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It was not found necessary to serve any notices under the Act.
The sewers in the Borough were treated twice during the year.
WATER SUPPLY.—All drinking water in the Borough is supplied
from the Metropolitan Water Board's mains and the Director
of Water Examination (E. Windle Taylor, C.B.E., M.A., M.D.,
D.P.H., M.R.C.S., L.R.C.P.), has kindly supplied the following
report and figures.
The water is derived from the River Thames, stored in the
Board's reservoirs in the Thames Valley and filtered and chlorinated
at the Board's works at Hampton and Ashford Common.
The water supplied to the Borough during 1964 was satisfactory,
both in quality and quantity. There were no new sources of supply
instituted by the Metropolitan Water Board during the year, nor
any new important extensions of trunk mains. The general scheme
of supply was the same as during 1963 but 853 yards of service main
were laid in Paddington during 1964.
SOURCE OF SUPPLY
Hampton Ashford
Chemical Examination Common
Number of samples 53 53
Ammoniacal nitrogen 0.041 0.066
Albuminoid nitrogen 0.075 0.088
Nitrate nitrogen 6.0 4.4
Chlorides as Chlorine 34 33
Oxygen absorbed from KMn04
(four hours at 27°C.) 1.06 1.16
Turbidity units 0.1 0.2
Colour—Burgess Scale 11 11
Hardness (total) 268 272
Hardness (non-carbonate) 64 64
pH value 7.6 7.7
Phosphate as PO4 1.4 1.3
Silicate as SiO 2 9 7
Sulphate as S04 60 62
Natural Fluoride as F 0.25 0.25
Magnesium as Mg 5 5
Surface active material as
Manoxol OT 0.09 0.09
Electrical conductivity (micromhos) 550 550
The above figures are given as milligrammes per litre unless
otherwise stated.
Bacteriological Results (after treatment)
Number of samples 1.109 773
Agar plate count per ml. (20—24 hours at
37 °C.) 13.4 16.3
Coliform count—per cent, samples negative
in 100 ml. 100.0 99.87
E. coli count—per cent. samples
negative in 100 ml. 100.0 100.0