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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
CENTRAL WATER DISTRICT CA4410018 California Community 2,726
FCWWD 41/SHAVER LAKE CA1010017 California Community 2,722
CITY OF ALTURAS CA2510001 California Community 2,715
COLUMBIA JUNIOR COLLEGE CA5500150 California Non-Transient Non-Community 2,700
FACILITIES MAINTENANCE OFFICE CA3710703 California Community 2,700
CUCC - DUTCH HAVEN CA3410019 California Community 2,700
STRATHMORE PUBLIC UTIL DIST CA5410012 California Community 2,669
WEED, CITY OF CA4710009 California Community 2,662
TERRA BELLA IRRIGATION DISTRICT - TBT CA5410038 California Community 2,656
ARROWHEAD VILLAS MUTUAL SERVICE COMPANY CA3610093 California Community 2,654
KGCSA-DAHLGREN VA6099295 California Community 2,650
LAKESIDE PARK ASSOCIATION CA0910019 California Community 2,648
PINE VALLEY MUTUAL WC CA3710039 California Community 2,645
CARUTHERS COMM SERV DIST CA1010039 California Community 2,613
AIRLINE CROSSING TX1650003 California Community 2,600
RIO MESA HIGH SCHOOL/OXNARD UHS CA5602407 California Non-Transient Non-Community 2,600
CALTRANS-CORNING REST-NB & SB CA5200604 California Transient Non-Community 2,600
CALTRANS-RED BLUFF REST-NB CA5200603 California Transient Non-Community 2,600
SAN MIGUEL COMMUNITY SERVICES DISTRICT CA4010010 California Community 2,600
Tuolumne - Black Oak Casino 090605149 California Non-Transient Non-Community 2,600
FULTON WATER COMPANY CA3110015 California Community 2,593
NORTH GUALALA WATER COMPANY CA2310007 California Community 2,593
FRAZIER PARK PUD CA1510007 California Community 2,592
EAST QUINCY SERVICES DISTRICT CA3210008 California Community 2,572
CWS - KERNVILLE CA1510033 California Community 2,572
BERTSCH OCEAN VIEW CSD CA0810003 California Community 2,570
SMITH RIVER C.S.D. CA0810002 California Community 2,568
CAYUCOS BEACH MUTUAL WATER COMPANY CA4010006 California Community 2,567
CALTRANS CAMP ROBERTS RSRA SB CA2700983 California Transient Non-Community 2,560
Tule River Reservation Main 090600156 California Community 2,560
ROGINA WATER COMPANY INC. CA2310002 California Community 2,554
SONOMA COAST STATE BEACH CA4900860 California Transient Non-Community 2,550
CALTRANS-O'BRIEN SRRA CA4500284 California Transient Non-Community 2,550
Atwater High School, MUHSD CA2400061 California Non-Transient Non-Community 2,550
LOS ANGELES CO WW DIST 16 CA1910074 California Community 2,550
TIPTON COMMUNITY SERVICES DIST CA5410014 California Community 2,543
ALPINE WATER USERS ASSOCIATION CA3610002 California Community 2,534
KERN VALLEY AIRPORT CA1502327 California Transient Non-Community 2,507
MILLERTON SRA MEADOW TANK HILL CA2010300 California Transient Non-Community 2,506
CALIF MEDICAL FACILITY CA7300106 California Community 2,505
JIMMYS ONE STOP CA3901370 California Transient Non-Community 2,505
CALIF MEDICAL FACILITY CA0000106 California Community 2,505
YOSEMITE NPS-TUOLUMNE MEADOWS CA5510500 California Transient Non-Community 2,500
QUAIL VALLEY REC VILLAGE CA5403066 California Transient Non-Community 2,500
CALTRANS-RED BLUFF REST-SB CA5200602 California Transient Non-Community 2,500
CALTRANS-HILLCREST SRRA CA4500283 California Transient Non-Community 2,500
CALIF STATE U AT SAN JOSE CA4300809 California Transient Non-Community 2,500
O'CONNOR HOSPITAL CA4300808 California Non-Transient Non-Community 2,500
VALLEY DRIVE-IN THEATER CA4200874 California Transient Non-Community 2,500
CALIF DEPT OF TRANSPORTATION CA4200823 California Transient Non-Community 2,500