Browse Water Systems
20,002 public water systems in CA.
Public Water Systems Database
Browse 20,002 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 |
|---|---|---|---|---|
| SANTA BARBARA COUNTY | CA4200819 | California | Transient Non-Community | 5,000 |
| IN SHAPE HEALTH CLUB - WEST LANE | CA3901087 | California | Transient Non-Community | 5,000 |
| FOREST LAKE GOLF COURSE | CA3901045 | California | Transient Non-Community | 5,000 |
| FIRESIDE RESTAURANT | CA1600279 | California | Transient Non-Community | 5,000 |
| FAMOSO RACEWAY, SMOKERS INC. | CA1503215 | California | Transient Non-Community | 5,000 |
| KERN VALLEY STATE PRISON | CA1510802 | California | Community | 5,000 |
| STATE OF CALIF CALTRANS | CA1300599 | California | Transient Non-Community | 5,000 |
| AMADOR COUNTY FAIRGROUNDS | CA0300044 | California | Transient Non-Community | 5,000 |
| Chukchansi Gold Resort | 090605163 | California | Non-Transient Non-Community | 5,000 |
| UNIVERSITY OF THE PACIFIC | CA3910021 | California | Non-Transient Non-Community | 4,975 |
| CITY OF GRASS VALLEY | CA2910001 | California | Community | 4,947 |
| AWA, TANNER | CA0310003 | California | Community | 4,940 |
| SAN BERNARDINO MUN WAT UT CORP | CA3610040 | California | Community | 4,929 |
| STALLION SPRINGS CSD | CA1510025 | California | Community | 4,910 |
| LA CUMBRE MUTUAL WATER CO | CA4210024 | California | Community | 4,861 |
| DEL PASO MANOR COUNTY WATER DI | CA3410007 | California | Community | 4,854 |
| LAS FLORES WATER CO. | CA1910061 | California | Community | 4,847 |
| BLUE LAKE SPRINGS MUT WTR | CA0510009 | California | Community | 4,841 |
| LOS ANGELES CWWD 37-ACTON | CA1910248 | California | Community | 4,805 |
| CALIPATRIA STATE PRISON | CA1310800 | California | Community | 4,800 |
| Rolling Hills Casino | 090600052 | California | Non-Transient Non-Community | 4,782 |
| UNION PUBLIC UTILITY DISTRICT | CA0510001 | California | Community | 4,774 |
| LAKEPORT, CITY OF | CA1710004 | California | Community | 4,762 |
| FRESNO COUNTY WATER WORKS | CA1010011 | California | Community | 4,753 |
| MOJAVE PUD | CA1510014 | California | Community | 4,699 |
| CAL TRANS - GAVIOTA RSR | CA4210900 | California | Transient Non-Community | 4,690 |
| GOLDEN STATE WATER CO.-CLEARLAKE SYSTEM | CA1710002 | California | Community | 4,644 |
| VALLEY VIEW MUTUAL WATER CO. | CA1910165 | California | Community | 4,613 |
| COACHELLA VWD: I.D. NO. 8 | CA3310048 | California | Community | 4,600 |
| IVANHOE PUBLIC UTILITY DIST | CA5410019 | California | Community | 4,580 |
| CHANNEL ISLANDS BEACH CSD | CA5610039 | California | Community | 4,560 |
| CAL AM - BASS LAKE | CA2010003 | California | Community | 4,527 |
| GOLDEN STATE WATER COMPANY - NIPOMO | CA4010018 | California | Community | 4,506 |
| CALIFORNIA INSTITUTION FOR MEN | CA7300121 | California | Community | 4,500 |
| PEPPERY BAR AND GRILL, THE | CA5500194 | California | Transient Non-Community | 4,500 |
| EL CAPITAN STATE BEACH PARK | CA4200664 | California | Non-Transient Non-Community | 4,500 |
| NORTH PERRIS WATER SYSTEM | CA3310082 | California | Community | 4,500 |
| LAKE ELSINORE-CITY | CA3310045 | California | Community | 4,500 |
| POLVADERO GOLF COURSE | CA1000222 | California | Transient Non-Community | 4,500 |
| CALIFORNIA INSTITUTION FOR MEN | CA0000121 | California | Community | 4,500 |
| SO CAL WC - LENWOOD | CA3610035 | California | Community | 4,496 |
| NORTHSTAR CSD - MARTIS VALLEY | CA3110051 | California | Community | 4,493 |
| PLACER COUNTY WATER AGENCY | CA3110007 | California | Community | 4,456 |
| PALOMAR OBSERVATORY | CA3702236 | California | Community | 4,416 |
| Chemehuevi Water | 090600125 | California | Community | 4,400 |
| DEPARTMENT OF TRANSPORTATION | CA5000134 | California | Transient Non-Community | 4,375 |
| SUBURBAN WATER SYSTEMS - SATIVA | CA1910147 | California | Community | 4,363 |
| MT. KONOCTI MUTUAL WATER COMPANY | CA1710014 | California | Community | 4,360 |
| SLVWD - FELTON WATER SYSTEM | CA4410002 | California | Community | 4,340 |
| CALIFORNIA REHABILITATION CENTER - NORCO | CA3310800 | California | Community | 4,300 |