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 |
|---|---|---|---|---|
| MOSS LANDING SCHOOL WS **CLOSED** | CA2700598 | California | Non-Transient Non-Community | 575 |
| RIVER PINES PUD | CA0310006 | California | Community | 574 |
| BEAR RIVER LAKE RESORT | CA0300036 | California | Transient Non-Community | 571 |
| OAK VALLEY SCHOOL | CA5400713 | California | Non-Transient Non-Community | 570 |
| WEBSTER SCHOOL | CA2000603 | California | Non-Transient Non-Community | 570 |
| MD 33 FAIRMEAD | CA2000554 | California | Community | 568 |
| NEW BRIGTON STATE BEACH | CA4410309 | California | Transient Non-Community | 567 |
| RICHGROVE ELEMENTARY SCHOOL | CA5400978 | California | Transient Non-Community | 567 |
| PLANADA ELEMENTARYSCHOOL | CA2400066 | California | Non-Transient Non-Community | 567 |
| BANNING HTS. MUTUAL WATER CO. | CA3301031 | California | Community | 567 |
| GLEN EDEN SUN CLUB | CA3301283 | California | Community | 566 |
| LAKE FOREST MUTUAL W.C. | CA1800511 | California | Community | 565 |
| JUVENILE JUSTICE CAMPUS | CA1000570 | California | Community | 565 |
| CSP-BOTHE-NAPA VALLEY STATE PARK | CA2810301 | California | Transient Non-Community | 565 |
| CA3600163 | California | Community | 564 | |
| JACUMBA COMMUNITY SD | CA3710011 | California | Community | 561 |
| APPLE MARKET TWO | CA3301991 | California | Transient Non-Community | 561 |
| COSUMNES RIVER ELEMENTARY SCHOOL | CA3400253 | California | Non-Transient Non-Community | 560 |
| ROBERT WILSON | CA1000064 | California | Community | 560 |
| NORTH KAWEAH MUTUAL WATER COMPANY | CA5400506 | California | Community | 560 |
| MIDWAY GARDENS MUTUAL WATER CO | CA1900911 | California | Community | 560 |
| DOLPHIN ISLE MARINA | CA2300743 | California | Community | 560 |
| BLYTHE - MESA RANCH | CA3301428 | California | Community | 558 |
| RANCHO SECO PARK | CA3400302 | California | Transient Non-Community | 558 |
| CENTRAL VALLEY BAPTIST CHURCH WS | CA3901486 | California | Non-Transient Non-Community | 556 |
| THOUSAND TRAILS | CA3301753 | California | Transient Non-Community | 555 |
| ARABIAN GARDENS | CA3301021 | California | Community | 555 |
| SIERRA PINES | CA3301619 | California | Community | 555 |
| MONTEREY MUSHROOMS - MAHER CRT | CA2701940 | California | Non-Transient Non-Community | 554 |
| FELSPAR GARDENS MWC | CA3301264 | California | Community | 552 |
| VAN DUZEN - HUMBOLDT CO. PARKS | CA1200798 | California | Transient Non-Community | 551 |
| LEWISTON PARK MWC | CA5301003 | California | Community | 551 |
| YOSEMITE LAKES COMMUNITY CHURCH | CA2000202 | California | Non-Transient Non-Community | 551 |
| GIBSON ELEMENTARY SCHOOL | CA1000275 | California | Transient Non-Community | 550 |
| DIERBERG/STAR LANE VINEYARD | CA4200951 | California | Transient Non-Community | 550 |
| HUGHES-ELIZABETH LAKE UNIFIED SCHOOL DIS | CA1900886 | California | Non-Transient Non-Community | 550 |
| PARLIER MIGRANT CAMP | CA1000331 | California | Non-Transient Non-Community | 550 |
| MISSION OAKS MOBILE HOME PARK | CA3510006 | California | Community | 550 |
| EDMUNDSON ACRES WATER SYSTEM | CA1500190 | California | Community | 550 |
| ACACIA PARK | CA2701201 | California | Community | 550 |
| RIO SCHOOL DIST/ RIO REAL SCHOOL | CA5602408 | California | Non-Transient Non-Community | 550 |
| SANTA CRUZ COUNTY FAIRGROUNDS | CA4400725 | California | Non-Transient Non-Community | 550 |
| GRIMMWAY FARMS | CA1502560 | California | Non-Transient Non-Community | 550 |
| SAN VICENTE WATER COMPANY | CA4210005 | California | Community | 550 |
| SUNNYSIDE UNION ELEMENTARY | CA5400562 | California | Non-Transient Non-Community | 550 |
| WASHINGTON COLONY SCHOOL | CA1000285 | California | Non-Transient Non-Community | 550 |
| PACIFIC SCIENTIFIC ENERGETIC MATS. COMP. | CA3500563 | California | Non-Transient Non-Community | 550 |
| LSID-PAGE MOORE SYSTEM | CA5410037 | California | Community | 550 |
| ALICE G MULCAHY JR HIGH SCHOOL | CA5400715 | California | Transient Non-Community | 550 |
| FOUNTAIN VALLEY SHOPPING CENTER | CO0221440 | California | Non-Transient Non-Community | 550 |