Evening star., 1946-02-19
Water System
Continued From First PAGE ]

from the present 1876 100000 GAL
Ions daily to 342,OO0,0 900 gallons
daily.
The water collection program, in
cluding the Little Falls Dam, will
replace an earlier plan to build a
third raw water conduit from Great
Falls.
Expenditures under the program
contemplates $22,000,000 for water
supply and $19,000,000 for distribu-
tion facilities. The 43-year sched-
ule is broken down into four stages,
along with outlays as follows:
1947-1950, $13,000,0O0; 1s5I-1955,
$14 100000; 1956-1961, $1o,400, 900,
and 1926-199o, $4,000 900. Largest
outlay for any one year is s4,0OO,OO0
and expenses taper down to $50 900
annually in later stages.
In the flve-year period over which
the proposals were developed, ex-
tensive studies were made of popu-
lation trends of the District and
Arlington County. Consideration
was also given to the possibility
that the District may have some
day to provide water for parts of
Fairfax County Unless changes
are made in the current coming
laws, it was stated, population sat-
uration Is expected about the end
of the century for the District and
Arlington.
Future Revenues Considered,
Full consideration was given, ac-
cording to the report, to expected
future revenues, maintenance and
operating costs, limitations on loans
so that an economically sound fl
nancial program would be evolved
without an increase in water rates"
Because the two existing conduits
can deliver only 283, ,00O, 900 gallons
daily to the city filters when later
requirements will be 427 900 900, the
expansion Of supply was made rlec-
essary. The study said the most
economical and most desirable
method" will be to pump from a
pool behind a dam to be built at
High Island, just above Little Falls,
where the present loose rock feeder
dam for the Chesapeake 81 Ohio
canal is located. From this point,
in addition to a pumping station,
a pipeline and tunnel only a hall
mile long will be needed to deliver
the raw water to Dalecarlia Reser-
voir.
The entire improvement program
for the Dalecarlia area will cost
about s13,482,000 and will not be
complete until 1861.
Improvements planned in 1853
and 1856 will protect the reservoir
from the menace of polluted flood
overflow from Little Falls branch,
whose watershed extends all the
way to Woodrow Wilson High
School. Residential developments
and street paving in the area in the
last few years have caused such
concentration of water that the
present tunnel under Brookmont
Hill is not big enough to carry off
the flood water from the reservoir
Improvements here will be made in
1858. In 1856 an intake and screen
house to keep ice and debris from
clogging up the entrances to the
Great Falls conduits will be built.
Cost of the two projects will be
about $4,000
Plant Al Years Old.
The Mcmillan slow sand filtration
plant was placed in operation in 1905
as the city's first such installation
1t furnished all the purified water
until the filter plant was later con-
structed at Dalecarlia. To improve
the capacity at Mcmillan, it was
said, it will be necessary to reduce
the sediment in the water flowing
from the Georgetown Reservoir on
Macarthur boulevard through the
four-mile tunnel to the filter. The
sedimentation facilities are due for
modernization by 1850.
The 40-year-old Bryant street
pumping station, now oldest station
in the waterworks system, is due for
modernization and a doubling of its
capacity. It's improvement has high
priority and is due for completion
along with the Mcmillan ano
Georgetown reservoir work by 1856
so that this part of the system car
take over the additional load when
construction reduces the output al
Dalecarlia. Cost is estimated al
$2,54300
Across the Anacostia River. the
existing auxiliary pumping station
is slated for complete revafnping tx
supply better the high ground area.
of Anacostia territory. Similar
treatment is due for the old station
at Fort Reno where a proposed 40,'
000, 900 gallon reservoir on the high.
est land in the District will extene
over the location of the presen
situation. The two pumping sta
ton projects will be done by 1876.
at cost of $661 ,000
i $15,655,0 600 for Pipe Lines.
| Water is now pumped to Distric
consumers through some 1,060 mile
of water mains Principal addition
to the distribution system will b,
the cross-town trunk main between
Dalecarlia and Bryant Street which
; the planners say is essential "fo
f.