd (2025)
  1 contaminants measured
• Gordon Acres Water Co (2021)
  1 contaminants measured
• Brookside Mhp (2025)
  1 contaminants measured
• Lytle Creek Administration Site (2025)
  1 contaminants measured
• Knoll Enterprises (2024)
  1 contaminants measured
• Snow Summit (2025)
  1 contaminants measured
• Lake Jodie Water System (2025)
  1 contaminants measured
• Calico Lake Homeowners (2025)
  1 contaminants measured
• Barton Flats Water System (2025)
  1 contaminants measured
• Rancho Pino Verde (2025)
  1 contaminants measured
• Big Bear Administration (2018)
  1 contaminants measured
• El Mirage School (2023)
  1 contaminants measured
• Glen Martin Mwc (2025)
  1 contaminants measured
• Fallsvale Service Company (2025)
  1 contaminants measured
• Valley View Park Mwc (2024)
  1 contaminants measured
• Caltrans - Mountain Pass Jpoe Cvef (2022)
  1 contaminants measured
• California Institution for Men (2025)
  1 contaminants measured
• Diamond Jack's Rv Ranch (2023)
  1 contaminants measured
• Julian Community Services District (2024)
  1 contaminants measured
• Lake Morena's Oak Shores Mwc (2024)
  1 contaminants measured
• Pauma Valley Water Company (2024)
  1 contaminants measured
• Butterfield Ranch (2024)
  1 contaminants measured
• Willowside Terrace Water Association (2024)
  1 contaminants measured
• Majestic Pines Community Sd (2023)
  1 contaminants measured
• Dhs Border Patrol I-8 Checkpoint (2025)
  1 contaminants measured
• Dhs Border Patrol Hwy 94 Checkpoint (2025)
  1 contaminants measured
• Pine Hill Egg Ranch (2024)
  1 contaminants measured
• Harney Lane Migrant Center Ws (2021)
  1 contaminants measured
• A1 Winstons Mobile Home Park (2024)
  1 contaminants measured
• Glenwood Mobile Home Park (2025)
  1 contaminants measured
• Mokelumne Mobile Senior Park (2024)
  1 contaminants measured
• Cardoza Villa Corp (2024)
  1 contaminants measured
• La Torres Park (2025)
  1 contaminants measured
• Alpine Meats Inc (2024)
  1 contaminants measured
• Pacific Bell Ue17l Water System (2021)
  1 contaminants measured
• Jefferson Esd-jefferson School (2025)
  1 contaminants measured
• Plug Connection Lodi (2025)
  1 contaminants measured
• Carmelo Industrial Park (2019)
  1 contaminants measured
• Glassfab Tempering Services Inc. (2023)
  1 contaminants measured
• Western Pallet Supply & Logistics (2023)
  1 contaminants measured
• Dynatect Ro-lab, Inc. (2025)
  1 contaminants measured
• Larsen Ranch 39-40/water System (2025)
  1 contaminants measured
• Valley Landscaping & Maint Inc (2024)
  1 contaminants measured
• Burlington Northern Santa Fe (2024)
  1 contaminants measured
• Valpico Industrial Park (2025)
  1 contaminants measured
• Mclaughlin Waste Equipment Inc (2024)
  1 contaminants measured
• Durham Ferry Community School (2024)
  1 contaminants measured
• Tarditi Rentals Water (2024)
  1 contaminants measured
• Central Valley Baptist Church Ws (2025)
  1 contaminants measured
• Halcyon Water System (2017)
  1 contaminants measured
• Green River Mutual Water Co. (2024)
  1 contaminants measured
• Higuera Apartments (2021)
  1 contaminants measured
• Cuyama Lane Water Company (2024)
  1 contaminants measured
• Mutual Water Association (2024)
  1 contaminants measured
• Elks Lodge #322 (2024)
  1 contaminants measured
• Sycamore Mineral Springs Resort (2024)
  1 contaminants measured
• Madonna Inn Water Company (2024)
  1 contaminants measured
• Skylawn Memorial Park (skylawn Inc) (2023)
  1 contaminants measured
• Puente Housing Solutions (2025)
  1 contaminants measured
• Los Prietos Boy's Camp (2025)
  1 contaminants measured
• Lingate Lane Mutual Water Company (2024)
  1 contaminants measured
• Moreton Bay Professional Plaza (2024)
  1 contaminants measured
• Ellwood Mutual Water Company (2024)
  1 contaminants measured
• El Capitan Mutual Water Company (2025)
  1 contaminants measured
• Sable Offshore Corp Las Flores Canyon (2024)
  1 contaminants measured
• Saint Marie Mobile Home Park (2022)
  1 contaminants measured
• Rolling Hills Mutual Water Company (2019)
  1 contaminants measured
• Cuyama Elementary School (2024)
  1 contaminants measured
• Raineri Mutual Water Company (2024)
  1 contaminants measured
• Kennon Water Company (2025)
  1 contaminants measured
• Lake Canyon Mutual Water Company (2025)
  1 contaminants measured
• Roseview Heights Mutual Water Company (2024)
  1 contaminants measured
