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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
FOLSOM STATE PRISON CA3410032 California Community 7,502
YUCCA WATER COMPANY LTD CA3610056 California Community 7,500
GREEN VALLEY GOLF CA1502480 California Transient Non-Community 7,500
KERN CO P&R-KERN RIVER COUNTY PARK CA1502318 California Transient Non-Community 7,500
COACHELLA VWD: I.D. NO. 11 CA1310011 California Community 7,500
FRANKLIN K LANE GROVE CA1210318 California Transient Non-Community 7,500
CALTRANS-WILLOWS RESTSTOP-SB CA1100258 California Transient Non-Community 7,500
CALTRANS-WILLOWS RESTSTOP-NB CA1100257 California Transient Non-Community 7,500
MILLERTON LAKE CA1000341 California Transient Non-Community 7,500
HUGHSON, CITY OF CA5010008 California Community 7,481
CITY OF DOS PALOS CA2410002 California Community 7,452
CITY OF FOWLER CA1010006 California Community 7,448
ESCALON, CITY OF CA3910003 California Community 7,429
GSWC - CALIPATRIA CA1310003 California Community 7,363
SAN GABRIEL VALLEY WATER CO-MONTEBELLO 2 CA1910117 California Community 7,330
VANDENBERG VILLAGE COMM. SERV. DIST. CA4210017 California Community 7,308
COTATI, CITY OF CA4910016 California Community 7,303
CITY OF GRIDLEY CA0410004 California Community 7,269
CABAZON WATER DIST. - ATTN: CALVIN LOUIE CA3301980 California Non-Transient Non-Community 7,250
CAL-WATER SERVICE CO.-WILLOWS CA1110003 California Community 7,240
AWA, IONE CA0310002 California Community 7,227
CITY OF WINTERS CA5710005 California Community 7,115
LOWER SALT CR NRAS CA4500050 California Transient Non-Community 7,100
LOS OSOS COMMUNITY SERVICES DISTRICT CA4010016 California Community 7,086
LAKE ARROWHEAD CSD CA3610005 California Community 7,038
SANTA YNEZ RIVER WATER CONS. DIST. ID#1 CA4210020 California Community 7,022
Rincon Northern 090600147 California Community 7,003
HENRY COE PARK RABBIT SPRING CA4310302 California Community 7,000
ARROWHEAD REGIONAL MEDICAL CENTER CA3601135 California Non-Transient Non-Community 7,000
PETER PITCHESS HONOR RANCHO DETN. CTR CA1900046 California Community 7,000
ADOLFO'S CA1600278 California Transient Non-Community 7,000
CHERRY AUCTION CA1000442 California Transient Non-Community 7,000
GOLDEN STATE WC - COWAN HEIGHTS CA3010047 California Community 6,997
HEBER PUBLIC UTILITY DISTRICT CA1310007 California Community 6,979
FORT BRAGG, CITY OF CA2310001 California Community 6,919
NEVADA ID - NORTH AUBURN CA3110026 California Community 6,870
NEVADA ID - LAKE OF PINES CA2910014 California Community 6,870
OJAI WATER SYSTEM CA5610014 California Community 6,801
UNIVERSITY OF PACIFIC CA3900960 California Community 6,800
UNIVERSITY OF PACIFIC CA3900959 California Community 6,800
CALTRANS, CACTUS CITY REST AREA CA3301075 California Transient Non-Community 6,800
BEALE AIR FORCE BASE CA5810700 California Community 6,785
FORESTHILL PUBLIC UTILITY DIST CA3110003 California Community 6,782
NUEVO WATER COMPANY CA3310026 California Community 6,733
JOSHUA BASIN WATER DISTRICT CA3610025 California Community 6,640
SONOMA STATE COLLEGE CA4900862 California Transient Non-Community 6,600
CHINA LAKE NAVAL AIR WEAPONS STATION CA1510703 California Community 6,600
CALWA COUNTY WATER DIST CA1010002 California Community 6,528
LAKE OF THE SPRINGS CA5800809 California Non-Transient Non-Community 6,500
PSMCSD - PAJARO CA2710020 California Community 6,500