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
CDPR-MCCONNELL CA2410301 California Transient Non-Community 286
MCCLURE BOAT CLUB, INC. CA2210905 California Community 286
CWS COUNTRYWOOD SYSTEM CA1500408 California Community 285
MALAGA SCHOOL CA1000404 California Non-Transient Non-Community 285
MARIPOSA PINES MUTUAL CA2210906 California Community 284
CWS-ONYX WATER SYSTEM CA1510043 California Community 284
MERQUIN ELEMENTARY SCHOOL CA2400064 California Non-Transient Non-Community 284
CAMP NAVARRO CA2300873 California Transient Non-Community 284
HARRIS RD WS #10 CA2702704 California Non-Transient Non-Community 284
SALMON HARBOR RESORT CA0800536 California Transient Non-Community 284
LICK OBSERVATORY-UCSC CA4300909 California Community 284
DEAN CREEK RESORT CA1200637 California Transient Non-Community 283
MAJOR VISTA WATER CA5700614 California Community 282
BLUEBELL VALLEY MWC CA5500040 California Community 282
CYPRESS ACRES CA0400152 California Non-Transient Non-Community 282
ALEXANDER VALLEY RV PARK & CAMPGROUND CA4901337 California Transient Non-Community 281
WOOD CAMP - WATER SYSTEM CA2900619 California Transient Non-Community 281
TOWN OF SUNOL - SFPUC CA0110012 California Community 281
HAGAMAN COUNTY PARK CA2400089 California Transient Non-Community 280
GALT M H ESTATES CA3400126 California Community 280
RICHFIELD ELEMENTARY SCHOOL CA5200565 California Non-Transient Non-Community 280
IMPERIAL MANOR MOBILEHOME COMMUNITY CA3400190 California Community 280
BALTIMORE AIRCOIIL COMPANY CA2000655 California Non-Transient Non-Community 280
SKYLAKE YOSEMITE CAMP CA2000562 California Transient Non-Community 280
ARCOHE ELEM SCHOOL - EAST CAMPUS CA3400442 California Non-Transient Non-Community 280
HAYDEN FLAT CAMPGROUND F CA5304004 California Transient Non-Community 280
SIERRA ROAD IMPROVEMENT ASSOCIATION INC CA4300546 California Community 280
GREENHORN CREEK CSD CA3200188 California Community 280
BLACK OAK GOLF COURSE CA3103205 California Transient Non-Community 280
GLENBROOK MOBILE ESTATES CA3100046 California Community 280
OWENS-BROCKWAY GLASS CONTAINER INC CA3900825 California Non-Transient Non-Community 280
CAL FIRE-EEL RIVER CONSERVATION CAMP CA1210800 California Non-Transient Non-Community 280
SHEPHERD OF THE MOUNTAINS LUTHERAN CHURC CA1503558 California Transient Non-Community 280
FRANCIS FERRARO CA1000009 California Community 280
FRESNO COUNTY WATERWORKS CA1000033 California Community 280
GENERAL SHAFTER SCHOOL CA1502094 California Non-Transient Non-Community 280
HAT CREEK HEREFORD RANCH RV PARK CA4500309 California Transient Non-Community 280
WOODSIDE RV PARK CA2300644 California Community 280
PARLIER UNIFIED SCH DIST CA1000287 California Transient Non-Community 280
U.S. GYPSUM CO CA1300517 California Non-Transient Non-Community 280
CALUMET WATER COMPANY CA1000357 California Community 280
LAKE ISABELLA KOA CAMPGROUND CA1500464 California Transient Non-Community 280
MARY IMMACULATE QUEEN SCHOOL CA1600012 California Transient Non-Community 280
PEPPERMINT CREEK MHP CA5500116 California Community 280
HORNBROOK C.S.D. CA4700513 California Community 280
CASTLE CITY MHP CA3110033 California Community 280
R&K WEIMAN MHP TX1012019 California Community 279
CENTRAL VALLEY EGGS, LLC CA1504006 California Non-Transient Non-Community 279
BADGER HILL ESTATES CA5400710 California Community 278
DELTA SHORES RESORT CA3400394 California Non-Transient Non-Community 278