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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
AV JOINT UNIF HI SCH & DISTRICT OFFICES CA1900795 California Non-Transient Non-Community 3,000
AL CONTRERRAS CA1900082 California Transient Non-Community 3,000
QUARTZ HILLS HIGH SCHOOL CA1900003 California Non-Transient Non-Community 3,000
HANFORD ICE COMPANY CA1600283 California Transient Non-Community 3,000
FLEET RESERVE ASSOCIATION CA1600273 California Transient Non-Community 3,000
HANFORD JOINT UNION H.S. EAST CAMPUS CA1600250 California Non-Transient Non-Community 3,000
CALTRANS-BORON REST STOP WATER SYSTEM CA1502422 California Transient Non-Community 3,000
MESA MARIN RACEWAY CA1502471 California Transient Non-Community 3,000
WILD WATER ADVENTURES CA1000389 California Transient Non-Community 3,000
LAKE PARDEE REC AREA CA0300038 California Transient Non-Community 3,000
Soboba 090600151 California Community 3,000
GREEN VALLEY MWC CA3610023 California Community 2,993
CCI - TEHACHAPI CA1510800 California Community 2,993
PARLIER, CITY OF CA1010036 California Community 2,990
AROMAS WATER DISTRICT CA3510004 California Community 2,988
FORT BLISS BIGGS ARMY AIRFIELD TX0710078 California Community 2,961
FRESNO COUNTY WATER WORKS CA1010008 California Community 2,958
HERITAGE RANCH CSD CA4010012 California Community 2,956
NPS-GRANT GROVE CA1010501 California Community 2,950
Quechan Casino Resort 090400679 California Non-Transient Non-Community 2,950
NPS-WOLVERTON CA5410503 California Community 2,940
NPS-ASH MOUNTAIN CA5410513 California Community 2,930
SALINAS VALLEY STATE PRISON CA2710851 California Community 2,930
NICE MUTUAL WATER COMPANY CA1710008 California Community 2,929
CAMPOS VERDES JR HIGH SCHOOL CA3400258 California Non-Transient Non-Community 2,926
NORTHGATE 880 [SWS] CA3400173 California Non-Transient Non-Community 2,926
SUTTER COMMUNITY S.D. CA5110007 California Community 2,904
NPS-PINEWOOD WATER SYSTEM CA5410520 California Transient Non-Community 2,900
PALO ALTO PARK MUTUAL WATER COMPANY CA4110020 California Community 2,900
RANCHO MONTICELLO RESORT CA2800595 California Community 2,900
NPS-SHEEP CREEK CA1010500 California Transient Non-Community 2,900
NORTHEAST GARDENS WATER CO CA1010022 California Community 2,870
PLACER CWA - NEWCASTLE CA3110016 California Community 2,850
JUNE LAKE PUD - DOWN CANYON CA2610004 California Community 2,810
CITY OF VALLEJO-LAKES SYSTEM CA4810021 California Community 2,800
RIO COSUMNES CORRECTIONAL CENTER [SWS] CA3400229 California Community 2,800
SEASIDE MUNICIPAL WATER SYSTEM CA2710018 California Community 2,800
LAND PROJECTS MUTUAL WATER CO. CA1910246 California Community 2,800
LERDO SHERIFF S FACILITY CA1502320 California Community 2,800
LAKE SHASTINA C.S.D CA4710013 California Community 2,790
O'CONNOR TRACT CO-OPERATIVE WATER CO. CA4110019 California Community 2,789
TOWN OF YOUNTVILLE CA2810007 California Community 2,787
ARBUCKLE PUBLIC UTILITY DISTRICT CA0610001 California Community 2,778
NORTH YUBA WATER DISTRICT CA5810006 California Community 2,772
PIXLEY PUBLIC UTIL DIST CA5410009 California Community 2,772
JUNE LAKE PUD VILLAGE CA2610002 California Community 2,763
RIVERDALE PUBLIC UTILITY DISTRICT CA1010028 California Community 2,756
FORT HUNTER LIGGETT CA2710702 California Community 2,753
HALF MOON BAY STATE BEACH CA4110301 California Transient Non-Community 2,739
Bishop Paiute-Shoshone Tribe 090600122 California Community 2,735