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.
| 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 |