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29
National Assistance Act, 1948—section 47
Several possible cases were investigated during the year, and in
one instance it was necessary to apply to the court for an order for compulsory
removal.
Dog nuisances
No proceedings were taken during the year, although complaints
were received of the condition of certain roads.
Drainage work
During the year 147 plans were submitted to the public health
inspectors for examination and approval.
Water supply
I am indebted to the Director of Water Examination of the
Metropolitan Water Board for the information on which the following
report on Lewisham's water supply is based.
The water supply to Lewisham is divided into three zones ; the low
zone is supplied from Deptford well and by Thames-derived filtered
water; the Eltham zone is supplied from Wilmington, Darenth and
Bexley wells and, should the occasion arise, with a small proportion from
the low zone; the Bromley zone to the south of the Borough is supplied
from Shortlands well and again on occasions with additional Thamesderived
filtered water.
All the well water is chlorinated and contact tanks are provided.
Finally, any residual chlorine is completely removed or reduced to a
level that would not be noticeable to consumers before the water leaves
the works.
Bacteriological analyses are made at least five times a week and in
the case of the river-derived supplies, the water is analysed at all stages
of purification. All new and repaired mains are chlorinated before being
restored to use and samples are collected for analysis to establish that
the quality of the water is up to the standard normally supplied.
None of the supplies is plumbo-solvent.
Tables 20 and 21 show the average results of the chemical and
bacteriological analyses of the various supplies as forwarded by the
Metropolitan Water Board: —