• Green Acres Mutual Water (2025)
  1 contaminants measured
• Casa De Fruta Water System (2024)
  1 contaminants measured
• Los Ranchos De Uvas Water Company (2025)
  1 contaminants measured
• Lupin Lodge (2025)
  1 contaminants measured
• O'connor Hospital (2023)
  1 contaminants measured
• Monterey Mushrooms (2023)
  1 contaminants measured
• Reforestation Technologies International (2024)
  1 contaminants measured
• Brush and Old Well Mutual Water Company (2025)
  1 contaminants measured
• Lakeview Apartments (2025)
  1 contaminants measured
• Big Redwood Park Water (2024)
  1 contaminants measured
• Laurel Community League (2025)
  1 contaminants measured
• R a Farms (2024)
  1 contaminants measured
• Fern Grove Water Club (2025)
  1 contaminants measured
• Bracken Brae Country Club (2024)
  1 contaminants measured
• Jarvis Mutual Water System (2024)
  1 contaminants measured
• Summit West Mutual Water Co. (2025)
  1 contaminants measured
• Ridge Mutual Water Company (2022)
  1 contaminants measured
• Santa Cruz County Fairgrounds (2025)
  1 contaminants measured
• Aptos High School (2025)
  1 contaminants measured
• Mountain Elementary School (2020)
  1 contaminants measured
• Alianza Charter School/wcsa (2025)
  1 contaminants measured
• Renaissance High School (2025)
  1 contaminants measured
• Rountree Facility(prev. Sheriff's Rehab) (2024)
  1 contaminants measured
• Lockheed Martin Space Systems (2025)
  1 contaminants measured
• The Willows Resort (2025)
  1 contaminants measured
• Kitayama Brothers (2025)
  1 contaminants measured
• Mt. Hermon Association, Inc. (2023)
  1 contaminants measured
• Mel Mar Mutual Water Co (2025)
  1 contaminants measured
• Shasta Csa - Sugarloaf, #2 (2023)
  1 contaminants measured
• Lakeside Woods Mutual Water Co (2025)
  1 contaminants measured
• Shasta Csa - Castella, #3 (2024)
  1 contaminants measured
• Lakehead Subd Mutual Water Co (2025)
  1 contaminants measured
• Big Springs Mutual Water System (2025)
  1 contaminants measured
• Shasta Csa - Cragview, #23 (2024)
  1 contaminants measured
• Coleman National Fish Hatchery (2025)
  1 contaminants measured
• Anderson Union High School (2023)
  1 contaminants measured
• Lone Tree Mobile Home Park (2025)
  1 contaminants measured
• Lazy Landing Mobile Home Park (2023)
  1 contaminants measured
• Pine Ridge Park Estates (2023)
  1 contaminants measured
• Lake Shasta Pines Rv Park & Campground (2025)
  1 contaminants measured
• Big Rise Village (2024)
  1 contaminants measured
• Rio Vista Mobilehome Estates (2023)
  1 contaminants measured
• Junction School District (2025)
  1 contaminants measured
• Montgomery Creek School (2024)
  1 contaminants measured
• Millville Elementary School (2024)
  1 contaminants measured
• Whitmore Union Elem School (2024)
  1 contaminants measured
• Black Butte Elementary School (2025)
  1 contaminants measured
• Village Green (2023)
  1 contaminants measured
• Rapid River Mobilehome Park (2023)
  1 contaminants measured
• Clear Creek Market (2025)
  1 contaminants measured
• Lassen Pines Mutual Water Co Inc (2025)
  1 contaminants measured
• Sun Oaks Racquet Club (2024)
  1 contaminants measured
• Creekside Mobilehome Park (2025)
  1 contaminants measured
• Woodridge Mutual Water Co (2024)
  1 contaminants measured
• El Rio Estates (2024)
  1 contaminants measured
• West Cottonwood Apartments (2023)
  1 contaminants measured
• Tucker Oaks East Water District (2023)
  1 contaminants measured
• Shasta Co Csa # 8 Palo Cedro (2024)
  1 contaminants measured
• Shasta Co Csa # 13 Alpine Meadows (2024)
  1 contaminants measured
• Shasta Csa - French Gulch, #11 (2024)
  1 contaminants measured
• Black Butte Junior High School (2024)
  1 contaminants measured
• Juan Mean Burrito Water System (2025)
  1 contaminants measured
• Airport Planet Water (2024)
  1 contaminants measured
• City of Anderson (2025)
  1 contaminants measured
• Mountain Gate C.s.d. (2024)
  1 contaminants measured
• Shasta Csa - Jones Valley, #6 (2024)
  1 contaminants measured
• Whiskeytown Nra-headquarters (2023)
  1 contaminants measured
• Downieville Public U.d. (2024)
  1 contaminants measured
• Hornbrook C.s.d. (2024)
  1 contaminants measured
• Siskiyou Co.service Area #5/carrick (2023)
  1 contaminants measured
• Tennant C.s.d. (2020)
  1 contaminants measured
• Willow Creek School (2020)
  1 contaminants measured
• Big Springs Union Elem. School (2022)
