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22
SECTION C.
SANITARY AND ENVIRONMENTAL
CIRCUMSTANCES.
Water Supply.
I am indebted to the Clerk, and the Director of Water
Examination, Metropolitan Water Board, for the following
information on the supply of water to the Urban District during
the year 1952 :—
" The supply to the district of Chislehurst and Sidcup has
been adequate at all times in 1952 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 on the works, but any
excess 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, Orpington,
Bexley, Shortlands 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 stand-pipes.
Appended are the results of chemical and bacteriological
analyses of the various supplies to Chislehurst and Sidcup during
1952."