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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
LAMONT PUBLIC UTIL DIST 1 CA1510030 California Community 1,860
U.S. ARMY CORP NEW HOGAN CA0500003 California Transient Non-Community 1,860
ARROWBEAR PARK CWD CA3610110 California Community 1,856
GEORGETOWN DIVIDE PUD CA0910022 California Community 1,853
MECCA ARCO TRAVEL CENTER CA3303092 California Non-Transient Non-Community 1,847
FIELDBROOK GLENDALE C.S.D. CA1210020 California Community 1,845
SAN JOAQUIN COUNTY - COLONIAL HEIGHTS CA3910002 California Community 1,841
NORTH MARIN WD - PT. REYES CA2110006 California Community 1,841
INYO COUNTY PWD - LONE PINE CA1410009 California Community 1,835
VINEYARD AVENUE ACRES MWC CA5610029 California Community 1,820
SEARLES VALLEY MINERALS OPERATIONS INC CA3610854 California Community 1,818
LADERA GOLF CLUB CA3301186 California Non-Transient Non-Community 1,806
NAVAL WEAPONS STATION CA0710700 California Community 1,800
GATEWAY CA1300018 California Community 1,800
LANTERMAN DEVELOPMENTAL CENTER CA7300208 California Community 1,800
EL CAMINO HIGH SCHOOL CA3400269 California Transient Non-Community 1,800
YOUTH TRAINING SCHOOL CA7300309 California Community 1,800
LANTERMAN STATE HOSPITAL CA0000208 California Community 1,800
YOUTH TRAINING SCHOOL CA0000309 California Community 1,800
NPS LASSEN VOLCANIC NP CA4510510 California Transient Non-Community 1,800
CHP - MISSION GRADE SCALES CA0110800 California Transient Non-Community 1,800
LAKE SISKIYOU CAMPGROUND CA4700501 California Transient Non-Community 1,800
CHRISTIAN VALLEY PARK CSD CA3110034 California Community 1,800
SLAVIC MISSIONARY CHURCH INC CA3400375 California Transient Non-Community 1,800
DP&R - MCARTHUR-BURNEY FALLS SP CA4510302 California Transient Non-Community 1,800
DELANO HIGH SCHOOL CA1502065 California Transient Non-Community 1,800
CAL TRANS - VALLEY WELLS CA3601097 California Transient Non-Community 1,800
FRESNO CO WATERWORKS DIST 21 CA1010031 California Community 1,800
TRI VALLEY GROWERS PLANT J CA4300754 California Transient Non-Community 1,800
BIG PINE FLATS ADMIN & RECREATION CA3600483 California Transient Non-Community 1,800
PALM SPRINGS AERIAL TRAMWAY CA3301494 California Non-Transient Non-Community 1,799
CAL-WATER SERVICE CO.-HAMILTON CITY CA1110002 California Community 1,799
FRESNO COUNTY WATER WORKS CA1010015 California Community 1,799
LAKE ELIZABETH MUTUAL WATER CO. CA1910056 California Community 1,790
SAN MATEO COUNTY MEMORIAL PARK CA4100536 California Transient Non-Community 1,790
MADERA CO SA3-PARKSDALE CA2010006 California Community 1,789
LINDEN COUNTY WATER DISTRICT CA3910019 California Community 1,784
HOPYARD FARM VA6099283 California Community 1,772
TASCO SPRECKELS WATER COMPANY CA2710023 California Community 1,772
COLD SPRINGS WATER CO CA5510011 California Community 1,771
MAJESTIC PINES COMMUNITY SD CA3710041 California Community 1,768
TUD - PONDEROSA CA5510002 California Community 1,767
TUD - TUOLUMNE WATER SYSTEM CA5510003 California Community 1,761
VENTURA CWWD NO. 38 - LAKE SHERWOOD CA5610069 California Community 1,759
LODGEPOLE OVERFLOW CA0202537 California Transient Non-Community 1,750
CALTRANS CAMP ROBERTS RSRA NB CA2700984 California Transient Non-Community 1,750
HARRIS RANCH RESTAURANT CA1000214 California Non-Transient Non-Community 1,750
HOME GARDEN CSD CA1610007 California Community 1,750
PENNGROVE WATER COMPANY (PUC) CA4910003 California Community 1,742
WOODVILLE PUBLIC UTILITY DIST CA5410025 California Community 1,740