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
GSA TECATE PORT OF ENTRY CA3710048 California Non-Transient Non-Community 400
Campo Church Road System (HUD Homes) 090605045 California Community 400
BUTTE CREEK ESTATES MUTUAL WATER CO CA0400007 California Community 399
PALM SPRINGS CREST CA3310081 California Community 399
GRAVENSTEIN SCHOOL DISTRICT-GRAVENSTEIN CA4900708 California Non-Transient Non-Community 398
WESTSIDE SCHOOL CA1000290 California Community 398
CHAMISAL WA CA2701659 California Non-Transient Non-Community 396
SAN BERNARDINO CO WATER WORKS CA3600250 California Community 396
ORICK C.S.D. CA1200701 California Community 396
FCSA 39 - A AND B CA1000471 California Community 395
BUCHER WATER COMPANY CA4901277 California Non-Transient Non-Community 394
WINTERHAVEN COUNTY WATER DISTRICT CA1300009 California Community 394
BLYTHE - HIDDEN BEACHES CA3301630 California Community 393
STOCKDALE RANCHOS MUTUAL WATER CO CA1500557 California Community 393
FAIRVIEW SCHOOL CA1100525 California Transient Non-Community 391
BIG MEADOWS CAMPGROUND CA0500044 California Transient Non-Community 390
UNITED UTL-STRAWBERRY AZ0404019 California Community 390
JOHNSON RANCHES, INC CA1200644 California Community 390
FOUNTAIN OF YOUTH CA1300545 California Community 390
MORNING STAR PKG. CO.-WMS. CA0605002 California Non-Transient Non-Community 390
STANISLAUS UNION SCHOOL DIST CA5000249 California Non-Transient Non-Community 390
SPRING CREEK TRACT ASSOCIATION CA0900506 California Transient Non-Community 389
LAKESIDE ELEMENTARY SCHOOL CA1600013 California Non-Transient Non-Community 388
MOUNTAIN VALE VILLAGE MHP NH0513100 California Community 388
COAST SPRINGS - CAL. WATER SERVICE (PUC) CA2110007 California Community 388
ALTA ELEMENTARY SCHOOL CA1000180 California Non-Transient Non-Community 387
IVANHOE ELEMENTARY SCHOOL CA5400845 California Transient Non-Community 387
VALLEY ESTATES POA, INC. CA1500478 California Community 386
CAMP ROBERTS - CALIFORNIA NATIONAL GUARD CA2710705 California Non-Transient Non-Community 385
CHATOM SCHOOL (EH) CA5000101 California Non-Transient Non-Community 385
FOREST SPRINGS CA4400608 California Community 385
ARDAGH GLASS, INC CA2000660 California Non-Transient Non-Community 384
SOUTH KAWEAH MUTUAL WATER COMPANY CA5400754 California Community 384
PLAVADA COMMUNITY ASSOCIATION CA2910011 California Community 384
TEVISTON COMMUNITY SERVICES DISTRICT CA5400641 California Community 383
COLUSA CO. WWD #2 - PRINCETON CA0600013 California Community 382
STRAWBERRY LODGE MWC CA3600301 California Community 381
COLDWATER CAMPGROUND CA2600604 California Transient Non-Community 380
ELK COUNTY WATER DISTRICT CA2300514 California Community 380
BELLEVUE UNION SCH DIST-BELLEVUE SCHOOL CA4900693 California Non-Transient Non-Community 380
BERKELEY TUOLUMNE CAMP CA5500136 California Transient Non-Community 380
URSULINE HIGH SCHOOL CA4900773 California Transient Non-Community 380
WESTERN ACRES MUTUAL WATER COMPANY CA1503475 California Community 380
WILLOW PARK MARINA CA0707507 California Community 380
Torres-Martinez Clinic 090605130 California Community 379
SAN ANDREAS MUTUAL WATER CO CA4400558 California Community 378
M/V MASCO ENDEAVOR AK2249213 California Non-Transient Non-Community 378
LINWOOD SCHOOL CA5400851 California Non-Transient Non-Community 378
WP&A - KING WATER SYSTEM CA1503275 California Non-Transient Non-Community 376
NICHOLS FARMS CA1600602 California Non-Transient Non-Community 375