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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
USMC NEBO (BARSTOW) CA3610701 California Community 1,126
BELLARMINE COLLEGE PREP SCHOOL CA4300806 California Transient Non-Community 1,125
TEMECULA/VAIL LAKE KOA CA3303084 California Non-Transient Non-Community 1,125
SONORA MEADOWS MUTUAL WTR CO CA5510023 California Community 1,123
BIG BASIN WATER COMPANY CA4410001 California Community 1,120
MID - MC SWAIN REC AREA CA2209065 California Transient Non-Community 1,119
BDVWA - GOAT MOUNTAIN ID CA3610060 California Community 1,118
FCSA 34 - MILLERTON NEW TOWN CA1000484 California Community 1,117
WILD WINGS GOLF COMMUNITY CA5710011 California Community 1,115
CWS SOUTHLAKE SYSTEM CA1510039 California Community 1,112
INYO COUNTY PWD - INDEPENDENCE CA1410008 California Community 1,108
BAKMAN WATER-ROLLING HILLS CA2010009 California Community 1,107
CAL AM WATER COMPANY - HIDDEN HILLS CA2710022 California Community 1,106
NORTH EDWARDS WD CA1510052 California Community 1,105
FAMILY MARKET WATER SYSTEM CA3901328 California Transient Non-Community 1,105
AIR NATIONAL GUARD CA1010700 California Non-Transient Non-Community 1,100
AGNEW STATE HOSPITAL - WEST CA4300708 California Community 1,100
HAPPY CAMP C.S.D. CA4710012 California Community 1,100
AGNEW STATE HOSPITAL - EAST CA4300709 California Community 1,100
WAL-MART DISTRIB. CTR./ECO RESOURCES CA5210006 California Non-Transient Non-Community 1,100
EVERGREEN UNION SCHOOL DISTRICT CA5200513 California Non-Transient Non-Community 1,100
CITY OF MODESTO - SOUTH TURLOCK CA5010023 California Community 1,099
GLEN IVY HOT SPRINGS CA3301294 California Community 1,087
SAN JOAQUIN COUNTY-RAYMUS VILLAGE CA3910014 California Community 1,086
SLO CSA NO. 16 - SHANDON CA4010028 California Community 1,085
WATERFORD-RIVER POINTE CA5010042 California Community 1,079
HOPLAND PUBLIC UTILITY DISTRICT CA2310010 California Community 1,076
La Jolla Eastern 090605007 California Community 1,076
CALIFORNIA INSTITUTION FOR WOM CA0000111 California Community 1,075
RECHE CANYON MOBILE ESTATES CA3600402 California Community 1,075
CALIFORNIA INSTITUTION CA7300111 California Community 1,075
TRINIDAD, CITY OF CA1210018 California Community 1,072
BARTON FLATS WATER SYSTEM CA3601048 California Community 1,070
BODEGA BAY PUBLIC UTILITY DISTRICT CA4910021 California Community 1,069
FOREST LAKES MWC CA4410016 California Community 1,067
RIDGECREST HEIGHTS WATER CO. CA1510034 California Community 1,066
NATIONAL AMERICAN CORP. LP-LAKE MINDEN CA5100117 California Transient Non-Community 1,065
CAL AM WATER COMPANY - TORO CA2710021 California Community 1,065
WESMILTON WTR SYSTEM CA1010045 California Community 1,060
PLYMOUTH, CITY OF CA0310004 California Community 1,060
TAYLOR FARMS RETAIL, INC. CA3500913 California Non-Transient Non-Community 1,055
R-WILD HORSE RANCH CA5200864 California Community 1,055
DEL NORTE COAST STATE PARK CA0810300 California Transient Non-Community 1,051
MONTE VISTA CHRISTIAN SCHOOL CA4400754 California Community 1,051
MARYSVILLE HIGH SCHOOL CA5800841 California Non-Transient Non-Community 1,050
49ER WATER COMPANY AZ0410053 California Community 1,050
SUNDALE MUTUAL WATER COMPANY A, B CA1900563 California Community 1,050
HIGHWAY 156 WATER SYSTEM #3 CA2700600 California Community 1,048
FALLSVALE SERVICE COMPANY CA3610021 California Community 1,046
LOS RIOS RANCHO WATER SYSTEM CA3600154 California Non-Transient Non-Community 1,046