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Browse Water Systems

20,002 public water systems in CA.

Public Water Systems Database

Browse 20,002 EPA-regulated public water systems with identifiers, population served, and water source type. Use the filters below to narrow results by state, system type, or name.

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System Name PWSID State Type Population Served
NEVADA ID - E. GEORGE, BANNER MOUNTAIN CA2910004 California Community 17,154
MCKINLEYVILLE C.S.D. CA1210016 California Community 16,900
ORANGE VALE WATER COMPANY CA3410016 California Community 16,861
BISHOP CREEK CHEVRON CA1400535 California Transient Non-Community 16,793
TOWN OF DISCOVERY BAY CA0710009 California Community 16,790
PINEDALE COUNTY WATER DISTRICT CA1010026 California Community 16,736
UKIAH, CITY OF CA2310003 California Community 16,607
OLIVEHURST PUBLIC U.D. CA5810003 California Community 16,595
EL SEGUNDO-CITY, WATER DEPT. CA1910040 California Community 16,445
FILLMORE WATER DEPT CA5610002 California Community 16,419
CITY OF CUPERTINO CA4310018 California Community 16,336
CWSC KING CITY CA2710009 California Community 16,334
NASA AMES RESEARCH CENTER CA4300997 California Community 16,273
WALNUT PARK MUTUAL WATER CO. CA1910169 California Community 16,180
LINCOLN AVENUE WATER CO. CA1910063 California Community 16,088
Morongo 090600142 California Community 16,000
SANTA CLARITA VALLEY W.A.-PINETREE DIV. CA1910250 California Community 15,998
CARPINTERIA VALLEY WATER DISTRICT CA4210001 California Community 15,996
CITY OF LA PALMA CA3010100 California Community 15,948
RIPON, CITY OF CA3910007 California Community 15,741
US ARMY FORT IRWIN CA3610705 California Community 15,701
CAL AM - FRUITRIDGE VISTA CA3410023 California Community 15,652
RIO LINDA/ELVERTA COMMUNITY WATER DIST CA3410018 California Community 15,460
NORTHSTAR C.S.D. CA3110028 California Community 15,452
HUNTINGTON PARK-CITY, WATER DEPT. CA1910049 California Community 15,437
LOMA LINDA UNIVERSITY CA3600152 California Community 15,368
USMC - 29 PALMS CA3610703 California Community 15,248
THOUSAND PINES CHRISTIAN CA3600585 California Non-Transient Non-Community 15,034
SOUTH MONTEBELLO IRRIGATION DIST. CA1910153 California Community 15,021
EAST BIGGS WATER SYSTEM TX0710187 California Community 15,000
CALIFORNIA MENS COLONY CA4010830 California Community 15,000
SOMERSET MUTUAL WATER CO CA1910150 California Community 15,000
NPS LASSEN VOLCANIC NP CA1810500 California Transient Non-Community 15,000
LEMOORE NAVAL AIR STATION CA1610700 California Community 15,000
CALTRANS-MAXWELL RESTSTOPS CA0600050 California Transient Non-Community 15,000
CALAVERAS BIG TREES CSP CA0510303 California Transient Non-Community 15,000
AMERICAN WATER O&M, LLC - VSFB CA4210700 California Community 14,971
SBDNO COUNTY SERVICE AREA 64 CA3610121 California Community 14,911
CITY OF LIVINGSTON CA2410004 California Community 14,894
CITY OF RED BLUFF CA5210004 California Community 14,710
CITY OF PARLIER CA1010025 California Community 14,576
CITY OF MODESTO - SALIDA CA5010005 California Community 14,537
HANNA FLATS CAMPGROUND CA3600481 California Transient Non-Community 14,380
Pala North 090605153 California Community 14,280
ARVIN WATER COMPANY CA3410038 California Community 14,200
CALIFORNIA CITY, CITY OF CA1510032 California Community 14,198
MCFARLAND, CITY OF CA1510013 California Community 14,161
NEVADA ID - LOMA RICA CA2910006 California Community 14,072
TRACT 180 MUTUAL WATER CO. CA1910159 California Community 14,000
CHOWCHILLA CITY WATER DEPT CA2010001 California Community 13,916