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Routine samples of the treated water in public supply were
submitted quarterly for bacteriological and chemical examination.
In addition, both the Water Companies and the Local
Authorities sharing these public supplies provided the Department
with copies of the reports on the samples taken by them. No
unsatisfactory report was received and no complaints were received
during the year with regard to the quality or quantity of water
supplied by the Companies.
48 samples were taken from the supplies of the two Companies
and examined for hardness by the Department, all of which were
satisfactory in that adequate softening had been carried out as
required by Statute.
Typical chemical and bacteriological reports on the Companies'
water as in public supply are available on request. Coming
from deep wells in the chalk the fluoride content is low.
The Cane Hill Hospital Management Committee has made
arrangements with the Public Health Department of the London
County Council for routine sampling and supervision of the water
supply from the relatively shallow well in their grounds, which is
used exclusively by this Hospital. Adequate chlorination is essential
and steps have been taken to ensure this and to effect closer
co-operation between the officers of the three authorities interested
in the standard of this supply.
RAINFALL.
It appears opportune to record here that the rainfall registered
by the automatic rain gauge installed at Alderstead Heath, was
28 93 inches in 1957, this being a decrease of 0.24 inches compared
with the previous year. The monthly totals throughout
the year were as follows
inches
January 2.55
February 4.27
March 1.74
April 0.23
May 1.70
June 1.11
July 3.69
August.2.75
September 3.18
October 2.14
November 2.94
December 2.63
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