California — all systems

California water systems A–Z

Page 6 of 11 · Lake Canyon Mutual Water Company → Mesa Water District — Costa Mesa, Ca. Every public water system we track in California, alphabetically. Each links to the system's measured contaminant levels against federal limits.

• Lake Canyon Mutual Water Company (2025)
• Lake County Csa 13 - Kono Tayee (2024)
• Lake County Csa 2 - Spring Valley (2025)
• Lake County Csa 20 - Soda Bay (2023)
• Lake County Csa 21 - North Lakeport (2024)
• Lake Don Pedro Csd (2023)
• Lake Elementary School (2023)
• Lake Elizabeth Mutual Water Co. (2024)
• Lake Forest Mutual W.c. (2024)
• Lake Francis Mutual Water Company (2025)
• Lake Hemet MWD (2025)
• Lake Hemet Mwd-camp Ground (2024)
• Lake Hemet-garner Valley (2023)
• Lake Henshaw Resort Inc. (2025)
• Lake Isabella Community Services Dist (2024)
• Lake Jodie Water System (2025)
• Lake Madrone Water District (2019)
• Lake Morena Views Mwc (2025)
• Lake Morena's Oak Shores Mwc (2024)
• Lake of the Springs (2025)
• Lake of the Woods Mobile Village (2024)
• Lake of the Woods Mwc (2023)
• Lake San Antonio Mhp Ws (2025)
• Lake Shasta Pines Rv Park & Campground (2025)
• Lake Shastina C.s.d (2023)
• Lake Siskiyou M.w.c. (2024)
• Lake Success Mobile Lodge (2024)
• Lake View Mutual Water Co. (2023)
• Lake Wohlford Resort (2024)
• Lakehead Subd Mutual Water Co (2025)
• Lakeport, City of (2024)
• Lakeshore Heights Mutual Water (2024)
• Lakeshore Villa Mutual Water Co (2025)
• Lakeside Elementary School (2024)
• Lakeside Mobile Estates (2025)
• Lakeside Park Association (2024)
• Lakeside School (2024)
• Lakeside Sd-lakeside School (2019)
• Lakeside Wd (2025)
• Lakeside Woods Mutual Water Co (2025)
• Lakeview Apartments (2025)
• Lakeview Hills Community Assoc (2025)
• Lakeview Ranchos Mutual Water Company (2023)
• Lakewood - City, Water Dept. (2024)
• Lakewood Memorial Park & Funeral Home (2025)
• Lamanuzzi Pantaleo Cs Dehy (2025)
• Lamont Public Utility Dist (2025)
• Lanare Community Services Dist (2023)
• Lancaster Park Mobile Home Park (2024)
• Lancaster Water Company (2025)
• Land of Medicine Buddha (2019)
• Land Projects Mutual Water Co. (2024)
• Landale Mutual Water Company (2025)
• Lander Veterinary Clinic (2024)
• Lands of Promise Mwc (2025)
• Larkin Woods Mutual Water Company (2025)
• Larry a Shehadey Dairy (2025)
• Larsen Ranch 39-40/water System (2025)
• Las Colinas Road & Water Assn (2023)
• Las Cumbres Mutual Water Co (2024)
• Las Deltas Mutual Water Company (2024)
• Las Flores Water Co. (2025)
• Las Flores Water Works (2025)
• Las Palmas Mobile Home Park (2025)
• Las Positas Mutual Water Company (2023)
• Las Ventanas Ranch (2025)
• Las Virgenes MWD (2024)
• Lassen Co. Off. of Education (2025)
• Lassen Community College Dist. (2024)
• Lassen County Water Works District #1 (2022)
• Lassen Mobile Home Park (2024)
• Lassen Pines Mutual Water Co Inc (2025)
• Lassen View Union Elementary School Dist (2024)
