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
MD 73 QUARTZ MOUNTAIN CA2000690 California Community 375
LAS DELTAS MUTUAL WATER COMPANY CA1000054 California Community 375
NICHOLS FARMS CA1600602 California Non-Transient Non-Community 375
PRAIRIE ELEMENTARY SCHOOL CA4500161 California Non-Transient Non-Community 375
BLUE & GOLD STAR MOBILE HOME CA4400770 California Community 375
CONWAY RANCH CA2600629 California Transient Non-Community 375
SOUTH FORK ESTATES CA5403003 California Community 375
Burns Brothers Inc. CA5200605 California Non-Transient Non-Community 375
TOWN & COUNTRY MOBILE VILLAGE CA4300723 California Community 375
SPIRIT MOUNTAIN UTILITY COMPANY NV0000221 California Community 375
BATES ELEMENTARY SCHOOL CA3400267 California Non-Transient Non-Community 375
PLACER COUNTY WATER AGENCY CA3110037 California Community 373
ANDERSON SPRINGS CSD CA1700502 California Community 373
GOLDEN STATE WATER MORONGO DELNORTE CA3600270 California Community 373
CALIFORNIAN MOBILE HOME PARK CA1900843 California Community 372
TRUE LEAF FARMS, LLC. CA3500917 California Non-Transient Non-Community 372
INTERSTATE 5 UTILITIES CO CA1500492 California Transient Non-Community 372
MODESTO CHRISTIAN SCHOOL CA5000206 California Transient Non-Community 370
SMILEY PARK COUNTRY CLUB CA3600260 California Community 370
LAKELAND WATER COMPANY CA1500363 California Community 370
BENBOW-DEL ORO W.C. CA1200671 California Community 370
OAK CREEK MOBILE HOME PARK CA2000775 California Community 370
CSP-WESTPORT STATE BEACH CA2310312 California Transient Non-Community 370
HUTTOPIA SIX SIGMA CAMPGROUND CA1700741 California Transient Non-Community 370
WESTPORT COUNTY WATER DISTRICT CA2300730 California Community 369
CALVARY CHAPEL CHRISTIAN CAMP CA3600595 California Transient Non-Community 369
STATE PARK SERVICE CA1200594 California Transient Non-Community 369
BURLINGTON CG-STATE PARKS CA1210324 California Transient Non-Community 368
CLAWA LAKE ARROWHEAD CREST EST CA3600143 California Community 368
SO CAL WATER CO VICTORVILLE 6 CA3600282 California Community 368
SAVIERS ROAD MUTUAL WATER CO CA5602115 California Community 368
AGUA FRIA MSC CA3600003 California Community 368
FOREST GLEN ESTATES MHP GA0350004 California Community 367
WILDHORSE CAFE WS CA2701172 California Non-Transient Non-Community 367
BLACK RASCAL WATER COMPANY CA2400046 California Community 367
USFS BAKER/DEADMAN CGD CA5500001 California Transient Non-Community 366
USFS/LASSEN HAT CREEK CAMPGRND CA4500024 California Transient Non-Community 365
NPS PRNS - FIVE BROOKS CA2110010 California Transient Non-Community 365
ENOS LANE PUBLIC UTILITY DISTRICT CA1500544 California Community 365
MOUNT DIABLO STATE PARK CA0710300 California Transient Non-Community 364
HEIGHTS MUTUAL WATER COMPANY CA4900612 California Community 363
CDPR FOUR RIVERS DISTRICT-BASALT CA2410303 California Transient Non-Community 363
HIDDEN PINES CAMPGROUND CA2300831 California Transient Non-Community 362
SANTA MARGARITA RANCH HEADQUARTERS CA4000842 California Non-Transient Non-Community 362
SIERRA VILLAGE MUTUAL WATER CO CA5500074 California Community 361
YOSEMITE RV RESORT CA2000587 California Transient Non-Community 361
HAVASU WC CA3610017 California Community 361
Havasu Water Company 090600202 California Community 361
USFS PINECREST REC AREA CA5500157 California Non-Transient Non-Community 361
MONTEREY MUSHROOMS CA4300941 California Non-Transient Non-Community 361