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1. (i) Water Supply.
The water to the district is supplied by the Metropolitan
Water Board and is derived from several sources
namely Bexley, Crayford, Darenth and Wilmington wells
together with River Thames derived filtered water.
The water supply to this area has been satisfactory in
quality and also in quantity except that in a few localities
pressure has at times been poor. It is hoped to provide
remedial measures in future planning.
Bacteriological analyses are made at least five times
a week from all supplies and in the case of the wells the
water is sampled both before and after chlorination. The
water derived from the River Thames is sampled at each
stage of the purification process and all water is chlorinated
before it leaves the works. All new and repaired mains are
chlorinated before being restored to use and samples of
water from them are tested bacteriologically.
There have been no specific cases of contamination and
the waters are not liable to have a plumbo-solvent action.
During the year 6 samples of water from piped supplies
were taken and submitted to the Public Health Laboratory
for bacteriological examination and all were found to be
satisfactory.
(ii) Drainage and Sewerage.
During the year some 3,C'D0 yards of surface water
sewer have been laid ranging from 9 ins. to 54 ins. dia. The
streets sewered or part sewered are Orchard Rise East,
Chester Road, Danson Crescent, Upper Wiokham Lane,
High Street, Welling and Wickham Lane.
Number of cesspools emptied—14.
The total number of emptyings—38.
2. Rivers and Streams.
No serious pollution was found in rivers or streams
during the year.
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