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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
SCHOEPE SCOUT RESERVATION AT LOST VALLEY CA3701299 California Transient Non-Community 2,500
PATTON STATE HOSPITAL INACTIVATED 100709 CA3610852 California Community 2,500
DESERT VIEW CWD CA3610116 California Community 2,500
METRO AIR PARK WATER SYSTEM CA3400473 California Non-Transient Non-Community 2,500
RIVER BEND PARK CA3400298 California Transient Non-Community 2,500
AGATE BAY WATER COMPANY CA3110012 California Community 2,500
ROCKY POINT SRA MILLERTON CA2010301 California Transient Non-Community 2,500
VALLEY CHILDREN'S HOSPITAL CA2000275 California Non-Transient Non-Community 2,500
PARK WATER CO SYS NO 15 CA1910114 California Community 2,500
UNION PACIFIC RAILROAD CA1900016 California Transient Non-Community 2,500
ERSKINE CREEK WC CA1510009 California Community 2,500
BEAR PATCH ENTERPRISES WATER CA1502599 California Transient Non-Community 2,500
TWO (2) JAYS CA1502203 California Transient Non-Community 2,500
GREENFIELD JR. BASEBALL ASSOCIATION CA1502108 California Transient Non-Community 2,500
EL DORADO IRRIGATION DISTRICT CA0910005 California Community 2,500
CHICO CHRISTIAN SCHOOL CA0400076 California Transient Non-Community 2,500
BOLINAS COMMUNITY PUD CA2110005 California Community 2,483
VALLEY OF ENCHANTMENT MWC CA3610051 California Community 2,471
CEDARPINES PARK MWC CA3610011 California Community 2,458
FRESNO COUNTY WATER WORKS CA1010012 California Community 2,454
WESTERN DIGITAL TECHNOLOGIES, INC. CA4300791 California Non-Transient Non-Community 2,439
AWA - CAMANCHE VILLAGE CA0310021 California Community 2,402
TERWILLIGER ASSOCIATION CA3301146 California Transient Non-Community 2,401
METROPOLITAN STATE HOSPITAL CA7300205 California Community 2,400
TERRACE WATER COMPANY CA3610048 California Community 2,400
RILEY'S FARM CA3601147 California Transient Non-Community 2,400
SOUTHERN CALIF WATER CO CA3310062 California Community 2,400
FRANK D. LANTERMAN STATE HOSPITAL CA1900538 California Transient Non-Community 2,400
CLM - RICHBAR PICNIC & CAMPGROUND CA1502574 California Transient Non-Community 2,400
METROPOLITAN STATE HOSPITAL CA0000205 California Community 2,400
TWAIN HARTE COMMUNITY SERVICES DISTRICT CA5510005 California Community 2,378
LOST HILLS UTILITY DISTRICT CA1510046 California Community 2,370
CLEARLAKE OAKS COUNTY WATER DISTRICT CA1710001 California Community 2,359
UCD MEDICAL CENTER CA3400423 California Transient Non-Community 2,340
SAN JUAN BAUTISTA, CITY OF CA3510002 California Community 2,335
LITTLE BEAR WATER COMPANY CA2710016 California Community 2,327
FOLSOM STATE PRISON CA0000101 California Community 2,327
TRINITY CO. W.W. DIST #1 CA5310002 California Community 2,324
CLAWA CA3610114 California Community 2,320
ELK GROVE HIGH SCHOOL CA3400247 California Transient Non-Community 2,300
EISENHOWER MEDICAL CENTER(WATER) CA3301238 California Non-Transient Non-Community 2,300
ELSINORE VALLEY MWD - TEMESCAL CA3310015 California Community 2,294
SKI ISLAND/MARINERS POINT NRAS CA4500039 California Transient Non-Community 2,260
ELSINORE WD - COUNTRY CLUB CA3310013 California Community 2,256
MOUNTAIN GATE C.S.D. CA4510002 California Community 2,227
SELMA HIGH SCHOOL CA1000367 California Non-Transient Non-Community 2,225
GRANT JOINT UNION H.S.D. CA3400277 California Transient Non-Community 2,215
SANTA NELLA COUNTY WATER DISTRICT CA2410018 California Community 2,211
BULLARD'S BAR REC FAC WTR SYS CA5800814 California Transient Non-Community 2,208
JEDEDIAH SMITH STATE PARK CA0810303 California Transient Non-Community 2,208