Browse Water Systems

20,012 public water systems in CA.

Public Water Systems Database

Browse 20,012 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
CSP - RANCHO DEL OSO CA4410306 California Transient Non-Community 669
CAL AM - WALNUT GROVE CA3410047 California Community 667
BRANDEIS BARDIN INSTITUTE CA5603301 California Community 665
SHELL OIL PRODUCTS US CA1502187 California Non-Transient Non-Community 665
EAST WOOD FARMS CWU CA3600100 California Community 665
SONOMA VILLAGE CA3301464 California Transient Non-Community 663
WHISKEYTOWN NRA-WHISKEY CREEK CA4510504 California Transient Non-Community 662
CENTER WATER CO CA3600070 California Community 662
KELLY'S MARKET CA3601109 California Transient Non-Community 660
EL DORADO MUTUAL WATER CO. CA1900803 California Community 660
MINERAL KING SCHOOL CA5400870 California Transient Non-Community 657
DEL ORO TRAVER DISTRICT CA5400553 California Community 657
LILY OF THE VALLEY MOBILE VILLAGE CA1900913 California Community 657
GASQUET C.S.D. CA0800555 California Community 657
CEDAR LODGE CA2210900 California Community 656
RUSH RANCH OPEN SPACE CA4810035 California Transient Non-Community 656
PRUNEDALE SCHOOL WS CA2700705 California Non-Transient Non-Community 655
PLACER CSA - SHERIDAN CA3110048 California Community 653
TOKAY PARK WATER CO CA3400172 California Community 653
CDPR FOUR RIVERS DISTRICT-SAN LUIS CREEK CA2410304 California Transient Non-Community 653
SAN ANTONIO LAKE PARK SOUTH WS CA2701184 California Transient Non-Community 653
DOMAINE CARNEROS CA2801011 California Non-Transient Non-Community 652
US ARMY PREVENTIVE MED ACTVTY CA3910700 California Community 651
CRESTWOOD SCHOOL CA5400857 California Non-Transient Non-Community 651
FRANKLIN ELEMENTARY SCHOOL CA3400248 California Non-Transient Non-Community 650
TEMPERANCE-KUTNER SCHOOL CA1000197 California Transient Non-Community 650
CLOVIS M COLE SCHOOL CA1000107 California Transient Non-Community 650
CAMPBELL SOUP CA5000205 California Non-Transient Non-Community 650
BARRY ELEMENTARY SCHOOL CA5100149 California Non-Transient Non-Community 650
WOODVILLE FARM LABOR CENTER CA5400792 California Community 650
Bear River - Tish Non Village 090605119 California Community 650
STANISLAUS COUNTY ADMIN BLDG CA5000377 California Transient Non-Community 650
Mesquite Creek 090400301 California Community 650
COASTAL CHRISTIAN SCHOOL CA4000844 California Non-Transient Non-Community 650
SHASTA PAPER COMPANY CA4500222 California Non-Transient Non-Community 650
DOWNIEVILLE PUBLIC UTILITY DIS CA4600015 California Transient Non-Community 650
SUNBEAM LAKE RV RESORT CA1300626 California Community 650
HART- RANSOM UNION SCHOOL & DISTRICT CA5000133 California Non-Transient Non-Community 650
CENTER JUNIOR HIGH SCHOOL CA3400372 California Transient Non-Community 650
MUSD-FRENCH CAMP SCHOOL CA3900712 California Non-Transient Non-Community 650
NAPA PIPE REDEVELOPMENT PARTNERS CA2800717 California Non-Transient Non-Community 650
JEHOVAH'S WITNESSES HALL CA4901165 California Transient Non-Community 650
-BUREAUOF-LAND MANAGEMENT CA1300590 California Transient Non-Community 650
EASTSIDE UNION SCHOOL DISTRICT CA1900751 California Non-Transient Non-Community 650
BIG ROCK C.S.D. CA0800532 California Community 650
SANDRA WALL CA3000503 California Community 650
THE MORNING STAR PACKING COMPANY CA2400175 California Non-Transient Non-Community 650
AVIZA TECHNOLOGY CA4400806 California Non-Transient Non-Community 650
UNITED TECHNOLOGY - CHEMICAL DIVISION CA4300756 California Non-Transient Non-Community 650
VENTURA BOYSCOUT COUNCIL CA5601301 California Transient Non-Community 650