Public Water Systems
7,249 active public water systems in CA, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
| MATTOLE ELEMENTARY SCHOOL | PETROLIA, CA | 50 | 33 | — |
| BRIDGEVILLE ELEM. SCHOOL | BRIDGEVILLE, CA | 50 | 16 | — |
| GORDON'S WELL #1 | WINTERHAVEN, CA | 50 | 16 | — |
| GORDON'S WELL PARK # 2 | WINTERHAVEN, CA | 50 | 12 | — |
| BRANDT CATTLE | CALIPATRIA, CA | 50 | 8 | — |
| TECOPA HOT SPRINGS PARK | INDEPENDENCE, CA | 50 | 19 | — |
| TECOPA PALMS THERAPEUTIC HOT SPRINGS RES | TECOPA, CA | 50 | 9 | — |
| TABOOSE CREEK CAMPGROUND | INDEPENDENCE, CA | 50 | 19 | — |
| BIG TREES CAMPGROUND | BISHOP, CA | 50 | 1 | — |
| SAGE FLAT CAMPGROUND | BISHOP, CA | 50 | 1 | — |
| ROCK CREEK LAKE BOAT DOCK & GROUP CAMP | BISHOP, CA | 50 | 1 | — |
| ROUND MOUNTAIN WATER COMPANY | BAKERSFIELD, CA | 50 | 142 | — |
| SIERRA VISTA RESTAURANT | WELDON, CA | 50 | 97 | — |
| GOSFORD ROAD WATER COMPANY | BAKERSFIELD, CA | 50 | 50 | — |
| M & L COLD STORAGE WATER SYSTEM | DELANO, CA | 50 | 5 | — |
| AGAPE MUTUAL WATER SYSTEM | BAKERSFIELD, CA | 50 | 12 | — |
| JAKOV DULCICH & SONS WATER SYSTEM | MCFARLAND, CA | 50 | 8 | — |
| ROBERTS INVESTMENTS WATER SYSTEM | MOJAVE, CA | 50 | 4 | — |
| 15TH AVENUE | STOCKTON, CA | 50 | 7 | — |
| NETTO AG INC. | HANFORD, CA | 50 | 18 | — |
| WILDWOOD | LAKEPORT, CA | 50 | 11 | — |
| TWIN CREEKS MOBILE AND RV VILLAGE | IRVINE, CA | 50 | 45 | — |
| AGUA DULCE WOMEN'S CLUB | AGUA DULCE, CA | 50 | 4 | — |
| USFS-CHILAO MAIN A-9 | ARCADIA, CA | 50 | 35 | — |
| HENNINGER FLATS | LOS ANGELES, CA | 50 | 1 | — |
| USFS-SYCAMORE FLATS V-5 | ARCADIA, CA | 50 | 3 | — |
| ACTON FOUR SQUARE CHURCH | ACTON, CA | 50 | 20 | — |
| LIVING SPRINGS CHURCH | AGUA DULCE, CA | 50 | 6 | — |
| BASS FORK STAR | NORTH FORK, CA | 50 | 46 | — |
| SC CORNER (WATER ONLY) | MADERA, CA | 50 | 40 | — |
| MARQUEZ RENTAL | FIREBAUGH, CA | 50 | 81 | — |
| BONITA FIVE INC. | MADERA, CA | 50 | 88 | — |
| PARADISE SPRINGS | OAKHURST, CA | 50 | 11 | — |
| AUDUBON CANYON RANCH - MGP PICHER | STINSON BEACH, CA | 50 | 27 | — |
| AUDUBON CANYON RANCH - MGP VOLUNTEER | STINSON BEACH, CA | 50 | 27 | — |
| MARSHALL BOAT WORKS | MARSHALL, CA | 50 | 0 | — |
| TOMALES CHURCH OF THE ASSUMPTION | TOMALES, CA | 50 | 0 | — |
| MAIF - MARSHALL AQUA IMPROVEMENT FORUM | MARSHALL, CA | 50 | 0 | — |
| MCPR-MIDPINES PARK | MARIPOSA, CA | 50 | 2 | — |
| MCPR - DARRAH SCHOOL PARK | MARIPOSA, CA | 50 | 2 | — |
| TAVIS CORPORATION | MARIPOSA, CA | 50 | 12 | — |
| HERITAGE HOUSE | REDDING, CA | 50 | 27 | — |
| SEAFAIR ROAD AND WATER COMPANY | MENDOCINO, CA | 50 | 8 | — |
| THE LAND | PHILO, CA | 50 | 4 | — |
| MONTESSORI DEL MAR LEARNING CENTER | FORT BRAGG, CA | 50 | 7 | — |
| CORTEZ GROWERS ASSO. WATER SYSTEM | TURLOCK, CA | 50 | 0 | — |
| MDF-ADIN RANGER STATION | ALTURAS, CA | 50 | 15 | — |
| MENDOCINO HOTEL | MENDOCINO, CA | 50 | 5 | — |
| HOLLY RANCH VILLAGE | FORT BRAGG, CA | 50 | 23 | — |
| PINE GLADE ASSOCIATION | LA CANADA, CA | 50 | 27 | — |