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18 SECTION D.
SANITARY CIRCUMSTANCES OF THE AREA.
Water Supplies
Under the provision of Section 138 of the Public Health Act 1936
(as amended by the Water Act 1945) it is the duty of the Local Authority to
ensure that every dwelling in the district is provided with a suitable and
sufficient water supply. In this district the water is supplied by the
Metropolitan Water Board whose Dr, Windle-Taylor, Director of Water Examination,
has submitted the following information:-
"I can state that the water supplied to the Borough of
Chingford has been satisfactory in quality and quantity
during 1962,
The main source of supply is River Lea derived water
from the Board's Lee Bridge works but in addition there
is admixture of water from the Board's wells at Chingford and
Perry Lane, The water is not plumbo solvent,
I regret that I have no record of the number of
dwelling houses supplied but all supplies are direct to
the houses and none are permanently supplied by standpipes,
(There are 14,335 dwelling houses in the Borough and all are
supplied with water direct to the house by the Metropolitan
Water Board, C.P.H.I.)
No new sources of supply were instituted by the
Board in your Borough during 1962 nor were there any
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 546 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.