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111
WATER SUPPLY
I am indebted to Dr. E. Windle Taylor, Director of Water Examination,
Metropolitan Water Board, for the following report on the water supplied by the
Board to the Borough of Lambeth during the year
"The Report relates to the Board's direct supply to the Lambeth administrative
area and its several parts. The information does not relate to private supplies
and supplies from other Water Undertakings (if any).
1. (a) The supply was satisfactory both as to (i) quality, and (ii) quantity
throughout 1968.
(b) All new and repaired mains are disinfected with chlorine; after a predetermined
period of contact the pipes are flushed out and refilled; samples
of water are then collected from these treated mains; and the mains are
returned to service only after results are found to be satisfactory.
The quality control from these laboratories is carried out by means of
daily sampling from sources of supply, from the treatment works or well
stations, from the distribution system, and through to the consumer. Any
signs of contamination or any other abnormality is immediately investigated.
(c) (i) The Board has no record of the number of structurally separate
dwellings supplied in your area, but the population supplied direct
according to the Registrar General's estimates at 30th June, 1968,
was 329,246.
(ii) No houses were permanently supplied by standpipe.
(d) No artificial fluoride was added, and where the fluoride content is
indicated in the analyses it represents the naturally occurring fluoride in
the water.
2. (a) The supply was derived from the following works and pumping stations
River Thames (Southern Group)
Honor Oak Well
No new sources of supply were instituted and there were no changes to
the general scheme of supply in your area.
The number of samples collected and the bacteriological and chemical
analyses of the supply from the above sources after treatment are shown
on Tables A and B below.