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EWG's Tap Water Database — 2021 UPDATE

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Systems serving Los Angeles County, California

Utility name City People served
Sundale Mutual Water Company A, B Lancaster Population served: 1,100
Valhalla Water Association Tujunga Population served: 48
The River Community Azusa Population served: 63
El Rancho Mobile Home Park Santa Monica Population served: 216
Golden Sands Mobile Home Park Canyon Country Population served: 450
Fenner Canyon Youth Conservation Camp Valyermo Population served: 135
Desert Palms Mobile Home Park Lancaster Population served: 140
Casa Dulce Estates Agua Dulce Population served: 32
Terra Nova Mobile Home Park Visalia Population served: 120
Young-nak Presbyterian Church Los Angeles Population served: 2,015
Golden Valley Municipal Water District Gorman Population served: 1,030
Mitchell's Avenue E Mobile Home Park Lancaster Population served: 26
Antelope Park Mutual Water Company Lancaster Population served: 1,500
Colorado Mutual Water Company Lancaster Population served: 30
El Dorado Mutual Water Company Palmdale Population served: 648
Evergreen Mutual Water Company Lancaster Population served: 99
Lancaster Water Company Lancaster Population served: 66
Landale Mutual Water Company Lancaster Population served: 500
Clear Skies Mobile Home Ranch Lancaster Population served: 75
Californian Mobile Home Park Lancaster Population served: 217
Llano Del Rio Water Company Llano Population served: 264
Rivers End Trailer Park Canyon Country Population served: 25
Fire Suppression Camp 19 Azusa Population served: 132
Sleepy Valley Water Company Saugus Population served: 100
Sherwood Mobile Home Park Lancaster Population served: 740
Lily Of The Valley Mobile Village Saugus Population served: 600
Aqua J. Mutual Water Company Lancaster Population served: 100
Alpine Springs Mobile Home Park Palmdale Population served: 120
Winterhaven Mobile Estates Lancaster Population served: 40
White Rock Lake Rv Park Saugus Population served: 38
The Oaks Lake Hughes Population served: 25
North Trails Mutual Water Company Agua Dulce Population served: 200
Spv Water Company Agua Dulce Population served: 211
West Valley County Water District Lancaster Population served: 736
Amarillo Mutual Water Company Rosemead Population served: 3,134
Golden State Water Company (GSWC) - Artesia Rancho Cordova Population served: 47,978
Los Angeles County WW District 40 Reg 38 Lake Los Angeles Alhambra Population served: 13,600
Southern California Edison Company-Santa Catalina Avalon Population served: 4,200
Azusa Light and Water Azusa Population served: 110,000
Valley County Water District Baldwin Park Population served: 70,271
California Water Service Company-Lancaster San Jose Population served: 1,813
Golden State Water Company (GSWC) - Bell, Bell Gardens Rancho Cordova Population served: 57,934
Bellflower Home Gardens Water Company Bellflower Population served: 1,129
Bellflower - Somerset MWC Bellflower Population served: 46,000
Santa Clarita Water Division Santa Clarita Population served: 120,900
Bellflower Municipal Water System Bellflower Population served: 5,967
East Pasadena Water Company Pasadena Population served: 10,978
Park WC - Compton Downey Population served: 24,698
Calif State Polytechnical Univ - Pomona Pomona Population served: 24,880
Averydale Mutual Water Company Lancaster Population served: 960
Golden State Water Company (GSWC) - Claremont San Dimas Population served: 37,160
Los Angeles County Waterworks District 40 Reg. 39-Rock Creek Alhambra Population served: 1,305
Los Angeles County Waterworks District 40 Reg. 35 - N.E. L.A. Alhambra Population served: 770
Crescenta Valley CWD La Crescenta Population served: 32,000
Foothill Municipal Water District La Canada Flintridge Population served: 0
California Water Service Company - Dominguez San Jose Population served: 142,111
Kinneloa Irrigation District Pasadena Population served: 1,931
California Water Service Company - East Los Angeles San Jose Population served: 150,446
San Gabriel Valley Water Company- El Monte El Monte Population served: 226,904
Three Valleys Municipal Water District Claremont Population served: 0
Antelope Valley - East Kern Water Agency Palmdale Population served: 0
Suburban Water Systems-glendora Covina Population served: 4,802
Castaic Lake Water Agency Santa Clarita Population served: 0
Cal/am Water Company - Baldwin Hills Rosemead Population served: 18,397
Hemlock Mutual Water Company El Monte Population served: 864
La Canada Irrigation District La Canada Population served: 9,300
Lake Elizabeth Mutual Water Company Lake Elizabeth Population served: 1,750
