View report page

23
"The supply during 1948 was adequate at all times. The
Borough is supplied in three zones: the low zone from Deptford
well and by Thames-derived filtered water; the Eltham zone from
Wilmington, Darenth and Bexley wells with an additional small
proportion from the low zone should occasion arise, and the
Bromley zone to the south of the Borough from Shortlands well
and on occasion with additional Thames-derived filtered water.
"All the Thames-derived filtered water is chlorinated as it
leaves the works. All the wall water is chlorinated and any residual
chlorine should wholly or almost completely be removed before
the water leaves the works.
"Bacteriological analyses are made five times a week of all
supplies and consistently satisfactory results have been obtained.
Chemical analyses are also made at regular intervals. In the case
of the river-derived supply the water is tested bacteriologically and
chemically at all stages of purification. All new and repaired mains
are chlorinated before being restored to use and samples of water
from them are tested bacteriologically.
"None of the supplies is plumbo-solvent. All the houses
are supplied directly and not by means of stand pipes. The closest
watch is kept for any form of contamination and immediate action
is taken if the results of the analyses are not up to standard.
"Appended are the average results of the chemical and bacteriological
analyses of the various supplies for 1948 as forwarded
by the Metropolitan Water Board."