  1 contaminants measured
• Shasta Cascade Mobilehome Park (2025)
  1 contaminants measured
• Oak Valley Acres P.o.a. (2018)
  1 contaminants measured
• Shastina Mobile Estates (2024)
  1 contaminants measured
• Dorris, City of (2022)
  1 contaminants measured
• Dunsmuir, City of (2025)
  1 contaminants measured
• Mccloud C.s.d. (2021)
  1 contaminants measured
• Montague, City of (2025)
  1 contaminants measured
• Mt. Shasta, City of (2024)
  1 contaminants measured
• Tulelake, City of (2025)
  1 contaminants measured
• Yreka, City of (2025)
  1 contaminants measured
• Happy Camp C.s.d. (2025)
  1 contaminants measured
• Lake Shastina C.s.d (2023)
  1 contaminants measured
• Hidden Acres Trailer Villa (2024)
  1 contaminants measured
• Rockwell Collins Inc. (fka Upco-utas) (2020)
  1 contaminants measured
• Dixon Migrant Center (2025)
  1 contaminants measured
• Sid - Gibson Canyon (2024)
  1 contaminants measured
• Cazadero Water Company, Inc. (puc) (2025)
  1 contaminants measured
• South Cloverdale Water Company (2025)
  1 contaminants measured
• Branger Mutual Water Company, Inc. (2025)
  1 contaminants measured
• Kelly Mutual Water Company (2025)
  1 contaminants measured
• Diamond a Mutual Water Company (2023)
  1 contaminants measured
• Valley Ford Water Association (2024)
  1 contaminants measured
• Randal's Ranchette Mutual Water Company (2024)
  1 contaminants measured
• Rincon Valley Mobile Estates (2025)
  1 contaminants measured
• Six Acres Water Company (2023)
  1 contaminants measured
• Redwood Heights Mutual Water Company (2024)
  1 contaminants measured
• Northwest Prep Charter School (2024)
  1 contaminants measured
• Olivet Elementary School (2025)
  1 contaminants measured
• Oak Grove School (2024)
  1 contaminants measured
• Geyserville Newtech Academy School (2023)
  1 contaminants measured
• Gravenstein School District-gravenstein (2024)
  1 contaminants measured
• Gravenstein School District-hillcrest (2024)
  1 contaminants measured
• Mobile Home Estates (2025)
  1 contaminants measured
• Dunham School (2024)
  1 contaminants measured
• Plaza Mobile Home Park (2024)
  1 contaminants measured
• Western Mobile Home Park (2024)
  1 contaminants measured
• Sunset Park Community (2023)
  1 contaminants measured
• El Portal Mobile Estates (2024)
  1 contaminants measured
• Sonoma Ranch Mutual Water Company (2025)
  1 contaminants measured
• Francis Coppola Winery (2023)
  1 contaminants measured
• Mark West Meadows Mutual Water (2024)
  1 contaminants measured
• Virginia Dare Winery (2024)
  1 contaminants measured
• Presentation School (2024)
  1 contaminants measured
• George Ranch Mutual Water Company (2025)
  1 contaminants measured
• Andy's Produce Market, Inc. (2023)
  1 contaminants measured
• Seneca Family of Agencies (2023)
  1 contaminants measured
• Willowside School (2025)
  1 contaminants measured
• Salmon Creek Middle School (2024)
  1 contaminants measured
• Ferrari-carano Winery (2025)
  1 contaminants measured
• Sonoma County Pub Works-central Landfill (2025)
  1 contaminants measured
• Groskopf Warehouse & Logistics (2025)
  1 contaminants measured
• S & W Warehousing, Llc (2025)
  1 contaminants measured
• Buckley Family Partnership (2024)
  1 contaminants measured
• Laura Chenel's Chevre Inc. (2025)
  1 contaminants measured
• James Court Water System (2025)
  1 contaminants measured
• Mayacamas Warehouse, Llc (2025)
  1 contaminants measured
• Sea Ranch Water Company,the (puc) (2025)
  1 contaminants measured
• U.s. Coast Guard Training Center (2024)
  1 contaminants measured
• Crows Landing Comm Svc District (2025)
  1 contaminants measured
• Sunrise Village Mhp (2024)
  1 contaminants measured
• Chatom School (eh) (2024)
  1 contaminants measured
• Lakewood Memorial Park & Funeral Home (2025)
  1 contaminants measured
• Sconza Candy Company (2025)
  1 contaminants measured
• Riverbank Lra (2023)
  1 contaminants measured
• Mountain View Elementary School (2024)
  1 contaminants measured
• Brethren Heritage School, Inc (2025)
  1 contaminants measured
• Wood Colony Christian School (2023)
  1 contaminants measured
• Westley Csd (2025)
  1 contaminants measured
• California Nut Company (2025)
  1 contaminants measured
• West Coast Sand & Gravel (2024)
  1 contaminants measured
• Grover Landscape Water System (2025)
  1 contaminants measured
• Mid Valley Nut Co (2023)
  1 contaminants measured