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The
Contra Costa Water District (CCWD) serves a population of about
550,000 people in central and east Contra Costa County.
About
265,000 people receive treated water directly from CCWD, and the
other 285,000 receive water the Water District delivers to six local
agencies. CCWD draws its water from the Sacramento-San Joaquin Delta
under a contract with the federal Central Valley Project (CVP),
and as such is particularly concerned about Delta water quality
and the Delta environment.
CCWD is the CVP's largest urban contractor. In 1998, the water district
completed construction of the locally-financed $450 million Los
Vaqueros Project, including a 100,000 acre-foot reservoir, designed
to provide improved water quality and emergency supply reliability
for CCWD customers as well as net environmental benefits.
SERVICE
AREA
Service area: Central and Eastern Contra Costa County, California
Map
TOTAL
AREA OF DISTRICT:
137,127 acres
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WATER
SALES (2009):
Municipal - 22.4 percent
Residential - 47.9 percent
Commercial - 8.6 percent
Industrial - 16.5 percent
Public Facilities and Other - 4.6 percent
NUMBER
OF EMPLOYEES: 323
CAPITAL ASSETS : $1,092m893,744
MAJOR
CUSTOMERS:
Treated
Water: (treated
and distributed by CCWD):
Clayton
Clyde
Concord
Martinez (portion)
Pacheco
Pleasant
Hill (portion)
Port Costa
Walnut
Creek (portion)
A population of approx. 265,000 served by CCWD
The
following communities receive wholesale treated water from CCWD:
Antioch
Brentwood
Golden State Water Company (Bay Point)
Diablo Water District (from jointly owned treatment plant)
Wholesale
Untreated Water Service: (purchasers
of raw water from CCWD for treatment and distribution):
City
of Antioch
City
of Pittsburg
City
of Martinez
Diablo Water District (Oakley)
Golden State Water Company (Bay Point)
A population of approx. 285,000 served by these municipalities.
INDUSTRIAL:
Tesoro Refining and Marketing
Shell Oil
Foster Wheeler
Rhodia
Dow Chemical Company
GWF Power
General Chemical
Calpine
USS Posco
Eight other small industries and businesses
AGRICULTURAL:
Approximately
20 customers
CONTRA
COSTA CANAL:
Part of the Central Valley Project, the Contra Costa Canal is the backbone
of the Contra Costa Water District, delivering water from the Delta to
the District's treatment facilities and raw-water customers. The canal
is a 48-mile long facility that starts at Rock Slough in East Contra Costa
County and ends at the Terminal Reservoir in Martinez. Along the way,
it winds through Oakley, Antioch, Pittsburg, Bay Point, Clyde, Pacheco,
Concord, Walnut Creek and Pleasant Hill. Water is drawn from Rock Slough
near Knightsen (eight miles east of Antioch) and Old River near Discovery
Bay. Rock Slough water travels through a four-mile unlined channel before
entering the concrete-lined section of the canal in Oakley. Old River
water is delivered by pipeline either to the Los
Vaqueros Reservoir or to the Contra Costa Canal in Antioch.
LOS
VAQUEROS PIPELINE:
A 20-mile long buried
pipeline transports water from the Old River intake to a Transfer Station
outside Brentwood, then south to the Los Vaqueros Reservoir and north
to the Contra Costa Canal.
PUMPING
PLANTS:
Four stations lift water 124 feet above sea level from Rock Slough to
the Contra Costa Canal's Antioch summit, after which gravity propels the
water to its terminus in Martinez. The District also operates pump stations
at the Old River intake, Mallard Slough intake and the Los Vaqueros Transfer
Facility, which pumps water into the Los Vaqueros Reservoir.
RESERVOIRS (storage capacity):
Martinez Reservoir: 270 acre-feet
Contra
Loma Reservoir: 2,500 acre-feet
Mallard Reservoir: 3,000 acre-feet
Los
Vaqueros Reservoir: 100,000 acre-feet
Treated
Water Distribution Facilities
Pipelines: 862 miles
Storage Reservoirs: 41
Pump Stations: 31
Connections: 60,342
TREATMENT
Ralph D. Bollman Water
Treatment Plant, Concord, California
Conventional treatment (coagulation, flocculation, sedimentation); dual
media GAC (granular activated carbon) filtration; intermediate ozonation and post ozonation.
Capacity: 75 million gallons per day
Randall-Bold
Water Treatment Plant, Oakley, California
Conventional treatment (coagulation, flocculation, sedimentation); dual
media GAC (granular activated carbon) filtration; intermediate and post ozonation.
Capacity: 40 million gallons per day
(The plant is jointly owned with the Diablo Water District0
CCWD/City of Brentwood Treatment Plant Oakley, California
Conventional treatment (coagulation, flocculation, sedimentation); dual
media GAC (granular activated carbon) filtration; intermediate and post ozonation.
For more information, see the 2009 CCWD
Annual Report
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