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19
SANITARY CIRCUMSTANCES OF THE AREA
Water Supplies
The following report is submitted from Dr Windle-Taylor, Diroctor
of Water Examination, Metropolitan Water Board:-
"I can state that the water supplied to the Borough of Chingford
has been satisfactory in quality and quantity during 1964.
The main source of supply is predominantly River Lee - derived
water from the Board's Lee Bridge works repumped at Woodford
Pumping Station, with the addition of well water from Chingford Mill
and, in the south west corner of the Borough, a supply derived from
Perry Lane works in varying and unpredictable proportions from the
well at that station, the River Lee and the New River. The average
analyses of the water passing into supply from these sources are set
out on the attached sheets. The water is not plumbo-solvent.
I regret that I have no record of the number of dwellinghouses
supplied, but all supplies are direct to the houses and none is
permanently supplied by standpipe. (There are 15,095 dwellinghouses
in the Borough and all are supplied by the Board with water direct
to the house. C.P.H.I.)
No new sources of supply were instituted by the Board in your
Borough during 1964 and there were no extensions of important
trunk mains. There were no changes in the general scheme of supply
during the year, but new service mains were laid to the extent of
855 yards.
All new and repaired mains are disinfected with chlorine
before being passed for service, and the water in them is tested
to ensure that it is up to the quality normally supplied."
Fluoride
The average natural content of fluoride in the water supplied in
the Borough is 0.3 milligrams per litre. The accepted amount necessary
for protection against dental caries is 1.0 milligrams per litre.