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SANITARY CIRCUMSTANCES OF THE AREA
Report of the Chief Public Health Inspector
1. WATER SUPPLY
Dr. E. Windle Taylor, the Director of the Water Examination Department
of the Metropolitan Water Board, has kindly supplied the following
information regarding the water supply for the district:-
"1. (a) The supply was satisfactory both as to (i) quality,
and (ii) quantity throughout 1970.
(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 the analytical results
are found to be satisfactory.
The quality control of 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 sign of contamination
or any other abnormality is immediately investigated.
(c) (i) The Board has no record of the number of structurally
separate dwelling supplied in your area, but the population
supplied direct according to the Registrar-General's
estimates at 30th June 1970, was 56,500.
(ii) No houses were permanently supplied by standpipe.
(d) No artificial fluoride is being 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:- Lee Bridge Works and between May and
September from Coppermills Works. Well water occasionally
from Chingford Mill and Waltham Abbey pumping stations.
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 the attached sheets.
(b) On account of their hardness content and alkaline reaction
the Board's river and well water supplies are shown to
be not plumbo-solvent. It should, however, be appreciated
that all types of water pick up varying amounts of metal
from the material of water piping particularly when it is
/newly
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