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39
chlorinated at the Lee Bridge works and Ferry Lane works
and then pumped into supply. An additional amount of water is
supplied to the Ilford area from Ferry Lane and Wanstead
wells. Contact tajiks are in operation at these works in which
the dose of chlorine is able to exert its full effect before the
water passes into the distribution system. During 1959 a
total of 1,528 samples were examined.
All new and repaired mains are chlorinated before
being restored to supply water to consumers and samples
of water from them are tested to confirm that the quality
of the water is up to that normally supplied.
The length of main laid by the Metropolitan Water
Board in Ilford during 1959 was 1,209 yards of 4 inch and 1
yard of 3 inch. "
The water provided to the remainder of the Ilford
district by the South Essex Waterworks Co. is obtained from
the River Stour and from deep wells at Mill Road, Grove
Road and Roding Lane.
Mr. Hugh G. Ramsey, Engineer to South Essex
Waterworks Co. , has kindly supplied me with the following
information.
"During 1959 over 4,130 chemical, bacteriological
and biological examinations were made at the Langham Laboratory,
and all water going into supply was reported as
wholesome. In addition samples were examined for radioactivity.
Samples taken from the wells situated in the Company's
statutory area were analysed weekly and all were
likewise reported on as above; in addition samples were
taken weekly from houses in various parts of the supply
area for bacteriological examination and they were invariably
perfectly satisfactory.
A supplementary supply of water was obtained from
the Metropolitan Water Board during the months of June,
July, August, October, November and December, the total
quantity supplied being 165 million gallons.