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F
22
SECTION C.
SANITARY AND ENVIRONMENTAL CIRCUMSTANCES
Water Supply.
I am indebted to the Director of Water Examination, Metropolitan
Water Board, for the following statement and for the
details of analysis of water supplies, which are set out in Appendix 5.
"The supply to the district of Chislehurst and Sidcup has been
adequate at all times in 1950 and is derived from the following seven
wells: Orpington, North Orpington, Shortlands, Eynsford, Bexley,
Wilmington and Darenth, together with Thames-derived filtered water
via Shortlands Pumping Station.
Bacteriological analyses of samples of water at the various stages
of purification of these sources of supply are made at least five times
a week and consistently satisfactory results have been obtained.
Chemical analyses of the samples are also made at frequent intervals.
All supplies are treated with chlorine at the works, but any excess
chlorine remaining after a period of contact is removed completely
or reduced to an amount that will not be perceptible to consumers.
Tanks have been installed at North Orpington, Bexley and Wilmington
to ensure an adequate period of contact of chlorine with the water;
tanks at other well stations are planned or are in the course of
construction.
All new and repaired mains are disinfected with chlorine before
being restored to supply and samples of water from them are analysed
to establish that it is up to the normal standard of quality expected in
the distribution system. None of the supplies is plumbo-solvent.
We have no information with regard to the proportion of the total
number of dwelling houses and population in Chislehurst and Sidcup
which are supplied from each of the above-mentioned sources. All
the houses are supplied directly and not by means of standpipes."
The following information has been supplied by the Clerk to the
Metropolitan Water Board: —
"No new source of public water supply has been instituted in the
Council's area during 1950.
There have been no extensions of trunk mains.
Further lengths of service mains have been laid on the London
County Council St. Paul's Cray Estate and Edgebury Estate. Several
other short extensions have also been laid.
The water supply has been satisfactory as regards quantity.
There are now only three premises with water supplied from
private wells."