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work chiefly in tunnel along Amyand Park Road, and some 1140 yards
of reinforced concrete pipes 36" and 30" in diameter have now been
laid.
It is anticipated that this work will be completed in 1960.
The diversion of foul and surface water sewers in the vicinity
of London Road has been completed so as to permit of the con
struction of the railway bridge. The widening of that road and the
construction of the new bridge is now awaited.
Public Conveniences
Work on the construction of new conveniences in Water Lane
is well advanced and it is anticipated that these Conveniences will
be in use early in 1960, when the Conveniences at the junction of
York Street and London Road will be removed for the improvement of
that junction.
Free washing facilities complete with hot water, towels and
soap have been provided at the conveniences behind the cinema in
the High Street, Whitton and similar facilities will be available
at Water Lane when the new convenience is completed.
Refuse Disposal
Operation of the Charlton Plant continues satisfactorily and
during the year there was an improvement in the price of certain
salvageable materials and improved income for the year is therefore
envisaged.
WATER SUPPLY
I am indebted to Dr. E. Windle Taylor, M.A., M.D., D.P.H., M. R.C.S.,
L.R.C.P. Director of Water Examination, Metropolitan Water Board,
for the following report:
The source of water is the River Thames abstracted at the
Wraysbury, Walton and Laleham intakes and stored in the Thames
Valley reservoirs at Staines, Littleton and Walton. After storage
the water is treated at the filtration works at Hampton.
The water is filtered by means of rapid filtration followed
by secondary or slow sand filtration. All water is finally
chlorinated before it leaves the works. In order to provide adequate
contact to ensure complete action by the chlorine a contact
tank is provided at the works. The water is treated by a method of
controlled superchlorination by maintaining a fixed residual of
free chlorine after a given period of contact. The chlorination
process is entirely automatic both in regard to changes in quality
as well as changes in quantity of the filtered water.
Samples of water are collected at all stages of the purification
process at least five times each week and analysed at the
Laboratories of the Metropolitan Water Board.
The supply is not plumbo-solvent.
All new and repaired mains are disinfected with chlorine before
being restored to supply and samples of water from them are tested
to establish that its quality is up to that normally supplied.
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