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The following is the report on a representative sample taken by the
Council's Public Health Department:—
(a) Physical Examination
Colour Faint blue Taste normal
Appearance Bright and clear Smell none
Electric Conductivity at 20 °C 295 reciprocal megohms.
(b) Chemical Examination in parts per million
Total solids dried at 180°C 230
Chlorine in Chlorides as Chlorion 20.0
Nitrite Nitrogen 0.0
Nitrate Nitrogen 10.5
Ammoniacal Nitrogen 0.00
Albuminoid Nitrogen 0.01
Oxygen absorbed in 4 hours at 27 °C 0.08
Alkalinity as CaCO3 68
Hardness as CaC03— Carbonate 68
Non-carbonate 68
Total 136
Free Carbon dioxide as CO2 —
Residual Chlorine Trace
Iron None
Other metals None
(c) Bacteriological Examination
Number of colonies developing per millilitre of water
on agar in 2 days at 37 °C 0
on agar in 3 days at 22 °C 0
Bacteria of indication enumeration :—
Organisms of the coliform group 0 per 100 ml.
Streptococci 0 do.
CI. welchii 0 do.
Remarks :
This water is of good organic purity, attractive in appearance and is free from
contaminating metals. It is of very moderate hardness and salinity.
The bacteriological condition of the water is excellent.
As judged by this examination, the water is pure and wholesome and is suitable for
the public supply.
Owing to the increasing demands, the Company is now seeking
powers to sink another well in Woodmansterne Road from which they
hope to extract an average of two million gallons per day.
Drainage and Sewerage
Sewage is pumped to the disposal works of the Croydon Corporation
at Beddington by way of two 21" mains. The pumping machinery is electrically
driven and difficulty has been experienced in recent years through
breakdown of the electric power. When such a breakdown lasts for more
than a few hours as it did on the 26th January, 1963, the pumping station
becomes flooded and crude sewage finds its way by gravitation to the
adjoining River Wandle. Unfortunately in the absence of any constructed
channel it does so by way of the gardens and surrounds of several houses
in Buckhurst Avenue. To guard against this risk the Council have authorised
the installation of stand-by diesel generators. Meantime a portable
generator was hired to cope with any such emergency pending the completion
of the new generator. Leaks which occurred at the joints in the
21" mains located in Messrs. Mullards works were repaired and consulting
engineers are investigating the cause of the joint failures. An application
was made to the Surrey County Council for permission to construct an
emergency overflow from the pumping station to the River Wandle, should
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