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
RIO DELL, CITY OF CA1210012 California Community 3,300
GIBSON RANCH COUNTY PARK CA3400297 California Transient Non-Community 3,300
LUKINS BROTHERS WATER COMPANY CA0910007 California Community 3,277
RINCON DEL DIABLO MWD (ID-A) CA3710044 California Community 3,275
DEUEL VOCATIONAL INSTITUTION CA3910800 California Community 3,271
LAKE DON PEDRO CSD CA5510008 California Community 3,240
Arizona Village 090400300 California Community 3,211
PROVIDENCE MTNS SRA CA3610300 California Transient Non-Community 3,203
BIG SUR STATE PARK CA2701276 California Transient Non-Community 3,200
MURPHY RANCH MUTUAL WTR C CA1910093 California Community 3,200
RANCHO LOS AMIGOS HOSPITAL CA1900679 California Non-Transient Non-Community 3,200
BLM-BRICEBURG WATER SYSTEM CA2210933 California Transient Non-Community 3,196
YUBA CITY GROUNDWATER REGION 1 CA5115001 California Community 3,185
VALLEY STATE PRISON CA2010801 California Community 3,173
MADERA CO MD10A-MADERA RANCHOS CA2010008 California Community 3,172
CWSC OAK HILLS CA2710019 California Community 3,161
BURNEY WATER DISTRICT CA4510003 California Community 3,154
Buena Vue Casino 090605117 California Non-Transient Non-Community 3,150
PLACER CWA - COLFAX CA3110006 California Community 3,149
CITY OF NEVADA CITY CA2910002 California Community 3,148
AMARILLO MUTUAL WATER COMPANY CA1910002 California Community 3,134
HOME GARDENS COUNTY WD CA3310018 California Community 3,095
SO CA WATER CO-VICTORVILLE 4 CA3610106 California Community 3,076
SHASTA C.S.D. CA4510013 California Community 3,069
MARYGOLD MWC CA3610028 California Community 3,055
MADERA CO CSA 22C GUNNER RANCH CA2010019 California Community 3,050
LITTLEROCK CREEK IRRIGATION DIST. CA1910064 California Community 3,040
HIGH DESERT DETENTION CENTER CA3601182 California Community 3,035
PRUNEDALE CENTRAL CSA NO.74 CA2710015 California Community 3,031
CSP - BIG BASIN STATE PARK CA4410301 California Community 3,029
MODOC COUNTY FAIR CA2500704 California Transient Non-Community 3,025
TWIN LAKES STATE BEACH CA4410312 California Transient Non-Community 3,013
PETITE PANTRY CA1400147 California Transient Non-Community 3,012
VICTORY RANCH CA3301731 California Transient Non-Community 3,004
Avi Casino 090400302 California Community 3,001
DEUEL VOCATIONAL INSTITUTION CA7300122 California Community 3,000
WESTINGHOUSE ELECTRIC CORP CA4300788 California Transient Non-Community 3,000
GUADALUPE MUNICIPAL IMPROVEMEN CA4100572 California Transient Non-Community 3,000
STATE OF CA DEPT OF PARKS CA3301862 California Transient Non-Community 3,000
SOLEDAD STATE CORRECTIONAL FAC CA2701177 California Community 3,000
SALINAS VALLEY FAIR GROUNDS CA2701722 California Transient Non-Community 3,000
ROCKYS RESTAURANT CA3901247 California Transient Non-Community 3,000
LOMA LINDA UNIVERSITY CA3301394 California Transient Non-Community 3,000
HANFORD JOINT UNION H.S. EAST CAMPUS CA1600250 California Non-Transient Non-Community 3,000
LAKE PARDEE REC AREA CA0300038 California Transient Non-Community 3,000
HANFORD ICE COMPANY CA1600283 California Transient Non-Community 3,000
FLEET RESERVE ASSOCIATION CA1600273 California Transient Non-Community 3,000
AL CONTRERRAS CA1900082 California Transient Non-Community 3,000
MESA MARIN RACEWAY CA1502471 California Transient Non-Community 3,000
QUARTZ HILLS HIGH SCHOOL CA1900003 California Non-Transient Non-Community 3,000