Browse Water Systems
20,002 public water systems in CA.
Public Water Systems Database
Browse 20,002 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 |
|---|---|---|---|---|
| RIO MANOR MUTUAL WATER CO | CA5610035 | California | Community | 983 |
| CASITAS MUNICIPAL WATER DIST. | CA5610067 | California | Community | 983 |
| SULTANA COMMUNITY SERVICES DISTRICT | CA5400824 | California | Community | 983 |
| APPLE VALLEY HEIGHTS CWD | CA3600009 | California | Community | 983 |
| CITY OF LOYALTON | CA4610001 | California | Community | 983 |
| CALTRANS PHILLIP S. RAINE SFTY RSRA NB | CA5401045 | California | Transient Non-Community | 980 |
| CAL AM WATER COMPANY - AMBLER PARK | CA2710006 | California | Community | 980 |
| FRESNO COUNTY WATER WORKS | CA1010038 | California | Community | 977 |
| NYELAND ACRES MUTUAL WATER CO | CA5602111 | California | Community | 975 |
| CVUSD, WESTSIDE SCHOOL | CA3301153 | California | Non-Transient Non-Community | 975 |
| RICHARD A. MCGEE TRAINING CENTER | CA3410802 | California | Non-Transient Non-Community | 975 |
| LANTANA CASCADE MHP | FL4504476 | California | Community | 975 |
| DESERT LAKE COMM SERV DIST | CA1510027 | California | Community | 968 |
| SANTA LUCIA PRESERVE WS | CA2702521 | California | Community | 966 |
| BERENDA SCHOOL | CA2000730 | California | Non-Transient Non-Community | 965 |
| SAN JOAQUIN COUNTY - THORNTON | CA3910009 | California | Community | 964 |
| LAKE PIRU PARK - UWCD | CA5601706 | California | Transient Non-Community | 960 |
| YCCD-MODESTO JUNIOR COLLEGE-WEST CAMPUS | CA5000135 | California | Non-Transient Non-Community | 960 |
| Running Creek Casino Water System (Habematolel) | 090605000 | California | Non-Transient Non-Community | 960 |
| NEVADA ID - CASCADE SHORES | CA2910007 | California | Community | 959 |
| FRESNO COUNTY WATER WORKS | CA1010043 | California | Community | 959 |
| BEAN HOLLOW COMFORT STATION | CA4110305 | California | Transient Non-Community | 958 |
| KINGS ROW MANUFACTURED HOME COMMUNITY | TX1010680 | California | Community | 951 |
| ST MARYS HIGH SCHOOL | CA3901209 | California | Non-Transient Non-Community | 950 |
| Augustine Casino | 090605142 | California | Non-Transient Non-Community | 950 |
| Wadsworth | 093200169 | California | Community | 950 |
| SUN GARDEN PACKING CO. | CA4300911 | California | Non-Transient Non-Community | 950 |
| GATEHOUSE TASTING ROOM AT BIEN NACIDO | CA4200981 | California | Transient Non-Community | 950 |
| LEAVITT LAKE CSD | CA1810004 | California | Community | 950 |
| LAWSON S LANDING | CA2110008 | California | Community | 946 |
| LAKE ALPINE CAMP GROUND | CA0202538 | California | Transient Non-Community | 945 |
| KNIGHTS LANDING SVC. DIST. | CA5710004 | California | Community | 944 |
| DEL ORO CALIFORNIA PINES DISTRICT | CA5410034 | California | Community | 944 |
| WESTFIELD GARDEN MOBILE HOME PARK | TX1011947 | California | Community | 942 |
| DIVISADERO JR HIGH | CA5400855 | California | Transient Non-Community | 941 |
| ROSAMOND SCHOOL WATER SYSTEM | CA1502231 | California | Non-Transient Non-Community | 940 |
| SUNDALE UNION SCHOOL | CA5400714 | California | Non-Transient Non-Community | 930 |
| CALIFORNIA WATER SERVICE CO-LAKE HUGHES | CA1910242 | California | Community | 929 |
| PSMCSD - NORMCO | CA2700511 | California | Community | 928 |
| FAIRVIEW BEACH/POT. LANDING | VA6099250 | California | Community | 928 |
| JACOBY CREEK CWD | CA1210021 | California | Community | 924 |
| CAMANCHE NORTH SHORE INC. | CA0310008 | California | Community | 922 |
| CISCO GROVE CAMPGROUND & RV PARK | CA3106501 | California | Transient Non-Community | 920 |
| CUESTA LA HONDA GUILD INC | CA4110012 | California | Community | 915 |
| EL CAPITAN BEACH STATE PARK | CA4210304 | California | Transient Non-Community | 915 |
| CITY OF MODESTO - GRAYSON | CA5010033 | California | Community | 914 |
| RANCHO SAN JOAQUIN MWC | CA3500581 | California | Community | 914 |
| JOJOBA HILLS SKP RESORT, INC. | CA3301385 | California | Non-Transient Non-Community | 912 |
| PINON PINES MWC | CA1510054 | California | Community | 908 |
| KINGS RIVER HARDWICK SCHOOL | CA1600015 | California | Non-Transient Non-Community | 908 |