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
MUSD-EAST UNION HIGH SCHOOL CA3901160 California Non-Transient Non-Community 500
TRACT 92 C.S.D. CA5403004 California Community 500
PINE MARTIN C G CA0202568 California Transient Non-Community 500
ESCALON UNIFIED SCHOOL DIST CA3901166 California Non-Transient Non-Community 500
ARROYO SECO REC WS CA2701166 California Transient Non-Community 500
PLACER ELEMENTARY SCHOOL CA3100070 California Non-Transient Non-Community 500
ANNETT'S MONO VILLAGE CA2600529 California Transient Non-Community 500
SONOMA TRANSFER STATION CA4901047 California Transient Non-Community 500
CAMPO HILLS-COUNTY PUBLIC WORKS WASTEWTR CA3710047 California Community 500
FRANKLIN ELEMENTARY SCHOOL CA3100071 California Non-Transient Non-Community 500
UOP CA3901170 California Community 500
SIERRA TAHOE GRANDVIEW CA0900658 California Transient Non-Community 500
HUGHSON UNION SD - HUGHSON ELEMENTARY SC CA5000127 California Non-Transient Non-Community 500
AMBLER PARK WATER SUPPLY CA2700504 California Community 500
VALLEY PACIFIC PETROLEUM SERVICES CA4200876 California Transient Non-Community 500
KIRKWOOD SUNRISE GRILL CA0202570 California Transient Non-Community 500
CAMP FAR WEST LAKE, SOUTH SIDE CA3103207 California Transient Non-Community 500
CALTRANS REST STOP CA3700021 California Transient Non-Community 500
HEARST MEMORIAL STATE BEACH CA4010301 California Transient Non-Community 500
MEMORIAL PARK CA2701113 California Transient Non-Community 500
CEDARVILLE COUNTY WATER DISTRI CA2500504 California Community 500
CUYAPAIPE/MT LAGUNA SYS CA3700028 California Transient Non-Community 500
FREMONT MEDICAL CENTER CA5100178 California Transient Non-Community 500
WILDERNESS GARDENS PRESERVE CA3700935 California Transient Non-Community 500
JEHOVAH'S WITNESS SIERRA VISTA CONG CA5000493 California Transient Non-Community 500
SUTTER MEDICAL CENTER OF SANTA ROSA CA4900836 California Non-Transient Non-Community 500
NACIMIENTO RIVER CAMP CA2701115 California Transient Non-Community 500
SANTA ROSA MEMORIAL HOSPITAL CA4900839 California Transient Non-Community 500
LANCASTER NATIONAL SOCCER CENTER CA1909645 California Transient Non-Community 500
NORTHRIDGE COUNTRY CLUB CA3400285 California Transient Non-Community 500
BURGER KING-WHITE CITY OR4194889 California Transient Non-Community 500
ST JOSEPH'S CHURCH CA5700528 California Transient Non-Community 500
FRICOT TRAINING ACADEMY CA0000613 California Community 500
WOODLAKE CONSERVATION CENTER CA0000609 California Community 500
WESTSIDE & CHERRY VALLEY RAILW CA5500169 California Transient Non-Community 500
CLM - SANDY FLAT CAMPGROUND CA1503203 California Transient Non-Community 500
QUICK CHECK AZ0415042 California Transient Non-Community 500
NORTH FORK ELEMENTARY SCHOOL CA2000612 California Non-Transient Non-Community 500
LINCOLN ELEMENTARY SCHOOL CA5100147 California Transient Non-Community 500
LINDCREST ELEMENTARY SCHOOL CA5100148 California Transient Non-Community 500
BURLINGAME HIGH SCHOOL CA4100569 California Non-Transient Non-Community 500
S M CO PARKS & REC DEPT CA4100568 California Transient Non-Community 500
CLINE CELLARS CA4901278 California Non-Transient Non-Community 500
SINGING HILLS RANCH CO CA3700048 California Non-Transient Non-Community 500
WILLIAMS MIGRANT CAMP CA0600014 California Non-Transient Non-Community 500
WALT'S TRUCK STOP CA2000646 California Transient Non-Community 500
HOLLISTER HILLS MOTORCYCLE PAR CA3500534 California Transient Non-Community 500
WRIGHT ELEMENTARY SCHOOL CA4900694 California Non-Transient Non-Community 500
HELWIG WINERY CA0300099 California Transient Non-Community 500
WESTHAVEN MWC CA1200585 California Community 500