C/A
77
-7-
27.
28.
of consumption in that period would be entirely insufficient.
Having regard to the potentialities for development and the
increase of consumption between 1928 and 1930 two years in
which there were no restrictions we would take 160 M.G.
per annum as a conservative figure of increase for the next
fifteen years.
The consumption for 1930, including the Water Boat Station, waв 1,654 M.G. or 4'65 M.G.D.
By 1936 the requirements will have reached 2,654 M.G.
per annum or 7°3 M.G.D., and by 1945 the estimated requirements
will be 4,094 M.G. per annum or 11'2 M.G.D.
Filters.
29.
30.
31.
The slow sand filters are capable of dealing with
2.9 M.G.D., and the rapid gravity filters recently completed,
bring the total capacity up to 7'9 M.G.D. or, to cover seasonal fluctuation, to 6'5 M.G.D. as an average annual figure.
This capacity gives a small margin over the yield
of the existing sources and is equal to the estimated require-
ment for 1934.
As the Administration Building at the Shek Lai Pui
Rapid Filters will serve the second instalment of filter units,
we would recommend that the arrangements for the completion of
that second instalment of 5 M.G.D. capacity be initiated so as to permit of the filters being available as soon as possible.