Counties → California

Contra Costa County, California

Water Systems

Population Served

565,242

Total Violations

1,010

PFAS Detected

of 8 tested

Water Systems

System Name	Population	Violations	PFAS
CONTRA COSTA WATER DISTRICT	198,000	4	Clean
CITY OF ANTIOCH	115,074	6	Clean
BRENTWOOD	64,513	41	Detected
CITY OF PITTSBURG	62,500	5	Detected
DIABLO WATER DISTRICT	43,357	0	Detected
CITY OF MARTINEZ	30,997	3	Clean
GOLDEN STATE WATER COMPANY - BAY POINT	23,731	7	Clean
TOWN OF DISCOVERY BAY	16,790	6	Detected
PLEASANTIMES MUTUAL WATER CO	644	9	—
EXCELSIOR MIDDLE SCHOOL	600	8	—
CLAYTON PALMS WATER	549	7	—
WILLOW MOBILE HOME PARK	481	8	—
WILLOW PARK MARINA	380	16	—
MOUNT DIABLO STATE PARK	364	24	—
KNIGHTSEN ELEMENTARY SCHOOL	350	38	—
ORWOOD RESORT	350	11	—
DELTA MUTUAL WATER COMPANY	333	24	—
CANYON SCHOOL	238	20	—
RIVERVIEW WATER ASSOCIATION	230	15	—
CAMINO MOBILEHOME	210	16	—
BYRON CORNERS INC	205	21	—
COUNTRY JUNCTION DELI	200	13	—
BETHEL ISLAND ESTATES	200	14	—
BRUNS MEMORIAL AMPHITHEATER	200	0	—
BETHEL ISLAND MHC	185	9	—
LOS VAQUEROS MARINA BLDG	180	0	—
DWR DELTA FIELD DIVISION - BANKS PP	180	4	—
OAKLEY MUTUAL WATER COMPANY	170	19	—
BIG OAK MOBILE HOME PARK WATER	156	13	—
DELTA SPORTSMAN	150	16	—
SUGAR BARGE MARINA	150	4	—
FARRAR PARK PROPERTY OWNERS	140	5	—
RIVERVIEW MOBILE HOME PARK	126	11	—
BETHEL ISLAND MUTUAL WATER CO	123	11	—
GAS N SAVE	120	44	—
CONCORD MT DIABLO TRAILRIDE ASSOC.	120	29	—
EBRPD ALHAMBRA	115	0	—
RUSSOS MOBILE PARK	110	13	—
EBRPD BAY POINT REGIONAL SHORELINE	105	0	—
BETHEL MARKET	100	16	—
DELTA BAR AND GRILL	100	11	—
SANDMOUND MUTUAL	100	12	—
ANGLERS SUBDIVISION 4	99	11	—
BELLA VISTA WATER SYS	93	18	—
MACS OLD HOUSE	90	12	—
EBRPD ROUND VALLEY WATER SYSTEM	82	0	—
NEW LIFE MARINA	80	10	—
CRUISER HAVEN MARINA	75	19	—
BETHEL BAPTIST CHURCH	75	11	—
BRIDGEHEAD CAFE	75	21	—