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 |
| GREENHEART FARMS | ARROYO GRANDE, CA | 91 | 5 | — |
| HOOT OWL CREEK/ALEX. VALLEY VINEYARDS JV | HEALDSBURG, CA | 91 | 8 | — |
| SILVER OAK WINE CELLARS LLC | HEALDSBURG, CA | 91 | 0 | — |
| DAVIS MIGRANT CENTER (CIUDAD DEL SOL) | WOODLAND, CA | 91 | 9 | — |
| USBR-SLDMWA - CVP JONES PUMPING PLANT | BYRON, CA | 90 | 0 | — |
| MERRY MOUNTAIN MUTUAL | CLIPPER MILLS, CA | 90 | 33 | — |
| MACS OLD HOUSE | MORAGA, CA | 90 | 12 | — |
| O'NEILL VINTNERS & DISTILLERS | PARLIER, CA | 90 | 54 | — |
| TRUE ORGANIC PRODUCTS | SPRECKLES, CA | 90 | 77 | — |
| CALWEST RAIN - KERMAN | RAYMOND, CA | 90 | 8 | — |
| RAWSON CREEK MUTUAL WATER COMPANY | BISHOP, CA | 90 | 10 | — |
| GOOSELAKE WATER COMPANY | BAKERSFIELD, CA | 90 | 35 | — |
| SUNNYGEM HULLING & SHELLING OPERATIONS | WASCO, CA | 90 | 6 | — |
| METTLER COUNTY WATER DISTRICT | BAKERSFIELD, CA | 90 | 49 | — |
| CLARK STREET COMMUNITY WELL | LAKE ISABELLA, CA | 90 | 46 | — |
| BLUE LAKES IMPROVEMENT CLUB | UPPER LAKE, CA | 90 | 5 | — |
| ACTON CONSERVATION CAMP #11 | LOS ANGELES, CA | 90 | 11 | — |
| B K LIGHTING INC | MADERA, CA | 90 | 53 | — |
| SAN JOAQUIN WINE COMPANY | MADERA, CA | 90 | 126 | — |
| NICK'S COVE | MARSHALL, CA | 90 | 4 | — |
| LAKE VIEW MUTUAL WATER CO. | REDWOOD VALLEY, CA | 90 | 28 | — |
| MENDOCINO PRESBYTERIAN CHURCH | MENDOCINO, CA | 90 | 0 | — |
| BRIDGEPORT RESERVOIR MARINA AND CG | BRIDGEPORT, CA | 90 | 14 | — |
| SPRING CANYON WA | SALINAS, CA | 90 | 51 | — |
| MESA DEL TORO MWC | SALINAS, CA | 90 | 97 | — |
| PRUNEDALE PLAZA WS | MODESTO, CA | 90 | 23 | — |
| TULARCITOS MWC | CARMEL VALLEY, CA | 90 | 54 | — |
| LINDA VISTA MUTUAL WATER CO | ANGWIN, CA | 90 | 4 | — |
| SHADY LAKE WATER ASSOCIATION | NORTH SAN JUAN, CA | 90 | 44 | — |
| CAMP TIMBERWOLF | MORAGA, CA | 90 | 7 | — |
| PNF LIGHTING TREE CG | QUINCY, CA | 90 | 15 | — |
| ANZA PINES MOBILE HOME PARK | ANZA, CA | 90 | 44 | — |
| DESERT SAGE YOUTH WELLNESS CENTER | HEMET, CA | 90 | 0 | — |
| MAGNOLIA MUTUAL WATER | COURTLAND, CA | 90 | 52 | — |
| VINEYARD ESTATES MWC | HOLLISTER, CA | 90 | 30 | — |
| WEST END MWC | LUCERNE VALLEY, CA | 90 | 7 | — |
| PORTOLA IMPROVEMENT ASSOCIATION MWC | LA HONDA, CA | 90 | 53 | — |
| Z BEST PRODUCTS | GILROY, CA | 90 | 4 | — |
| VILLAGE GREEN | ANDERSON, CA | 90 | 13 | — |
| WEST COTTONWOOD APARTMENTS | SACRAMENTO, CA | 90 | 14 | — |
| AIRPORT INDUSTRIAL PARK | BEVERLY HILLS, CA | 90 | 13 | — |
| SOUTH CLOVERDALE WATER COMPANY | CLOVERDALE, CA | 90 | 17 | — |
| BLUE SPRUCE MOBILE HOME PARK | SACRAMENTO, CA | 90 | 12 | — |
| STONESTREET WINERY | HEALDSBURG, CA | 90 | 5 | — |
| WOOD COLONY CHRISTIAN SCHOOL | MODESTO, CA | 90 | 11 | — |
| COE ORCHARD EQUIPMENT | LIVE OAK, CA | 90 | 3 | — |
| VINA ELEMENTARY SCHOOL | VINE, CA | 90 | 11 | — |
| SADDLEBACK MUTUAL WATER CO. | REDDING, CA | 90 | 12 | — |
| RANCHO TEHAMA ELEM SCHOOL | CORNING, CA | 90 | 2 | — |
| MARY SMITH CAMPGROUND | REDDING, CA | 90 | 0 | — |