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Reaction for free chlorine; positive, equivalent to 0.20 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. 1
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.
Cl. 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.
No contamination of note was experienced during the year.
All dwelling houses in the district have a direct supply from the
public mains.
Drainage and Sewerage.
The whole of the developed area is soil sewered, except for a small
part containing 17 properties in the extreme south-east 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 1947.
Rivers and Streams.
The negotiations referred to in the previous report were concluded
with the result that, as from 1st April, 1947, the Surrey County Council
took over the maintenance of the River Wandle. Five complaints
were received and adequately 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.
A gradual increase in labour strength and delivery of two reconstructed
vehicles enabled the refuse collection to be improved until
by the end of the year a weekly collection had been practically obtained
for the whole district.
The disposal works was brought into action again in April after
reconstruction and is now giving good service.
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