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 |
|---|---|---|---|---|
| TEMPERANCE-KUTNER SCHOOL | CA1000197 | California | Transient Non-Community | 650 |
| FRANKLIN ELEMENTARY SCHOOL | CA3400248 | California | Non-Transient Non-Community | 650 |
| EL PASO DE ROBLES SCHOOL | CA7300319 | California | Community | 647 |
| PINNACLES NATIONAL PARK CAMPGROUND | CA3510502 | California | Transient Non-Community | 647 |
| EL PASO DE ROBLES SCHOOL | CA0000319 | California | Community | 647 |
| Andrade Border Station | 090400678 | California | Non-Transient Non-Community | 647 |
| PLEASANTIMES MUTUAL WATER CO | CA0707576 | California | Community | 644 |
| COUNTY SERVICE AREA 11 | CA4100582 | California | Community | 642 |
| TUD - MONO VILLAGE WATER SYSTEM | CA5510019 | California | Community | 640 |
| DIAMOND A MUTUAL WATER COMPANY | CA4900562 | California | Community | 640 |
| NAF EL CENTRO | CA1310700 | California | Community | 637 |
| HEMLOCK MUTUAL WATER COMPANY | CA1900714 | California | Community | 636 |
| ORLEANS C.S.D. | CA1200729 | California | Community | 636 |
| YOSEMITE NPS-EL PORTAL | CA2210515 | California | Community | 635 |
| MINERAL COUNTY WATER DISTRICT | CA5200503 | California | Community | 634 |
| SOUTH SAN BERNARDINO WATER DST | CA3610102 | California | Community | 633 |
| TRADEWIND WATER ASSOC. | CA1500406 | California | Community | 632 |
| LOLETA W W | CA1200580 | California | Community | 630 |
| IVCSD-GREENVILLE | CA3210001 | California | Community | 630 |
| LODI USD-DAVIS SCHOOL | CA3901085 | California | Non-Transient Non-Community | 630 |
| NEWELL COUNTY WATER DISTRICT | CA2500801 | California | Community | 629 |
| SAN MARTIN COUNTY WATER DISTRICT | CA4300542 | California | Community | 627 |
| MP MINE OPERATIONS LLC | CA3600172 | California | Community | 626 |
| GERBER UNION ELEMENTARY SCHOOL DISTRICT | CA5200519 | California | Non-Transient Non-Community | 625 |
| LAKE ALPINE WATER COMPANY | CA0210001 | California | Community | 625 |
| KENWOOD VILLAGE WATER COMPANY | CA4900534 | California | Community | 625 |
| CREST PUBLIC UTILITY DIST | CA3710003 | California | Community | 624 |
| ARCTIC COLD | CA4200983 | California | Non-Transient Non-Community | 623 |
| MT. MADONNA COUNTY PARK | CA4300612 | California | Transient Non-Community | 621 |
| CWSC COUNTRY MEADOWS | CA2701929 | California | Community | 621 |
| MOONLIGHT PACKING CO. LLC - PLANT 8 | CA1000671 | California | Transient Non-Community | 620 |
| NEPENTHE WS | CA2701280 | California | Community | 618 |
| HOWARD ELEMENTARY SCHOOL | CA2000600 | California | Non-Transient Non-Community | 618 |
| PLAINVIEW MUTUAL WATER COMPANY | CA5410039 | California | Community | 617 |
| LITTLE BEAR WATER COMPANY | CA2700630 | California | Community | 616 |
| Point Arena Rancheria | 090600145 | California | Community | 616 |
| DUCOR CSD | CA5400542 | California | Community | 616 |
| SANTA NELLA COUNTY WATER DISTRICT | CA2410017 | California | Community | 615 |
| TROUT GULCH MUTUAL WATER COMPANY | CA4400502 | California | Community | 614 |
| CSA 62 | CA3301577 | California | Community | 614 |
| LOS ANGELES CWWD 40, REG. 35-N.E. L.A. | CA1910027 | California | Community | 612 |
| USFS CLARK FORK CAMPD | CA5500176 | California | Transient Non-Community | 612 |
| RIVERLAND RESORT | CA3600365 | California | Transient Non-Community | 611 |
| CSA 70 W-3 HACIENDA | CA3600114 | California | Community | 611 |
| CSP-ARMSTRONG REDWOODS STATE RESERVE | CA4910306 | California | Transient Non-Community | 611 |
| RIVERDALE PARK TRACT CSD | CA5000019 | California | Community | 610 |
| LASSEN VNP - MANZANITA LAKE | CA5210505 | California | Transient Non-Community | 606 |
| BITNEY SPRINGS CENTER WATER SYSTEM | CA2900563 | California | Non-Transient Non-Community | 606 |
| LUCERNE VALLEY HIGH SCHOOL | CA3601095 | California | Non-Transient Non-Community | 606 |
| RIO BRAVO SCHOOL WATER SYSTEM | CA1500229 | California | Non-Transient Non-Community | 605 |