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 |
|---|---|---|---|---|
| CDPR-MCCONNELL | CA2410301 | California | Transient Non-Community | 286 |
| MCCLURE BOAT CLUB, INC. | CA2210905 | California | Community | 286 |
| CWS COUNTRYWOOD SYSTEM | CA1500408 | California | Community | 285 |
| MALAGA SCHOOL | CA1000404 | California | Non-Transient Non-Community | 285 |
| MARIPOSA PINES MUTUAL | CA2210906 | California | Community | 284 |
| CWS-ONYX WATER SYSTEM | CA1510043 | California | Community | 284 |
| MERQUIN ELEMENTARY SCHOOL | CA2400064 | California | Non-Transient Non-Community | 284 |
| CAMP NAVARRO | CA2300873 | California | Transient Non-Community | 284 |
| HARRIS RD WS #10 | CA2702704 | California | Non-Transient Non-Community | 284 |
| SALMON HARBOR RESORT | CA0800536 | California | Transient Non-Community | 284 |
| LICK OBSERVATORY-UCSC | CA4300909 | California | Community | 284 |
| DEAN CREEK RESORT | CA1200637 | California | Transient Non-Community | 283 |
| MAJOR VISTA WATER | CA5700614 | California | Community | 282 |
| BLUEBELL VALLEY MWC | CA5500040 | California | Community | 282 |
| CYPRESS ACRES | CA0400152 | California | Non-Transient Non-Community | 282 |
| ALEXANDER VALLEY RV PARK & CAMPGROUND | CA4901337 | California | Transient Non-Community | 281 |
| WOOD CAMP - WATER SYSTEM | CA2900619 | California | Transient Non-Community | 281 |
| TOWN OF SUNOL - SFPUC | CA0110012 | California | Community | 281 |
| HAGAMAN COUNTY PARK | CA2400089 | California | Transient Non-Community | 280 |
| GALT M H ESTATES | CA3400126 | California | Community | 280 |
| RICHFIELD ELEMENTARY SCHOOL | CA5200565 | California | Non-Transient Non-Community | 280 |
| IMPERIAL MANOR MOBILEHOME COMMUNITY | CA3400190 | California | Community | 280 |
| BALTIMORE AIRCOIIL COMPANY | CA2000655 | California | Non-Transient Non-Community | 280 |
| SKYLAKE YOSEMITE CAMP | CA2000562 | California | Transient Non-Community | 280 |
| ARCOHE ELEM SCHOOL - EAST CAMPUS | CA3400442 | California | Non-Transient Non-Community | 280 |
| HAYDEN FLAT CAMPGROUND F | CA5304004 | California | Transient Non-Community | 280 |
| SIERRA ROAD IMPROVEMENT ASSOCIATION INC | CA4300546 | California | Community | 280 |
| GREENHORN CREEK CSD | CA3200188 | California | Community | 280 |
| BLACK OAK GOLF COURSE | CA3103205 | California | Transient Non-Community | 280 |
| GLENBROOK MOBILE ESTATES | CA3100046 | California | Community | 280 |
| OWENS-BROCKWAY GLASS CONTAINER INC | CA3900825 | California | Non-Transient Non-Community | 280 |
| CAL FIRE-EEL RIVER CONSERVATION CAMP | CA1210800 | California | Non-Transient Non-Community | 280 |
| SHEPHERD OF THE MOUNTAINS LUTHERAN CHURC | CA1503558 | California | Transient Non-Community | 280 |
| FRANCIS FERRARO | CA1000009 | California | Community | 280 |
| FRESNO COUNTY WATERWORKS | CA1000033 | California | Community | 280 |
| GENERAL SHAFTER SCHOOL | CA1502094 | California | Non-Transient Non-Community | 280 |
| HAT CREEK HEREFORD RANCH RV PARK | CA4500309 | California | Transient Non-Community | 280 |
| WOODSIDE RV PARK | CA2300644 | California | Community | 280 |
| PARLIER UNIFIED SCH DIST | CA1000287 | California | Transient Non-Community | 280 |
| U.S. GYPSUM CO | CA1300517 | California | Non-Transient Non-Community | 280 |
| CALUMET WATER COMPANY | CA1000357 | California | Community | 280 |
| LAKE ISABELLA KOA CAMPGROUND | CA1500464 | California | Transient Non-Community | 280 |
| MARY IMMACULATE QUEEN SCHOOL | CA1600012 | California | Transient Non-Community | 280 |
| PEPPERMINT CREEK MHP | CA5500116 | California | Community | 280 |
| HORNBROOK C.S.D. | CA4700513 | California | Community | 280 |
| CASTLE CITY MHP | CA3110033 | California | Community | 280 |
| R&K WEIMAN MHP | TX1012019 | California | Community | 279 |
| CENTRAL VALLEY EGGS, LLC | CA1504006 | California | Non-Transient Non-Community | 279 |
| BADGER HILL ESTATES | CA5400710 | California | Community | 278 |
| DELTA SHORES RESORT | CA3400394 | California | Non-Transient Non-Community | 278 |