California Tap Water Quality
EPA water quality data for 150 community water systems serving 3,388,772+ people in California. Click any system to see violations, lead testing results, and a safety grade.
EAST BAY MUD
ALAMEDA COUNTY WATER DISTRICT
CONTRA COSTA WATER DISTRICT
CITY OF HAYWARD
EL DORADO ID - MAIN
CITY OF ANTIOCH
CAL-WATER SERVICE CO.-CHICO
SOUTH TAHOE PUD - MAIN
DUBLIN SAN RAMON SERVICES DISTRICT
CITY OF PLEASANTON
BRENTWOOD
CITY OF PITTSBURG
CALIFORNIA WATER SERVICE - LIVERMORE
DIABLO WATER DISTRICT
CITY OF LIVERMORE
CITY OF MARTINEZ
GOLDEN STATE WATER COMPANY - BAY POINT
SOUTH FEATHER W&P - MINERS RANCH
CITY OF CRESCENT CITY
TOWN OF DISCOVERY BAY
THERMALITO WATER & SEWER DIST
CCWD - EBBETTS PASS
CAL-WATER SERVICE CO.-OROVILLE
DEL ORO WATER CO.-PARADISE PINES
CCWD - JENNY LIND
GEORGETOWN DIVIDE PUD
PLACERVILLE, CITY OF - MAIN
PARADISE IRRIGATION DISTRICT
AWA BUCKHORN PLANT
KIRKWOOD MEADOWS PUBLIC UTILITY DISTRICT
CITY OF GRIDLEY
AWA, IONE
CITY OF COLUSA
CALAVERAS PUD
CITY OF WILLIAMS
CCWD - COPPER COVE
CITY OF JACKSON
AWA, TANNER
BLUE LAKE SPRINGS MUT WTR
UNION PUBLIC UTILITY DISTRICT
ANGELS, CITY OF
JACKSON VALLEY IRRIGATION DISTRICT
LUKINS BROTHERS WATER COMPANY
ARBUCKLE PUBLIC UTILITY DISTRICT
LAKESIDE PARK ASSOCIATION
BERTSCH OCEAN VIEW CSD
SMITH RIVER C.S.D.
AWA - CAMANCHE VILLAGE
CITY OF BIGGS
DURHAM IRRIGATION DISTRICT
TAHOE KEYS WATER COMPANY
ALAMEDA POINT
GRIZZLY FLATS COMMUNITY SERVIC
MAXWELL PUBLIC UTILITY DISTRICT
PINE GROVE COMM SERV DIST
PLYMOUTH, CITY OF
CCWD - WEST POINT
CAMANCHE NORTH SHORE INC.
VALLEY SPRINGS PUD
DEL ORO WATER CO.-LIME SADDLE MARINA
FIRST MACE MEADOW # 1
CAMANCHE SOUTH SHORE-EBMUD
TAHOE CITY PUD - RUBICON
SNOWSHOE SPRINGS ASSN.
GASQUET C.S.D.
BIG ROCK C.S.D.
PLEASANTIMES MUTUAL WATER CO
LAKE ALPINE WATER COMPANY
RIVER PINES PUD
CLAYTON PALMS WATER
LANARE COMMUNITY SERVICES DIST
EL DORADO ID - OUTINGDALE
CASTLEWOOD DOMESTIC WATER SYSTEM
DEL ORO WATER CO.-STIRLING BLUFFS
COLUSA CO. WWD #1 - GRIMES
WILLOW MOBILE HOME PARK
GRIDLEY FARM LABOR HOUSING
TRAILER HAVEN MOBILE HOME PARK
FCSA 05 - WILDWOOD ISLAND
EL DORADO ID - STRAWBERRY
BUTTE CREEK ESTATES MUTUAL WATER CO
COLUSA CO. WWD #2 - PRINCETON
WILLOW PARK MARINA
LAS DELTAS MUTUAL WATER COMPANY
KLAMATH C.S.D.
ORWOOD RESORT
SHAVER LAKE HEIGHTS WATER ASSN
DEL ORO WATER CO.-MAGALIA
DELTA MUTUAL WATER COMPANY
PLEASANT GROVE MHP
EASTON ESTATES WATER COMPANY
HOPE FOUNDATION/MORIAH HEIGHTS
LAKE MADRONE WATER DISTRICT
FCWWD 42/ALLUVIAL & FANCHER
GRAN MUTUAL WATER CO
ANGELS CAMP RV/CAMPING RESORT
TOWN OF SUNOL - SFPUC
GOLDEN FEATHER MHP
BELMONT WATER CORPORATION
CCWD - WALLACE
ALMOND GROVE MOBILE PARK
COLUSA CO. SERVICE AREA #2-STONYFORD
NORTHCREST TRAILER CITY
COLUSA CO. SERVICE AREA #1-CENTURY RANCH
FCSA 30 - EL PORVENIR
MEADOW LAKES CLUB
FIRST MACE MEADOWS UNIT NO. 2
RIVERVIEW WATER ASSOCIATION
DRYTOWN COUNTY WATER DISTRICT
DINGERVILLE USA PARK
CAMINO MOBILEHOME
BETHEL ISLAND ESTATES
REDWOOD PARK C.S.D.
FCWWD 40 - SHAVER SPRINGS
AWA LA MEL HEIGHTS #3
DEL ORO WC - ARBUCKLE DISTRICT
BETHEL ISLAND MHC
HRC C.S.D.
FCWWD 38/SKY HARBOUR
FOOTHILLS MANUFACTURED HOME COMMUNUTY
MARKLEEVILLE WATER CO.
OAKLEY MUTUAL WATER COMPANY
KEEFER CREEK ESTATES
BIG OAK MOBILE HOME PARK WATER
YOUTH WITH A MISSION-SPRINGS OF LIVING W
RITE OF PASSAGE/SIERRA RIDGE
KYBURZ MUTUAL WATER COMPANY
PINE GROVE TRAILER PARK
FARRAR PARK PROPERTY OWNERS
GOLD BEACH PARK
FCSA 10 - CUMORAH KNOLLS
FCWWD 37/MILE HIGH
RIVERVIEW MOBILE HOME PARK
BETHEL ISLAND MUTUAL WATER CO
SIERRA MOON MUTUAL WATER COMPANY
LAS PALMAS MOBILE HOME PARK
NEW AUBERRY WATER ASSOCIATION
FOREST RANCH MUTUAL WATER SYSTEM
FCSA 14 - BELMONT MANOR
WEST PARK PROPERTIES
CRYSTAL CAVES MHP
RUSSOS MOBILE PARK
DEL ORO WATER COMPANY - BUZZTAIL DIST.
VOLCANO COMMUNITY SERVICE DIST
FIDDLETOWN COMMUNITY SERVICE
SANDMOUND MUTUAL
BEAR STATE WATER WORKS
LILI VALLEY WATER CO.
DUNROVIN MOBILE HOME VILLAGE
ANGLERS SUBDIVISION 4