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39
The water will be normally abstracted from the river from
November to May, when a large amount of surplus water is available,
and the large reservoir is for the purpose of storing the water
so abstracted for use at other times of the year. The scheme further
authorises the construction of three pumping stations, filtration
plant and about 26 miles of pipe lines.
It is not anticipated that the scheme will come into supply
before 1940.
(ii) Drainage and Sewerage.—The Borough Engineer has
kindly supplied me with the following report.
(a) Sewage Works Generally.
Several small sewer extensions have been connected up to the Seven
Kings Valley Sewer in the north-east part of the district, and to the MidLevel
Sewer in the north-west part of the district.
Owing to the growth of the district, some of the main trunk sewers
are now overcharged and the preparation of a scheme for the reconstruction
of these sewers has been commenced. A scheme is also in course of preparation
for the reconstruction of the Roden Street Pumping Station, including
new rising mains.
(b) Ilford and Barking Joint Sewerage Scheme.
The Ilford and Barking Joint Sewerage Scheme has now been completed.
The connections from the Ilford Sewers have been completed and the whole
of the Ilford Sewage has been discharged into the Joint Pumping Station
since the 25th July, 1935. The average dry weather flow amounts to
4f million gallons per day at the present time, and the installation is now
working satisfactorily.
The surplus plant at the Ilford Sewage Works has been disposed of and
negotiations are in progress for the sale of the site.
2. Rivers and Streams.—Vide Annual Report, 1925.
(a) Seven Kings Stream.
Pollution by sewage is still taking place outside the Borough boundary.
Request has been'made from an outside Local Authority to the Borough
Council to take the sewage from several of the houses in the Chigwell area
causing this pollution, and the Council has agreed to connect them into
the Seven Kings Valley Sewer.
This has not yet been carried out