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Road, being removed for improvements at this road junction.
Refuse Disposal.
Operation of the Charlton Plant continues satisfactorily and
although there was a recession in the price of paper and steel
further reducing the income from salvage, such income is nevertheless
still worth while.
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 primary or 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.
INDUSTRIAL HEALTH
Factories,
There are 309 factories in the Borough most of which are engaged
in light industries, such as the manufacture of electrical
components, piston rings, aircraft parts, name plates and bakery
furniture.
The number of persons employed in these factories ranges from
680 in the largest to one or two in the smallest. Periodic
inspections of factory premises are made to see that proper sanitary
accommodation is provided and those factories which do not use
mechanical power are inspected for cleanliness, avoidance of overcrowding,
adequate ventilation and proper drainage of floors.
During 1958 the inspectors paid 229 visits to factories.
GENERAL MATTERS
Housing
Further progress was made during the year in dealing with
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