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WATER SUPPLIES
Contributed by Dr. E. Windle Taylor C.B.E., M.A., M.D., D.P.H., F.C.Path.
Director of Water Examination, Metropolitan Water Board
The supply was satisfactory both as to quality and quantity throughout 1966.
It was derived from the following works and pumping stations
River Lee water from Lee Bridge Works with some well water from Ferry Lane Pumping
Station and Chingford Mill Pumping Station, except for a small portion of Lower Chingford adjoining
Sewardstone Road north of Kings Head Hill, which is in supply with River Thames derived water
under Sewardstone Green reservoir head.
No new sources of supply were instituted.
The number of samples collected and the bacteriological and chemical analyses of the
supply from the above sources after treatment are shown on pages 92&93. No fluoride was added,
and where the fluoride content is indicated it represents the naturally occurring fluoride in the
water.
The supply being hard in character is not liable to be plumbo-solvent.
All new and repaired mains are disinfected with chlorine, after a predetermined period of
contact the pipes are flushed out and refilled; samples of water are then collected from these
treated mains; and the mains are returned to service only after results are found to be satisfactory.
The quality control from these laboratories is carried out by means of daily sampling
from sources of supply, through the treatment works or well stations, from the distribution system,
and through to the consumer. Any sign of contamination or any other abnormality is immediately
investigated.
The population supplied direct by the Board according to the Registrar General's
estimates at 30th June, 1966, was 239,520.
No houses were permanently supplied by standpipe.
There were no changes to the general scheme of supply in the area.
The following additions to the mains in the area took placer:-
Trunk Mains - 1,560 yards of 12" main, along the North Circular Road from the Crooked
Billet roundabout to the entrance of Greaves Pumping Station, in duplicate of the existing 12"
main.
Other Mains - 512 yards.
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