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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
TEJON RANCH GRAPEVINE WATER CA1500415 California Non-Transient Non-Community 2,207
WESTMORLAND, CITY OF CA1310008 California Community 2,202
Dry Creek Rancheria 090600127 California Non-Transient Non-Community 2,200
MIL POTRERO MWC CA1510028 California Community 2,200
CAL TRANS - C.V. KANE CA3601096 California Transient Non-Community 2,200
FOOTHILL FARMS SYSTEM CA3400261 California Non-Transient Non-Community 2,200
ALPINE SPRINGS COUNTY WATER DISTRICT CA3110029 California Community 2,200
INLAND VALLEY DEVELOPMENT AGENCY-NORTON CA3610704 California Non-Transient Non-Community 2,200
PARK WATER CO NO 22-S GATE CA1910115 California Community 2,200
POPLAR COMM SERVICE DIST CA5410026 California Community 2,200
CHESTER PUBLIC U.D. CA3210009 California Community 2,187
CENTRAL CA WOMENS FACILITY CA2010800 California Community 2,183
MORRO ROCK MUTUAL WATER CO CA4010015 California Community 2,181
NACIMIENTO WATER COMPANY CA4010027 California Community 2,181
RIO LINDA SENIOR HIGH SCHOOL CA3400262 California Non-Transient Non-Community 2,170
NORTH HIGH SCHOOL CA1502322 California Transient Non-Community 2,165
WHISKEYTOWN NRA-BRANDY CREEK CA4510505 California Transient Non-Community 2,164
MI WUK VILLAGE MUT WTR CO CA5510006 California Community 2,163
LONDON COMMUNITY SERV DIST CA5410017 California Community 2,134
LUCERNE WATER CO. - CAL WATER SERVICE CA1710005 California Community 2,129
HERLONG PUBLIC UTILITY DISTRICT CA1805007 California Community 2,114
INTERSTATE 5 UTILITY COMPANY CA1500491 California Non-Transient Non-Community 2,100
CAL STATE FRESNO - CA1000339 California Non-Transient Non-Community 2,100
CITY OF PORTOLA CA3210003 California Community 2,100
TOM PISTACHIO WATER SYSTEM CA2000370 California Non-Transient Non-Community 2,100
SOUTH HIGH SCHOOL WATER SYSTEM CA1502324 California Non-Transient Non-Community 2,100
THUNDERBIRD CWD CA3600306 California Community 2,098
BORON CSD CA1510002 California Community 2,086
GOLDEN STATE WATER CO - APPLE VLY NORTH CA3610105 California Community 2,086
CWSC LAS LOMAS CA2710013 California Community 2,084
CRESTVIEW MUTUAL WATER CO CA5610058 California Community 2,079
CITY OF BIGGS CA0410001 California Community 2,060
DON JULIO JUNIOR HIGH SCHOOL [SWS] CA3400260 California Non-Transient Non-Community 2,050
CSP MT TAMALPAIS-SUMMIT CA2110308 California Transient Non-Community 2,049
GARBERVILLE SANITARY DISTRICT CA1210008 California Community 2,041
VETERANS HOME OF CALIFORNIA CA7300501 California Community 2,040
CAL AMERICAN WC - LAS POSAS ESTATES CA5610081 California Community 2,039
GOLDEN STATE WATER COMPANY-CYPRESS RIDGE CA4010040 California Community 2,026
CVUSD, CV HIGH SCHOOL CA3301149 California Non-Transient Non-Community 2,025
ELSINORE WD - LAKELAND CA3310079 California Community 2,017
Redding Rancheria 090605083 California Community 2,015
CABAZON WATER DISTRICT CA3310047 California Community 2,010
FRESNO COUNTY WATER WORKS CA1010033 California Community 2,006
BUTTONWILLOW TIGER MART CA1504013 California Transient Non-Community 2,006
SHASTA CSA - JONES VALLEY, #6 CA4510004 California Community 2,006
CSP-VAN DAMME STATE PARK CA2310302 California Transient Non-Community 2,004
LAKE COUNTY CSA 20 - SODA BAY CA1710022 California Community 2,003
CAL AMERICAN WATER COMPANY - PIRU CA5610021 California Community 2,003
VALLEY CHRISTIAN HIGH SCHOOL CA1909005 California Non-Transient Non-Community 2,000
MARIPOSA PUBLIC UTILITY DIST CA2210001 California Community 2,000