• Lassen View Water District (2025)
• Lassen Vnp - Headquarters (2025)
• Laton Community Services District (2024)
• Laton High School (2025)
• Latrobe Elementary School (2025)
• Laura Chenel's Chevre Inc. (2025)
• Laureate Water Company (2025)
• Laurel Community League (2025)
• Lawndale Mutual Water Company (2024)
• Lawrence Livermore National Lab Site 200 (2023)
• Lawrence Livermore National Lab-site 300 (2025)
• Lawson S Landing (2025)
• Laytonville County Water District (2025)
• Lazy B Mobilehome Park (2024)
• Lazy H Mutual Water Company (2023)
• Lazy Landing Mobile Home Park (2023)
• Lazy S Mobile Ranch (2024)
• Le Grand Comm Services Dist (2025)
• Leafwood Community Wa (2024)
• Learning Services Corp. (2023)
• Leavitt Lake Csd (2025)
• Lebec County Water District (2024)
• Lee Vining Public Utility District (2025)
• Legacy Packing and Cold Storage (2025)
• Leggett Valley School (2023)
• Leisure Acres Mutual Water Company (2023)
• Leisure Lake Mobile Estates (2025)
• Leisure Mobile Home Park (2024)
• Leisure Pines Mutual Water Co (2022)
• Lemon Cove Water Company (2025)
• Lemoore Naval Air Station — Lemoore, Ca (2023)
• Lemoore, City of (2025)
• Lerdo Sheriff S Facility — Bakersfield, Ca (2023)
• Lewiston Community Services District (2022)
• Lhoist North America Ws (2025)
• Liberty -yermo (2023)
• Liberty Elementary School (2023)
• Liberty Packing Company Llc (2022)
• Liberty Park Water Association — Huntington Beach, Ca (2023)
• Liberty School (2025)
• Liberty Utilities - Bellflower-norwalk (2025)
• Liberty Utilities - Compton — Downey, Ca (2023)
• Liberty Utilities - Lynwood (2025)
• Liberty Utilities - Mesa Crest (2025)
• Liberty Utilities (av Ranchos) Corp. (2025)
• Liberty-bellview Heights (2025)
• Libitzky (2024)
• Lichau Hylands Mutual Water Company (2025)
• Lick Observatory-ucsc (2024)
• Lieto Water System (reach Chartr School) (2025)
• Life Water Co-op (2024)
• Lili Valley Water Co. (2018)
• Lily of the Valley Mobile Village (2024)
• Limoneira Ranch #1 (2024)
• Lincoln Avenue Water Co. — Altadena, Ca (2022)
• Lincoln Chan-home Ranch (2022)
• Lincoln High School Farm (2024)
• Linda County Water District — Marysville, Ca (2022)
• Linda Falls Terrace Mutual (2023)
• Linda Vista (2023)
• Linda Vista Mutual Water Co (2024)
• Linden County Water District (2023)
• Linden Usd-chartville School (2025)
• Linden Usd-glenwood School (2023)
• Linden Usd-waterloo Elementary (2024)
• Lindsay, City of (2024)
• Lindy's Landing (2024)
• Lingate Lane Mutual Water Company (2024)
• Linnell Farm Labor Center (2023)
• Lion Raisins Packing Company (2022)
• Little Avenue Water System (2025)
• Little Baldy Water (2024)
• Little Bear Water Company (2023)
• Little Lake Mobile Home Park (2023)
• Little Potato Slough Mutual (2025)
• Little River Inn (2025)
• Little Valley Csd (2025)
• Littlerock Creek Irrigation Dist. (2025)
• Live Oak Acres Mwc Inc. (2025)
• Live Oak Child Care Center (2025)
• Live Oak Creek Mutual Water Company (2025)
