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 |
| SUMMIT INDUSTRIAL PARK WATER SYSTEM | TEHACHAPI, CA | 25 | 6 | — |
| MILLENNIUM PACIFIC GREENHOUSES | TEHACHAPI, CA | 25 | 0 | — |
| KINGSTON-LATON PARK | HANFORD, CA | 25 | 0 | — |
| PINE ACRES BLUE LAKE RESORT | UPPER LAKE, CA | 25 | 24 | — |
| USFS OAK FLAT WATER SYSTEM | CHICO, CA | 25 | 13 | — |
| WINDFLOWER POINT MUTUAL WATER COMPANY | SOUTH SAN FRANCISCO, CA | 25 | 12 | — |
| JACK IN THE BOX - LAKEPORT, CA | FREMONT, CA | 25 | 10 | — |
| THREE BROTHERS TRAVEL PLAZA | NICE, CA | 25 | 8 | — |
| PIZZA FACTORY JANESVILLE | JANESVILLE, CA | 25 | 0 | — |
| JANESVILLE CHEVRON | JANESVILLE, CA | 25 | 0 | — |
| ARTISAN COFFEE | JANESVILLE, CA | 25 | 0 | — |
| SUPER Y MARKET AND VILLA MONTE MOTEL | WESTWOOD, CA | 25 | 0 | — |
| LEAVITT LAKE MARKET | ELK GROVE, CA | 25 | 0 | — |
| HALLELUJAH JUNCTION MARKET | CHILCOOT, CA | 25 | 0 | — |
| JANESVILLE FIRE HALL | SUSANVILLE, CA | 25 | 0 | — |
| JOHNSTONVILLE QUALITY FOODS | SUSANVILLE, CA | 25 | 0 | — |
| MOUNTAIN MEADOW RANCH | SUSANVILLE, CA | 25 | 0 | — |
| LASSEN RV PARK & CAMPGROUND | MCARTHUR, CA | 25 | 1 | — |
| LAKEVIEW INN AND EAGLE LAKE BAR & GRILL | ELK GROVE, CA | 25 | 1 | — |
| SKY PARK PROPERTIES | LAKEPORT, CA | 25 | 19 | — |
| HIDDEN VALLEY FOOD MART | SANTA ROSA, CA | 25 | 11 | — |
| HONEY LAKE CAMPGROUND | MILFORD, CA | 25 | 12 | — |
| THE MARK | HERLONG, CA | 25 | 0 | — |
| HIGH DESERT ADULT & TEEN CHALLENGE | SUSANVILLE, CA | 25 | 0 | — |
| CAMP SCOTT AND SCUDDER | DOWNEY, CA | 25 | 16 | — |
| USFS-MILL CREEK SUMMIT T-5 | ARCADIA, CA | 25 | 9 | — |
| CAMPS MUNZ AND MENDENHALL | DOWNEY, CA | 25 | 6 | — |
| DEL SUR GARDENS TRAILER PARK | WESTLAKE VILLAGE, CA | 25 | 6 | — |
| USFS-RINCON STATION B-10 | ARCADIA, CA | 25 | 2 | — |
| VALHALLA WATER ASSOCIATION | TUJUNGA, CA | 25 | 36 | — |
| YOUNG-NAK PRESBYTERIAN CHURCH | LAKE HUGHES, CA | 25 | 19 | — |
| USFS-SKYLINE PARK / MOUNT WILSON A-4 | ARCADIA, CA | 25 | 18 | — |
| USFS-RED BOX STATION A-3 | ARCADIA, CA | 25 | 11 | — |
| USFS-APPLETREE FLATS V-3 | ARCADIA, CA | 25 | 7 | — |
| USFS-LOS ALAMOS S-15 | ARCADIA, CA | 25 | 13 | — |
| USFS-VALYERMO RANGER STATION | ARCADIA, CA | 25 | 14 | — |
| AGNEW MEADOWS CAMPGROUND | BISHOP, CA | 25 | 6 | — |
| CASA GRANDE MOTEL | MADERA, CA | 25 | 1 | — |
| EASTMAN LAKE HEADQUARTERS | RAYMOND, CA | 25 | 26 | — |
| GEORGE'S RIVER RANCH | MADERA, CA | 25 | 3 | — |
| BBPA FIRE/ARCHCOMB DOMESTIC | CLOVIS, CA | 25 | 3 | — |
| NORTH FORK COMMUNITY DEVELOPMENT COUNCIL | NORTH FORK, CA | 25 | 0 | — |
| MCLEAN WATER SYSTEM | OAKHURST, CA | 25 | 0 | — |
| DIEKMANN'S GENERAL STORE | TOMALES, CA | 25 | 0 | — |
| DEVILS GULCH RANCH WATER SYSTEM | NICASIO, CA | 25 | 6 | — |
| MCPR-HORNITOS CO. PARK | MARIPOSA, CA | 25 | 4 | — |
| SHELL BUILDING | ROSS, CA | 25 | 0 | — |
| MENDOCINO INN AND FARM - C | LITTLE RIVER, CA | 25 | 0 | — |
| MCPR-RED CLOUD PARK | MARIPOSA, CA | 25 | 6 | — |
| COAST INN AND SPA | FORT BRAGG, CA | 25 | 13 | — |