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Reaction for free chlorine; positive, equivalent to 0.2 part per million.
The water was bright and clear and was normal in colour.
Bacteriological examination.
Action by free chlorine during transit of the sample was prevented
at the time of sampling.
Number of colonies per ml. developing upon agar in 2 days at 37° C. ... 0
Number of colonies per ml. developing upon agar in 3 days at 22° C. ... 0
Organisms of the coliform group absent in 100 ml.
Streptococci do.
CI. welchii do.
This water is of high organic purity and its bacteriological condition is excellent.
The water is suitable for the public supply.
The waters are not plumbo-solvent.
Drainage and Sewerage.
No extensions or replacements were made to the drainage or
sewerage systems.
The whole of the developed area is soil-sewered, except for a small
part containing 17 properties in the southern end of the district.
Sewage is pumped to the disposal works of the Croydon Corporation
in Beddington, except at various points on the fringes of the district,
where it is more conveniently drained to the sewage systems of neighbouring
authorities.
Surface drainage is mainly by soakaways in the south, where the
sub-soil is chalk; elsewhere, the district is surface-sewered to the
River Wandle.
No extensions or replacements of any note were made during 1948.
Rivers and Streams.
In April, 1947, the County Council took over the maintenance of
the River Wandle. No specific improvements or cleansing, other than
normal routine, were undertaken during the year.
Five complaints were received and dealt with.
Closet Accommodation.
All premises have water closets connected to sewers, except 17
which are connected to cesspools in non-sewered areas.
Public Cleansing.
Early in 1948, the weekly collection of house refuse, which during
the war had been on a fortnightly basis, was re-introduced. Later in
the year the separate collection of salvage was discontinued, with the
introduction of trailers towed by the normal refuse collection vehicles.
These trailers enabled weekly collection of salvage to be undertaken
by the refuse collectors. Special collections of salvage from trade
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