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
LEO CARRILLO STATE BEACH CA1900891 California Transient Non-Community 300
HOPE FOUNDATION/MORIAH HEIGHTS CA0300062 California Community 299
NORTH PEAK MUTUAL WATER COMPANY CA3701747 California Community 298
SAN PASQUAL ACADEMY CA3700968 California Community 298
NPS - MANZANAR CA1410511 California Transient Non-Community 298
Hidden Valley Development 090400689 California Transient Non-Community 298
RIVERVIEW TRAILER PARK-BIA CA3600364 California Community 298
LAKE MADRONE WATER DISTRICT CA0400014 California Community 297
HIDDEN VIEW HENSLEY LAKE CA2000195 California Transient Non-Community 297
DEL ORO WC - COUNTRY ESTATES DIST CA1500314 California Community 297
La Jolla Western 090605008 California Community 296
DON PEDRO REC AG:BLUE OAKS CA5500274 California Transient Non-Community 296
RANCHO CALIMESA MOBILE HOME PARK CA3301534 California Community 296
KOKANEE-STONEY POINT CAMPGRD CA5301111 California Transient Non-Community 295
ELEANOR ROOSEVELT COMM LEARNING CTR CA5403130 California Non-Transient Non-Community 295
STANFORD SIERRA CAMP CA0900507 California Transient Non-Community 295
MANZANITA ELEMENTARY SCHOOL CA0400063 California Non-Transient Non-Community 295
SKYLINE PARK CA4200616 California Community 295
KOKANEE & STONEY PT CAMPGROUND CA5300069 California Transient Non-Community 295
CANYON RV PARK CA3000759 California Non-Transient Non-Community 294
CWS - LAKELAND CA1510049 California Community 294
GOODRICH GRAND MOUNT AREA WATER WA5336881 California Transient Non-Community 293
FCWWD 42/ALLUVIAL & FANCHER CA1000078 California Community 291
RANCHERITOS #2 CA3601186 California Community 291
SID - ELMIRA CA4810011 California Community 290
LOUISIANA PACIFIC FIBERBOARD CA4500174 California Transient Non-Community 290
SCHELBY SCHOOL CA2400113 California Non-Transient Non-Community 290
AUBURN VALLEY COMMUNITY SERVICE DIS CA3100011 California Community 290
RANCHO DEL CAMPO WATER SYSTEM CA3700859 California Community 290
GRAN MUTUAL WATER CO CA0400008 California Community 290
SONOMA COUNTY CSA 41-FREESTONE CA4900549 California Community 290
MESQUITE MINES INC. CA1300643 California Non-Transient Non-Community 290
RAY BOYER CA0300015 California Transient Non-Community 290
AUTOCAMP-YOSEMITE CA2202036 California Transient Non-Community 290
KERN VALLEY COURTS COMPLEX CA1502756 California Non-Transient Non-Community 290
GOODRICH GRAND MOUND AREA WATER WA5328784 California Transient Non-Community 290
MORADA ESTATES PWS CA3900722 California Community 290
EASTERN SIERRA COLLEGE CENTER - BISHOP CA1400526 California Non-Transient Non-Community 290
GILL CREEK MUTUAL WATER COMPANY CA4900521 California Community 290
MOSS MOBILE MANOR CA3600397 California Community 290
GRENADA SANITARY DISTRICT CA4700523 California Community 289
ROUND VALLEY ELEMENTARY SCHOOL CA2300830 California Non-Transient Non-Community 289
GRAVENSTEIN SCHOOL DISTRICT-HILLCREST CA4900711 California Non-Transient Non-Community 289
MUSICK MEADOWS 2 CA1000061 California Non-Transient Non-Community 289
SIERRA OUTDOOR SCHOOL CA5500171 California Non-Transient Non-Community 289
CARMET BY THE SEA WATER COMPANY CA4900578 California Community 288
ANGELS CAMP RV/CAMPING RESORT CA0500082 California Community 288
OAKHURST CHRISTIAN CONF CENTER CA2000821 California Transient Non-Community 288
OID #51 - SUNSET OAKS #10 CA5000317 California Community 287
BELMONT TERRACE MUTUAL WATER COMPANY CA4900558 California Community 287