• Live Oak Springs Water System (2025)
• Live Oak Waldorf School (2025)
• Llanas Camp Four Water System (2024)
• Llano Del Rio Water Company — Llano, Ca (2023)
• Llano Mutual Water Company (2024)
• Lmr Main Street Partners Llc (2025)
• Lnf-eagle Lake Ranger Station (2025)
• Loch Haven Mutual Water Company (2025)
• Loch Lomond Mutual Water Co (2025)
• Locke Water Works Co [sws] (2024)
• Lockeford Community Serv. Dist. (2024)
• Lockeford Mobile Home Park Wtr Sys (2023)
• Lockheed Martin Skunk Works (2024)
• Lockheed Martin Space Systems (2025)
• Lodi Homes (2024)
• Lodi Lake Mobile Home Park (2023)
• Lodi Usd-davis School (2024)
• Lodi Usd-houston School (2024)
• Lodi Usd-live Oak School (2024)
• Lodi Usd-turner Academy (2024)
• Lodi Usd-turner Academy at Tokay Colony (2025)
• Lodi Wine & Business Center (2025)
• Lodi, City of (2024)
• Loleta C.s.d. (2023)
• Loma Linda University (2025)
• Loma Linda, City of — Loma Linda, Ca (2023)
• Loma Mar Mutual (2025)
• Loma Prieta Jusd-loma Prieta School (2023)
• Loma Rica Water Company (2025)
• Lomas Del Sol Mws (2023)
• Lomita-city, Water Dept. — Lomita, Ca (2023)
• Lompoc-city Water Utility Div (2025)
• London Community Serv Dist (2024)
• Lone Pine Mhp (2024)
• Lone Pine Mutual Water Company (2024)
• Lone Star Dehydrator (2025)
• Lone Star School (2025)
• Lone Tree Mobile Home Park (2025)
• Long Barn Property Owners (2025)
• Long Beach (2024)
• Long Beach Utilities Department (2025)
• Long Canyon Water Company Corp. (2024)
• Long Valley Charter School (2024)
• Longview Mennonite School (2023)
• Lopez Project — San Luis Obispo, Ca (2023)
• Los Alamitos Race Course (2024)
• Los Alamos Community Services District (2025)
• Los Angeles Cwwd 21-kagel Canyon — Alhambra, Ca (2023)
• Los Angeles Cwwd 29 & 80-malibu — Alhambra, Ca (2023)
• Los Angeles Cwwd 36-val Verde — Alhambra, Ca (2023)
• Los Angeles Cwwd 37-acton — Alhambra, Ca (2023)
• Los Angeles Cwwd 40 Reg 4 & 34 Lancaster (2025)
• Los Angeles Cwwd 40, R 24,27,33-pearblsm — Alhambra, Ca (2023)
• Los Angeles Cwwd 40, Reg. 35-n.e. L.a. — Alhambra, Ca (2023)
• Los Angeles Cwwd 40, Reg. 38-lake La — Alhambra, Ca (2023)
• Los Angeles Cwwd 40, Reg. 39-rock Creek (2023)
• Los Angeles LADWP (2023)
• Los Angeles Residential Community Founda (2025)
• Los Angeles World Airports (2024)
• Los Angeles, City of - Castaic Pwr Plant (2023)
• Los Angeles, City of - Power Plant #1 (2024)
• Los Angeles, City of - Power Plant #2 (2024)
• Los Carneros Mwa (2023)
• Los Gatos (2025)
• Los Gatos Tomato Products (2024)
• Los Madrones Mwc (2023)
• Los Molinos Comm. Services Dist. (2024)
• Los Osos Community Services District — Los Osos, Ca (2023)
• Los Prietos Boy's Camp (2025)
• Los Prietos Complex (2025)
• Los Ranchos De Uvas Water Company (2025)
• Los Rios Rancho Water System (2025)
• Los Robles Mobile Home Estates (2024)
• Los Tules Mutual Water Company (2024)
• Lost Hills Utility District (2025)
• Lower Lake County Water District (2025)
