Water Providers in Los Angeles County
- American States Utility Services - Fort Bliss
- Bellflower-Somerset Mutual Water Company
- Bellflower Water
- Cal Am Water
- California American Water
- City of Alhambra Water
- City Of Bell Gardens Water
- City of Huntington Park Water Department
- City Of Industry Water Department
- Compton Water
- Covina Water
- Downey Water
- El Monte Water Company
- El Segundo Water
- Golden State Water - Claremont
- Golden State Water Company - South San Gabriel
- Golden State Water - San Dimas
- Golden State Water - Southwest
- Golden State Water - Willowbrook
- GSWC - Culver City
- La Canada Irrigation District
- LA County Waterworks
- La County Waterworks - Pearblossom - Littlerock - Sun Village
- LA County Waterworks - Peter J. Pitchess Honor Rancho Detention Center
- La Habra Heights County Water District
- La Puente Water
- Liberty Utilities - Bellflower-Norwalk District
- Liberty Utilities Compton
- Lincoln Avenue Water Company
- Los Angeles County Public Works - Rancho Los Amigos
- Los Angeles County Waterworks Districts (LACWD) - #29 Malibu & Marina Del Rey
- Los Angeles Cwwd 37 - Acton
- Los Angeles Water - Val Verde
- Maywood Mutual Water Company
- Maywood Mutual Water Company
- Maywood Water
- Montebello Water
- Montebello Water Company
- Palm Ranch Irrigation District
- Quartz Hill Water
- San Gabriel Valley Water Company
- San Gabriel Valley Water Company - Montebello
- Santa Fe Springs Water Department
- Sativa Water
- SCV Water
- SCV Water - Castaic Division
- SCV Water - Newhall Division
- SCV Water - Pinetree
- Scv Water - Tesoro Division
- Sierra Madre Water
- Signal Hill Water
- South Montebello Irrigation District
- Suburban Water - Glendora
- Suburban Water - San Jose Hills
- Tract 180 Water Company
- Tract 349 Mutual Water Company
- Valencia Heights Water Company
- Valley Water Company
Water Providers by City
- Alhambra
- Altadena
- Baldwin Hills
- Bellflower
- Compton
- Covina
- Cudahy
- Downey
- El Monte
- El Segundo
- Huntington Park
- La Cañada Flintridge
- La Habra Heights
- La Puente
- Maywood
- Montebello
- Newhall
- Quartz Hill
- San Dimas
- Santa Clarita
- Santa Fe Springs
- Sierra Madre
- Signal Hill
- West Covina