Suburban Water Systems - La Mirada Covina Population served: 56,953
La Puente Valley County Water District La Puente Population served: 9,852
Las Flores Water Company Altadena Population served: 4,500
Lincoln Avenue Water Company Altadena Population served: 16,000
Littlerock Creek Irrigation District Littlerock Population served: 2,900
Leisure Lake Mobile Estates Chandler Population served: 280
Los Angeles County WW District 4 & 34-Lancaster Alhambra Population served: 180,131
Golden State Water Company (GSWC) -Willowbrook Rancho Cordova Population served: 10,771
Los Angeles County Waterworks District 21-kagel Canyon Alhambra Population served: 550
Golden State Water Company (GSWC) - Florence/Graham Rancho Cordova Population served: 65,492
Lynwood Park Mutual Water Company Compton Population served: 2,300
Maywood Mutual Water Company #1 Huntington Park Population served: 5,500
Maywood Mutual Water Company #2 Maywood Population served: 7,118
Maywood Mutual Water Company #3 Maywood Population served: 9,500
Metropolitan Water District of So. Cal. Los Angeles Population served: 0
Montebello Land & Water Company Montebello Population served: 32,219
Newhall CWD-Newhall Santa Clarita Population served: 12,487
California Conservation Camp #14 Signal Hill Population served: 95
Lancaster Park Mobile Home Park Los Osos Population served: 53
Peter Pitchess Honor Rancho Detention Center Alhambra Population served: 7,000
Golden State Water Company (GSWC) - Norwalk Rancho Cordova Population served: 44,466
Paradise Ranch Mobile Home Park Beverly Hills Population served: 290
Orchard Dale Water District Whittier Population served: 22,492
Palmdale Water District Palmdale Population served: 116,183
Palm Ranch Irrigation District Quartz Hill Population served: 5,530
California Water Service Company - Palos Verde San Jose Population served: 69,883
Pico WD Pico Rivera Population served: 24,100
Quartz Hill Water District Quartz Hill Population served: 22,000
California Water Service Company - Hermosa / Redondo Beach San Jose Population served: 95,605
Cal/Am Water Company - San Marino Rosemead Population served: 40,804
Rubio Canon Land & Water Association Altadena Population served: 9,600
Blue Skies Trailer Park Palmdale Population served: 40
L.a. Residential Community Foundation Saugus Population served: 154
The Painted Turtle Camp Lake Hughes Population served: 50
Bleich Flat Mutual Water Company Lancaster Population served: 75
Golden State Water Company (GSWC) - San Dimas San Dimas Population served: 54,872
San Gabriel County WD Rosemead Population served: 45,000
Sativa-L.A. County Water District Compton Population served: 6,837
South Montebello Irrigation District Montebello Population served: 9,574
Golden State Water Company (GSWC) - Southwest Gardena Population served: 271,677
Sunny Slope Water Company Pasadena Population served: 32,427
Sterling Mutual Water Company El Monte Population served: 776
Tract 180 Mutual Water Company Cudahy Population served: 14,000
Tract 349 Mutual Water Co. Cudahy Population served: 7,500
Park WC - Lynwood Downey Population served: 24,791
Valencia Heights Water Company West Covina Population served: 5,500
Valley View Mutual Water Company Baldwin Park Population served: 4,074
Valley Water Company La Canada Flintridge Population served: 9,900
Walnut Park Mutual Water Company Huntington Park Population served: 16,180
Suburban Water Systems - Whittier Covina Population served: 59,169
Mettler Valley Mutual Lancaster Population served: 100
Westside Park Mutual Water Palmdale Population served: 500
Del Rio Mutual El Monte Population served: 700
Reesedale Mutual Lancaster Population served: 100
Sunnyside Farms Mutual Water Company Palmdale Population served: 326
Los Angeles County Waterworks District 36-Val Verde Alhambra Population served: 5,150
Cal-am Water Company - Duarte Rosemead Population served: 21,589
San Gabriel Valley Water Company-Montebello El Monte Population served: 8,858
Rowland Water District Rowland Heights Population served: 62,106
Gswc - Hollydale Rancho Cordova Population served: 7,661
California Domestic Water Company Whittier Population served: 1,200
Suburban Water Systems-covina Knolls Covina Population served: 1,548
Los Angeles CWWD 40, R24, 27,33-Pearblsm Alhambra Population served: 10,557
Los Angeles County WW District 29 & 80-Malib Alhambra Population served: 31,040
Suburban Water Systems - San Jose Hills Covina Population served: 162,031
Liberty Utilities - Bellflower - Norwalk Downey Population served: 72,884
Golden State Water Company (GSWC) - South Arcadia San Dimas Population served: 26,827
La Habra Heights County Water District La Habra Heights Population served: 5,379
