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 |
|---|---|---|---|---|
| PATTERSON TRACT CSD | CA5402038 | California | Community | 550 |
| FOUNTAIN VALLEY SHOPPING CENTER | CO0221440 | California | Non-Transient Non-Community | 550 |
| LANDALE MUTUAL WATER COMPANY | CA1900809 | California | Community | 550 |
| WASHINGTON COLONY SCHOOL | CA1000285 | California | Non-Transient Non-Community | 550 |
| LSID-PAGE MOORE SYSTEM | CA5410037 | California | Community | 550 |
| PACIFIC SCIENTIFIC ENERGETIC MATS. COMP. | CA3500563 | California | Non-Transient Non-Community | 550 |
| ALICE G MULCAHY JR HIGH SCHOOL | CA5400715 | California | Transient Non-Community | 550 |
| FAIRVIEW SCHOOL | CA1502080 | California | Transient Non-Community | 550 |
| EL TEJON MIDDLE SCHOOL | CA1502074 | California | Non-Transient Non-Community | 550 |
| VINEYARD RV PARK | CA4800753 | California | Community | 550 |
| CALIFORNIA CANNERS | CA4300730 | California | Transient Non-Community | 550 |
| MORGAN HILL USD-ENCINAL SCHOOL | CA4300589 | California | Non-Transient Non-Community | 549 |
| SISKIYOU LAKE HIGHLANDS MWC | CA4700880 | California | Community | 549 |
| CLAYTON PALMS WATER | CA0707603 | California | Community | 549 |
| TUD - MONTE GRANDE WATER SYSTEM | CA5510030 | California | Community | 548 |
| CALPELLA COUNTY WATER DISTRICT | CA2300507 | California | Community | 548 |
| TROPICO SCHOOL WATER SYSTEM | CA1502288 | California | Non-Transient Non-Community | 547 |
| BUSHYTAIL, MNRVILLE, CLARK SP | CA5300071 | California | Transient Non-Community | 547 |
| CASE RIETVELD | CA3900856 | California | Community | 546 |
| KORBEL BROTHERS WINERY | CA4900999 | California | Non-Transient Non-Community | 546 |
| GOLDEN STATE WATER COMPANY - LAKE MARIE | CA4210022 | California | Community | 545 |
| FRANKLIN ELEMENTARY SCHOOL | CA5100139 | California | Non-Transient Non-Community | 545 |
| LLANO DEL RIO WATER COMPANY | CA1900849 | California | Community | 545 |
| FULLER ACRES MUTUAL WATER COMPANY | CA1500296 | California | Community | 545 |
| CHIRIACO SUMMIT WATER DIST. | CA3301115 | California | Community | 544 |
| DARR WATER CO | CA3601013 | California | Non-Transient Non-Community | 543 |
| RIO VISTA MOBILE HOME PARK | CA5200508 | California | Community | 543 |
| LOMA PRIETA JUSD-LOMA PRIETA SCHOOL | CA4300721 | California | Non-Transient Non-Community | 542 |
| VAN LOON MUTUAL WATER COMPANY | CA3600334 | California | Community | 542 |
| GEYSERVILLE WATER WORKS | CA4900520 | California | Community | 540 |
| HOME GARDENS SCHOOL | CA3301168 | California | Transient Non-Community | 540 |
| RIVERVIEW MOBILE HOME ESTATES | CA5000090 | California | Community | 540 |
| SHERWOOD MOBILE HOME PARK | CA1900907 | California | Community | 540 |
| CLM-HOLEY MEADOW CAMPGROUND | CA5400777 | California | Transient Non-Community | 540 |
| HAYWARD FLAT CAMPGROUND | CA5300072 | California | Transient Non-Community | 540 |
| LANARE COMMUNITY SERVICES DIST | CA1000053 | California | Community | 540 |
| BRITTAN ELEMENTARY SCHOOL | CA5100146 | California | Non-Transient Non-Community | 540 |
| LAURENCE MC GEE SCHOOL | CA1900070 | California | Non-Transient Non-Community | 538 |
| WOODLAND PARK MUTUAL WATER CO | CA4000506 | California | Community | 538 |
| WOODWARD RESERVOIR WATER SYSTEM | CA5000165 | California | Transient Non-Community | 537 |
| GILROY USD-RUCKER SCHOOL | CA4300605 | California | Non-Transient Non-Community | 536 |
| SID - GIBSON CANYON | CA4810010 | California | Community | 535 |
| EL DORADO ID - OUTINGDALE | CA0910018 | California | Community | 535 |
| Lone Pine | 090600138 | California | Community | 535 |
| WSL - SURF RANCH | CA1600608 | California | Transient Non-Community | 535 |
| GABILAN WC | CA2700586 | California | Community | 535 |
| GROVER HOT SPRINGS STATE PARK | CA0202514 | California | Transient Non-Community | 533 |
| COLUSA INDUSTRIAL PROPERTIES | CA0600065 | California | Non-Transient Non-Community | 533 |
| OCCIDENTAL COMMUNITY SERVICES DISTRICT | CA4900536 | California | Community | 533 |
| TUD-CUESTA CENTER-LAMBERT LAKES | CA5510027 | California | Community | 533 |