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1969 1970
Average daily consumption 58,105 C.M.D. 58,582 C.M.D.
for year (12,783,000 G.P.D.) (12,888,000 G.P.D.)
Average daily consumption 79,350 C.M.D. 85,105 C.M.D.
during week of maximum demand (17,457,000 G.P.D.) (18,723,000 G.P.D.)
Maximum daily consumption 88,000 C.M.D. 98,554 C.M.D.
(19.360,000 G.P.D.) (21,682,000 G.P.D.)
The maximum daily consumption shown above is the highest for any one
day in the history of the Water Company, being 15% higher than the
maximum in 1969. The continued and heavy increase in demand for water
was brought about almost entirely by the use of hosepipes and sprinklers
for garden watering.
5. Population Supplied - The following table gives the estimated population
supplied in 1969 and 1970 based on information furnished by local
authorities, hospitals and institutions.
December 1969 300,538
December 1970 301,040
The average estimated number of persons per house for the Company's area
as a whole is 3.1. This is considered to be a reasonable figure in keeping with
the returns of the Registrar General for this area.
In relation to those parts of the Borough at Worcester Park and on the St. Helier
Estate at the northern end of the former Carshalton Urban District Council's area, Dr. E. Windle
Taylor, Director of Water Examination to the Metropolitan Water Board, has supplied the
following information:-
1. (a) The supply was satisfactory both as to quality and quantity throughout
1970.
(b) 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 the analytical results are found
to be satisfactory.
The quality control from these laboratories is carried out by means
of daily sampling from sources of supply, from 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.
(c) (i) The Board has no record of the number of structurally separate
dwellings supplied in your area, but the population supplied direct
according to the Registrar General's estimates at 30th June, 1970
was 1,918.
(ii) No houses were permanently supplied by standpipe.
(d) No artificial fluoride is being added, and where the fluoride conient
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 Hampton, Walton and
Surbiton, and well water from Merton pumping station.
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