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 |
|---|---|---|---|---|
| AV JOINT UNIF HI SCH & DISTRICT OFFICES | CA1900795 | California | Non-Transient Non-Community | 3,000 |
| YOSEMITE NPS - VERNAL FALLS | CA2210518 | California | Transient Non-Community | 3,000 |
| SWEETWATER SPRINGS CWD - MONTE RIO | CA4910028 | California | Community | 3,000 |
| SANTA CLARA VALLEY MEDICAL CENTER | CA4300833 | California | Non-Transient Non-Community | 3,000 |
| CALTRANS-BORON REST STOP WATER SYSTEM | CA1502422 | California | Transient Non-Community | 3,000 |
| SMITH FORKS WATER SYSTEM | CA5601725 | California | Transient Non-Community | 3,000 |
| KNOTT S BERRY FARM | CA3000734 | California | Non-Transient Non-Community | 3,000 |
| WILD WATER ADVENTURES | CA1000389 | California | Transient Non-Community | 3,000 |
| EL CAMINO HOSPITAL | CA4300816 | California | Non-Transient Non-Community | 3,000 |
| CASILLAS WATER SYSTEM | CA5403047 | California | Transient Non-Community | 3,000 |
| Soboba | 090600151 | California | Community | 3,000 |
| GREEN VALLEY MWC | CA3610023 | California | Community | 2,993 |
| CCI - TEHACHAPI | CA1510800 | California | Community | 2,993 |
| PARLIER, CITY OF | CA1010036 | California | Community | 2,990 |
| AROMAS WATER DISTRICT | CA3510004 | California | Community | 2,988 |
| FORT BLISS BIGGS ARMY AIRFIELD | TX0710078 | California | Community | 2,961 |
| FRESNO COUNTY WATER WORKS | CA1010008 | California | Community | 2,958 |
| HERITAGE RANCH CSD | CA4010012 | California | Community | 2,956 |
| NPS-GRANT GROVE | CA1010501 | California | Community | 2,950 |
| Quechan Casino Resort | 090400679 | California | Non-Transient Non-Community | 2,950 |
| NPS-WOLVERTON | CA5410503 | California | Community | 2,940 |
| NPS-ASH MOUNTAIN | CA5410513 | California | Community | 2,930 |
| SALINAS VALLEY STATE PRISON | CA2710851 | California | Community | 2,930 |
| NICE MUTUAL WATER COMPANY | CA1710008 | California | Community | 2,929 |
| CAMPOS VERDES JR HIGH SCHOOL | CA3400258 | California | Non-Transient Non-Community | 2,926 |
| NORTHGATE 880 [SWS] | CA3400173 | California | Non-Transient Non-Community | 2,926 |
| CUYAMACA WATER DISTRICT | CA3700074 | California | Community | 2,923 |
| SUTTER COMMUNITY S.D. | CA5110007 | California | Community | 2,904 |
| RANCHO MONTICELLO RESORT | CA2800595 | California | Community | 2,900 |
| NPS-PINEWOOD WATER SYSTEM | CA5410520 | California | Transient Non-Community | 2,900 |
| NPS-SHEEP CREEK | CA1010500 | California | Transient Non-Community | 2,900 |
| PALO ALTO PARK MUTUAL WATER COMPANY | CA4110020 | California | Community | 2,900 |
| NORTHEAST GARDENS WATER CO | CA1010022 | California | Community | 2,870 |
| PLACER CWA - NEWCASTLE | CA3110016 | California | Community | 2,850 |
| JUNE LAKE PUD - DOWN CANYON | CA2610004 | California | Community | 2,810 |
| CITY OF VALLEJO-LAKES SYSTEM | CA4810021 | California | Community | 2,800 |
| RIO COSUMNES CORRECTIONAL CENTER [SWS] | CA3400229 | California | Community | 2,800 |
| LAND PROJECTS MUTUAL WATER CO. | CA1910246 | California | Community | 2,800 |
| LERDO SHERIFF S FACILITY | CA1502320 | California | Community | 2,800 |
| SEASIDE MUNICIPAL WATER SYSTEM | CA2710018 | California | Community | 2,800 |
| LAKE SHASTINA C.S.D | CA4710013 | California | Community | 2,790 |
| O'CONNOR TRACT CO-OPERATIVE WATER CO. | CA4110019 | California | Community | 2,789 |
| TOWN OF YOUNTVILLE | CA2810007 | California | Community | 2,787 |
| ARBUCKLE PUBLIC UTILITY DISTRICT | CA0610001 | California | Community | 2,778 |
| PIXLEY PUBLIC UTIL DIST | CA5410009 | California | Community | 2,772 |
| NORTH YUBA WATER DISTRICT | CA5810006 | California | Community | 2,772 |
| JUNE LAKE PUD VILLAGE | CA2610002 | California | Community | 2,763 |
| RIVERDALE PUBLIC UTILITY DISTRICT | CA1010028 | California | Community | 2,756 |
| FORT HUNTER LIGGETT | CA2710702 | California | Community | 2,753 |
| HALF MOON BAY STATE BEACH | CA4110301 | California | Transient Non-Community | 2,739 |