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 |
|---|---|---|---|---|
| CSP - RANCHO DEL OSO | CA4410306 | California | Transient Non-Community | 669 |
| CAL AM - WALNUT GROVE | CA3410047 | California | Community | 667 |
| BRANDEIS BARDIN INSTITUTE | CA5603301 | California | Community | 665 |
| SHELL OIL PRODUCTS US | CA1502187 | California | Non-Transient Non-Community | 665 |
| EAST WOOD FARMS CWU | CA3600100 | California | Community | 665 |
| SONOMA VILLAGE | CA3301464 | California | Transient Non-Community | 663 |
| WHISKEYTOWN NRA-WHISKEY CREEK | CA4510504 | California | Transient Non-Community | 662 |
| CENTER WATER CO | CA3600070 | California | Community | 662 |
| KELLY'S MARKET | CA3601109 | California | Transient Non-Community | 660 |
| EL DORADO MUTUAL WATER CO. | CA1900803 | California | Community | 660 |
| MINERAL KING SCHOOL | CA5400870 | California | Transient Non-Community | 657 |
| DEL ORO TRAVER DISTRICT | CA5400553 | California | Community | 657 |
| LILY OF THE VALLEY MOBILE VILLAGE | CA1900913 | California | Community | 657 |
| GASQUET C.S.D. | CA0800555 | California | Community | 657 |
| CEDAR LODGE | CA2210900 | California | Community | 656 |
| RUSH RANCH OPEN SPACE | CA4810035 | California | Transient Non-Community | 656 |
| PRUNEDALE SCHOOL WS | CA2700705 | California | Non-Transient Non-Community | 655 |
| PLACER CSA - SHERIDAN | CA3110048 | California | Community | 653 |
| TOKAY PARK WATER CO | CA3400172 | California | Community | 653 |
| CDPR FOUR RIVERS DISTRICT-SAN LUIS CREEK | CA2410304 | California | Transient Non-Community | 653 |
| SAN ANTONIO LAKE PARK SOUTH WS | CA2701184 | California | Transient Non-Community | 653 |
| DOMAINE CARNEROS | CA2801011 | California | Non-Transient Non-Community | 652 |
| US ARMY PREVENTIVE MED ACTVTY | CA3910700 | California | Community | 651 |
| CRESTWOOD SCHOOL | CA5400857 | California | Non-Transient Non-Community | 651 |
| FRANKLIN ELEMENTARY SCHOOL | CA3400248 | California | Non-Transient Non-Community | 650 |
| TEMPERANCE-KUTNER SCHOOL | CA1000197 | California | Transient Non-Community | 650 |
| CLOVIS M COLE SCHOOL | CA1000107 | California | Transient Non-Community | 650 |
| CAMPBELL SOUP | CA5000205 | California | Non-Transient Non-Community | 650 |
| BARRY ELEMENTARY SCHOOL | CA5100149 | California | Non-Transient Non-Community | 650 |
| WOODVILLE FARM LABOR CENTER | CA5400792 | California | Community | 650 |
| Bear River - Tish Non Village | 090605119 | California | Community | 650 |
| STANISLAUS COUNTY ADMIN BLDG | CA5000377 | California | Transient Non-Community | 650 |
| Mesquite Creek | 090400301 | California | Community | 650 |
| COASTAL CHRISTIAN SCHOOL | CA4000844 | California | Non-Transient Non-Community | 650 |
| SHASTA PAPER COMPANY | CA4500222 | California | Non-Transient Non-Community | 650 |
| DOWNIEVILLE PUBLIC UTILITY DIS | CA4600015 | California | Transient Non-Community | 650 |
| SUNBEAM LAKE RV RESORT | CA1300626 | California | Community | 650 |
| HART- RANSOM UNION SCHOOL & DISTRICT | CA5000133 | California | Non-Transient Non-Community | 650 |
| CENTER JUNIOR HIGH SCHOOL | CA3400372 | California | Transient Non-Community | 650 |
| MUSD-FRENCH CAMP SCHOOL | CA3900712 | California | Non-Transient Non-Community | 650 |
| NAPA PIPE REDEVELOPMENT PARTNERS | CA2800717 | California | Non-Transient Non-Community | 650 |
| JEHOVAH'S WITNESSES HALL | CA4901165 | California | Transient Non-Community | 650 |
| -BUREAUOF-LAND MANAGEMENT | CA1300590 | California | Transient Non-Community | 650 |
| EASTSIDE UNION SCHOOL DISTRICT | CA1900751 | California | Non-Transient Non-Community | 650 |
| BIG ROCK C.S.D. | CA0800532 | California | Community | 650 |
| SANDRA WALL | CA3000503 | California | Community | 650 |
| THE MORNING STAR PACKING COMPANY | CA2400175 | California | Non-Transient Non-Community | 650 |
| AVIZA TECHNOLOGY | CA4400806 | California | Non-Transient Non-Community | 650 |
| UNITED TECHNOLOGY - CHEMICAL DIVISION | CA4300756 | California | Non-Transient Non-Community | 650 |
| VENTURA BOYSCOUT COUNCIL | CA5601301 | California | Transient Non-Community | 650 |