• Lower Rock Creek Mutual Water Co. (2020)
• Lsid - Tonyville (2025)
• Lsid-strathmore System (2025)
• Lucerne Valley Elementary School (2024)
• Lucerne Valley High School (2024)
• Lucerne Valley Mwc (2024)
• Lucerne Vista Mwc (2024)
• Lucerne Water Co. - Cal Water Service (2023)
• Lukins Brothers Water Company (2025)
• Lundberg Family Farm (2025)
• Lundy Mutual Water Company (2024)
• Lupin Lodge (2025)
• Lynwood Park Mutual Water Co. (2023)
• Lynwood-city, Water Dept. (2024)
• Lytle Creek Administration Site (2025)
• Lytle Springs Wc (2024)
• M & L Cold Storage Water System (2025)
• M & L Office (2025)
• M.f. Mitchell & Company (2019)
• Mad River Compound - Usfs (2025)
• Madera Co Cmd19-parkwood (2025)
• Madera Co Md1-hidden Lake Estates (2025)
• Madera Co Md10a-madera Ranchos (2025)
• Madera Co Sa1-indian Lakes (2025)
• Madera Co Sa16 Sumner Hill (2025)
• Madera Co Sa3-parksdale (2025)
• Madera Community College (2023)
• Madera Irrigation District (2025)
• Madera Mh & Rv Park (2024)
• Madera Valley Water Company — Madera, Ca (2023)
• Madison Center Water System (2024)
• Madison Elementary School (2024)
• Madison Service Dist (2023)
• Madonna Inn Water Company (2024)
• Madrona Manor (2023)
• Madrone Mutual Water Company (2025)
• Magic Mountain Mutual Water Company (2023)
• Magnolia Mutual Water (2025)
• Magnolia Union School (2019)
• Maher Mutual Water Company (2023)
• Maher Rd Ws #05 (2023)
• Main Street Produce (2025)
• Majestic Pines Community Sd (2023)
• Majestic Townsgate Water System (2025)
• Malaga County Water District (2022)
• Mallo Gold Mine Plaza (2025)
• Mammoth Cwd (2023)
• Mammoth Mountain Ski Area - Outpost 14 (2019)
• Mammoth Pool Mobile Home Park (2023)
• Manchester Union Elementary School (2024)
• Manhattan Beach-city, Water Dept. (2025)
• Manila Community Services Dist. (2023)
• Manning Gardens Care Center Inc (2025)
• Manon Manor Mutual Water Company (2025)
• Manteca Industrial Prk Csa-30 (2024)
• Manteca, City of (2024)
• Manzana Products Company, Inc. (2023)
• Manzanita Elementary School (2024)
• Manzanita Hills Wa (2025)
• Mapache Trailer Park (2025)
• Mar Vista (2023)
• Marborg Industries (2023)
• Marchi Central Farm (2024)
• Marcum Illinois Elementary School (2024)
• Mariana Ranchos Cwd (2025)
• Mariani Nut Company - Buckeye Rd (2025)
• Mariani Packing Company, Inc. (2023)
• Marin French Cheese Co (2025)
• Marin Municipal Water District — Corte Madera, Ca (2021)
• Marina (2024)
• Marina Coast Water District (2025)
• Marina Landfill Ws (2023)
• Marina Mobile Manor (2025)
• Mariposa County Public Works Department (2021)
• Mariposa Pines Mutual (2024)
• Mariposa Public Utility Dist (2025)
• Mark West Acres Mwc (2025)
• Mark West Meadows Mutual Water (2024)
• Markleeville Water Co. (2024)
• Marko Zaninovich, Inc. - Pond Road (2023)
• Marquez Rental (2023)
• Martin Marietta Southern Calif Aggregate (2024)
• Martin's Mobile Home Court (2024)
• Martinez Apartments (2024)
