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(d) No artificial fluoride is being added, and where the
fluoride content is indicated in the analyses it represents
the naturally occurring fluoride in the water.
2. (a) The supply was derived from the following works and
pumping stations:-
River Thames-derived water from the Thames Valley group
of works.
Weil water from Bexley, Darenth, Deptford, Merton
(occasionally)and Wilmington Pumping Stations.
No new sources of supply were instituted and there were
no changes to the general scheme of supply in your area.
The number of samples collected and the bacteriological
and chemical analyses of the supply from the above sources
after treatment are shown on the attached sheets.
(b) On account of their hardness content and alkaline reaction
the Board's river and well water supplies are shown to be
not plumbo-solvent. It should, however, be appreciated
that all types of water pick up varying amounts of metal
from the material of water piping particularly when it
is newly installed; this applies to copper, zinc, iron and
also to lead.
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