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 |
|---|---|---|---|---|
| DEL SUR SCHOOL/WESTSIDE UNION DISTRICT | CA1900750 | California | Non-Transient Non-Community | 825 |
| SACRAMENTO NAT. WILDLIFE REFUGE | CA1100250 | California | Transient Non-Community | 824 |
| SIERRA LAKES COUNTY WATER DIST | CA3110017 | California | Community | 824 |
| ERICSON ELEMENTARY SCHOOL | CA1000274 | California | Non-Transient Non-Community | 820 |
| RIO SCHOOL DIST/RIO DEL VALLE SCHOOL | CA5602406 | California | Non-Transient Non-Community | 820 |
| LIBERTY ELEMENTARY SCHOOL | CA5403146 | California | Non-Transient Non-Community | 818 |
| LACSD - RIMFOREST | CA3610045 | California | Community | 817 |
| ADVENTIST HEALTH - ST. HELENA HOSPITAL | CA2800625 | California | Community | 817 |
| PARK WATER CO | CA1910118 | California | Community | 816 |
| WESTERN VALLEY MEAT COMPANY | CA1000461 | California | Non-Transient Non-Community | 815 |
| CENTRAL VALLEY MEAT CO INC | CA1600050 | California | Non-Transient Non-Community | 812 |
| APPLE VALLEY FOOTHILL CWD | CA3600008 | California | Community | 811 |
| TRANQUILLITY IRRIGATION DISTRICT | CA1010030 | California | Community | 807 |
| CANON MANOR WATER SYSTEM | CA4910022 | California | Community | 805 |
| USFS-JACKSON LAKE V-4 | CA1900583 | California | Transient Non-Community | 805 |
| HARRY V SLACK DWS | CA3310023 | California | Community | 805 |
| SILVER TIP CAMPGROUND | CA0202539 | California | Transient Non-Community | 805 |
| HOUSTON AVE COMPLEX | CA5400847 | California | Transient Non-Community | 804 |
| MUSD-NILE GARDEN SCHOOL | CA3901169 | California | Non-Transient Non-Community | 804 |
| RESORT IMPROVEMENT DISTRICT #1 | CA1210022 | California | Community | 803 |
| CSP-J.P. BURNS PARK | CA2710302 | California | Transient Non-Community | 802 |
| Nixon | 093200168 | California | Community | 800 |
| RUSHVILLE COUNTY MARKET | IL3138156 | California | Transient Non-Community | 800 |
| JOHN LATORACCA CORRECTIONAL FACILITY | CA2400172 | California | Community | 800 |
| USN SAN CLEMENTE ISLAND | CA3710707 | California | Non-Transient Non-Community | 800 |
| FAWN & STONEY CR CAMPGROUNDS | CA5300070 | California | Transient Non-Community | 800 |
| RANCHO SANTA TERESA | CA4300772 | California | Community | 800 |
| SHERMAN IND HI SCHL | 090500069 | California | Community | 800 |
| SOUTH YUBA RIVER STATE PARK | CA2905001 | California | Transient Non-Community | 800 |
| PLUMAS-EUREKA S.P. | CA3210300 | California | Transient Non-Community | 800 |
| WINDSOR IMMERSION SCHOOL | CA4900868 | California | Non-Transient Non-Community | 800 |
| San Bernardino KOA (Cable Canyon) | CA3600387 | California | Non-Transient Non-Community | 800 |
| HIGHLANDS MOBILE HOME | CA1400028 | California | Community | 800 |
| LIBBY OWENS FORD | CA3900812 | California | Transient Non-Community | 800 |
| SHIP ASHORE RESORT | CA0800607 | California | Community | 800 |
| SAN PASQUAL SCHOOL | CA1300565 | California | Non-Transient Non-Community | 800 |
| SENIOR CANYON MUTUAL WATER CO | CA5601117 | California | Community | 800 |
| NORTH COUNTY HI SCH WS***CLOSED*** | CA2701721 | California | Non-Transient Non-Community | 800 |
| KLAMATH TRINITY U S D | CA1200742 | California | Transient Non-Community | 800 |
| VALLES PRODUCE MARKET | IL3132068 | California | Transient Non-Community | 800 |
| NEVADA IRRIGATION DISTRICT | CA2910022 | California | Community | 800 |
| 1000 TRAILS / SOLEDAD CANYON PRESERVE | CA1900045 | California | Transient Non-Community | 800 |
| DELAWARE NORTH PARKS SERVICES AT TENAYA | CA2210003 | California | Non-Transient Non-Community | 800 |
| BURTON SCHOOL | CA5400560 | California | Non-Transient Non-Community | 800 |
| ESCALON USD-ESCALON HIGH SCH | CA3901168 | California | Non-Transient Non-Community | 800 |
| SOUTH DOS PALOS COUNTY WTR DT. | CA2410014 | California | Community | 800 |
| MONROE/LEINBERGER CNTR - WATERS | CA5700797 | California | Community | 800 |
| HERMISTON FUEL & GO | OR4195207 | California | Transient Non-Community | 800 |
| EAST BAY REGIONAL PARK DIST | CA0707618 | California | Transient Non-Community | 800 |
| CHICO GRANGE #486 | CA0409184 | California | Transient Non-Community | 800 |