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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.

Clear
System Name PWSID State Type Population Served
CORRECTIONAL TRAINING FACILITY - SOLEDAD CA2710850 California Community 4,269
COMMERCE-CITY, WATER DEPT. CA1910050 California Community 4,205
MEINERS OAKS CWD CA5610005 California Community 4,200
CSP-CUYAMACA-GRANITE SPRINGS CA3710310 California Transient Non-Community 4,200
CAL AM - ARDEN CA3410045 California Community 4,191
MEADOW VISTA CWD CA3110009 California Community 4,183
GOLDEN STATE WATER CO - WRIGHTWOOD CA3610047 California Community 4,177
PLANADA CSD CA2410007 California Community 4,164
CENTERVILLE C.S.D. CA4510011 California Community 4,151
RUSSIAN RIVER COUNTY WATER DISTRICT CA4910008 California Community 4,150
ARMONA COMMUNITY SERVICES DIST CA1610001 California Community 4,143
CITY OF WHEATLAND CA5810004 California Community 4,124
KELSEYVILLE CO WATERWORKS DISTRICT 3 CA1710007 California Community 4,102
CORRECTIONAL TRAINING FACILITY CA7300124 California Community 4,100
ATASCADERO STATE HOSPITAL CA4010832 California Community 4,100
CENTINELA STATE PRISON CA1310801 California Community 4,100
CORRECTIONAL TRAINING FACILITI CA0000124 California Community 4,100
CHUCKAWALLA VALLEY STATE PRISON CA3310802 California Community 4,090
SAN JOAQUIN, CITY OF CA1010034 California Community 4,060
LAKE COUNTY CSA 21 - NORTH LAKEPORT CA1710021 California Community 4,046
FARM MUTUAL W.C. (THE) CA3310046 California Community 4,026
CAMP FAR WEST RESORT CA5800801 California Transient Non-Community 4,012
SHEEP CREEK WATER COMPANY CA3610109 California Community 4,002
FAIRVIEW STATE HOSPITAL CA7300212 California Transient Non-Community 4,000
FOLSOM STATE PRISON CA7300101 California Community 4,000
CERES DRIVE IN AND FLEA MARKE CA5000380 California Transient Non-Community 4,000
MATAGUAY SCOUT RESERVATION CA3701965 California Transient Non-Community 4,000
BIG OAK RANCH CA3701363 California Transient Non-Community 4,000
AEROJET LIQUID ROCKET CO CA3400233 California Transient Non-Community 4,000
COLLEGE OF THE DESERT--OOB CA3301155 California Non-Transient Non-Community 4,000
YOSEMITE NPS-GLACIER POINT CA2210511 California Transient Non-Community 4,000
WILLIAMS S HART UNION HIGH / PLACERITA J CA1900553 California Non-Transient Non-Community 4,000
CITIZENS UTILI-CLEARWATER AZ0407441 California Community 4,000
KING GEORGE CO. COURTHOUSE VA6099050 California Community 3,985
WEAVERVILLE C.S.D. CA5310001 California Community 3,975
WARNER SPRINGS RANCH RESORT LLC CA3700959 California Non-Transient Non-Community 3,972
SONOMA STATE HOSPITAL CA0000202 California Community 3,970
JOINT REGIONAL WATER SUPPLY SYSTEM CA3010071 California Community 3,947
DEL MAR, CITY OF CA3710004 California Community 3,919
BIGHORN - DESERT VIEW WATER AGENCY CA3610009 California Community 3,916
TESORO VIEJO MASTER MWC, INC. CA2010017 California Community 3,885
TREASURE ISLAND CA3810702 California Community 3,864
WOODLANDS DEVELOPMENT CA4010081 California Community 3,862
CDCR-HIGH DESERT STATE PRISON CA1805004 California Community 3,857
ANGELS, CITY OF CA0510003 California Community 3,836
GILBERT STREET COMPLEX CA3600215 California Community 3,833
SO. CAL. EDISON CO.-SANTA CATALINA CA1910006 California Community 3,822
BISHOP, CITY OF CA1410001 California Community 3,819
SAN JOAQUIN COUNTY-MOKELUMNE ACRES CA3910017 California Community 3,802
WILLOW COUNTY WATER DISTRICT CA2310005 California Community 3,797