• Mary Lou Mobile Home Park (2024)
• Marygold Mwc — Bloomington, Ca (2023)
• Matanzas Creek Winery (2025)
• Matsuda's By Green Acres, Llc (2025)
• Matsui Nursery Ws (2025)
• Mattole Elementary School (2025)
• Maurland Manor Water System (2024)
• Maxwell Public Utility District (2023)
• Mayacamas Warehouse, Llc (2025)
• Maywood Mobile Home Park (2022)
• Maywood Mutual Water Co. #1 (2024)
• Maywood Mutual Water Co. #2 (2025)
• Maywood Mutual Water Co. #3 (2025)
• Maze Blvd Mobilehome Park (2025)
• Mc Clellan Mhp (2025)
• Mcalpine Lake & Park (2025)
• Mccabe Union School (2021)
• Mccahon Floral Ws (2023)
• Mccloud C.s.d. (2021)
• Mcclure Boat Club, Inc. (2025)
• Mccourtney Road Transfer Station (2025)
• Mccoy Rd Ws #05 (2023)
• Mcevoy Ranch Water System (2025)
• Mcfarland, City of (2025)
• Mchenry Business Park (2025)
• Mckinleyville C.s.d. (2024)
• Mckinney Water District (2024)
• Mclaughlin Waste Equipment Inc (2024)
• Mcmahon Road Mutual Water Company (2024)
• Mcmanis Family Vineyards Inc. (2024)
• Mcpr- Woodland Park (2024)
• Mcswain Elementary School (2024)
• Mcusd - Mariposa Junior High School (2025)
• Mcusd - Sierra Foothill Charter School (2025)
• Mcusd - Woodland Elementary School (2023)
• Mcusd -coulterville-greeley Hill School (2024)
• Mcwane Plant and Industrial, Llc (2024)
• Md 05 Mountain Ranches (2025)
• Md 07 Marina View Heights (2023)
• Md 08 North Fork Water System (2023)
• Md 24 Teaford Meadow Lakes (2023)
• Md 28 Ripperdan Self Help (2025)
• Md 33 Fairmead (2025)
• Md 36 Eastin Arcola (2025)
• Md 37 La Vina (2025)
• Md 40 Sunset Ridge Estates (2023)
• Md 42 Still Meadow (2023)
• Md 43 Miami Creek Knolls (2023)
• Md 46 Ahwahnee Resorts (2023)
• Md 58 Sierra Highlands (2023)
• Md 60 Dillon Estates (2023)
• Md 63 Meadow Springs Ranch (2023)
• Md 73 Quartz Mountain (2023)
• Md 85 Valeta (2025)
• Md 95 Ranchos West (2025)
• Mdf-adin Ranger Station (2024)
• Meadow Edge Mhp (2024)
• Meadow Estates Mutual (2023)
• Meadow Lake Apartments (2023)
• Meadow Lakes Club (2024)
• Meadow Vista Cwd (2025)
• Meadowbrook Oaks (2024)
• Meadowcreek Mutual Water Company (2024)
• Meadowlark Ranches Mutual Water Company (2021)
• Meadowridge Mutual Water Co (2025)
• Meadows of the Kern Mutual Water Company (2023)
• Meadows Union Elementary School (2021)
• Mecca Arco Travel Center (2024)
• Mecchi Water Company (2023)
• Meiners Oaks Cwd (2023)
• Mel Mar Mutual Water Co (2025)
• Melita Heights Mutual Water Company (2024)
• Melody Woods Water Company (2025)
• Mendocino Hotel (2025)
• Mendocino School District- Mendocino (2025)
• Mendocino School District-albion School (2023)
• Mendota, City of (2024)
• Menlo Park Municipal Water (2024)
• Merced Adventist Church Water Sys. (2025)
• Merced New Life School (2025)
• Meridian Elementary School (2023)
• Meridian Rd Ws #09 (2023)
• Merquin Elementary School (2024)
• Merrill Gardens Iris Canyon Ws (2025)
• Merry Mountain Mutual (2023)
• Mesa Water District — Costa Mesa, Ca (2023)