Golden State Water Company (GSWC) - South San Gabriel San Dimas Population served: 27,656
Las Virgenes Municipal Water District Calabasas Population served: 75,384
Walnut Valley Water District Walnut Population served: 115,475
Valencia Water Company Valencia Population served: 117,251
Mesa Crest Water Company La Canada Population served: 2,500
California Water Service Co-lake Hughes San Jose Population served: 673
Tierra Bonita Mutual Water Lancaster Population served: 35
Wilsona Gardens Mutual Lancaster Population served: 75
Little Baldy Water Llano Population served: 150
Shadow Acres Mutual Water Company Palmdale Population served: 385
Llano Mutual Water Company Llano Population served: 449
California Water Service Co-leona Valley San Jose Population served: 1,256
Green Valley County Water District Green Valley Population served: 1,000
Land Project Mutual Water Company Lancaster Population served: 1,500
Newhall Cwd-castaic Santa Clarita Population served: 6,376
Los Angeles County Waterworks District 37-Acton Alhambra Population served: 6,509
White Fence Farms Mutual Water Company Palmdale Population served: 1,145
Newhall Cwd-pinetree Santa Clarita Population served: 9,148
Newhall Cwd-tesoro Del Valle Santa Clarita Population served: 3,825
The Village Mobile Home Park Lancaster Population served: 70
White Fence Farms Mutual Water Company No. 3 Quartz Hill Population served: 636
Camp Williams-resort Water Azusa Population served: 80
Oak Grove Trailer Park Sleepy Valley Population served: 85
Western Skies Mobile Home Park Lancaster Population served: 240
Los Angeles, City Of - Power Plant #2 Los Angeles Population served: 32
Los Angeles, City Of - Power Plant #1 Los Angeles Population served: 37
City of Alhambra Alhambra Population served: 84,679
City of Arcadia Arcadia Population served: 57,639
Cerritos - City, Water Department Cerritos Population served: 49,041
Compton Water Department Compton Population served: 81,963
City Of Industry Waterworks Systems La Puente Population served: 7,000
Golden State Water Company (GSWC) - Culver City Rancho Cordova Population served: 36,215
Downey Water Department Downey Population served: 111,930
El Monte Water Department El Monte Population served: 22,968
El Segundo Water Department El Segundo Population served: 16,654
Pico Rivera Water Department Pico Rivera Population served: 39,000
Glendale Water Department Glendale Population served: 195,799
Glendora Water Department Glendora Population served: 45,300
Hawthorne Water Department San Jose Population served: 43,545
Huntington Park Water Department Huntington Park Population served: 17,209
Commerce-city, Water Department San Jose Population served: 3,828
City of Inglewood Inglewood Population served: 82,500
La Verne WD La Verne Population served: 32,230
Long Beach Water Department Long Beach Population served: 470,292
Los Angeles Department of Water and Power Los Angeles Population served: 3,935,257
Lomita Water Department Lomita Population served: 20,256
Lynwood Water Department Lynwood Population served: 71,297
Manhattan Beach Water Department Manhattan Beach Population served: 35,726
Monrovia Water Department Monrovia Population served: 36,590
Monterey Park Water Department Monterey Park Population served: 62,183
Paramount Water Department Paramount Population served: 55,051
Park Water Company - Bell Gardens Downey Population served: 11,879
Montebello-city, Water Department El Monte Population served: 6,962
Pasadena Pasadena Population served: 165,740
Pomona Water Department Pomona Population served: 151,713
Covina Water Department Covina Population served: 33,300
Covina Irrigating Company Covina Population served: 0
San Fernando Water Department San Fernando Population served: 23,839
Santa Monica Santa Monica Population served: 92,185
Sierra Madre Water Department Sierra Madre Population served: 11,094
Signal Hill - City, Water Department Signal Hill Population served: 11,411
South Gate Water Department South Gate Population served: 96,057
City of South Pasadena South Pasadena Population served: 25,899
Beverly Hills Water Department Beverly Hills Population served: 44,290
Vernon Water Department Vernon Population served: 45,000
Whittier Water Department Whittier Population served: 49,954
Burbank Water Department Burbank Population served: 105,543
Norwalk Water Department Norwalk Population served: 18,372
City of Torrance Water Department Torrance Population served: 145,438
Lakewood Water Department Lakewood Population served: 59,081
Santa Fe Springs Water Department Santa Fe Springs Population served: 18,199
Central Basin Municipal Water District Commerce Population served: 0
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