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been made to them. Other ameliorative measures effected
include:—the reduction in working pressure of an air compressor,
the elimination of fumes from a gas heated degreasing tank, the
provision of rubber tyred wheels to a metal trolley, the lagging
of a cyclone extraction plant to reduce noise.
The foregoing observations are in no way intended to be
exhaustive as details have been set out in previous reports but
they are indicative of the problems to be faced.
Generally speaking, factory managements are prepared to
meet the situation provided remedies can be applied at reasonable
cost, which is as far as the law administered by the local authority
goes, but experience has shown that even with the best expert
advice it has not always been possible to obtain the desired
results.
7. WATER SUPPLY. The water supply of the Borough,
which is provided by the Colne Valley Water Co., except for a
small area in the southern end of the district supplied by the
Rickmansworth and Uxbridge Valley Water Co., remained satisfactory
in quality and quantity. The supply is pumped from
deep wells in the chalk outside the Borough boundaries. All of
the samples taken from piped supplies were reported as satisfactory.
No tendency to plumbo solvent action has been detected.
All dwelling houses in the Borough are provided with a mains
water supply.
There are a number of private wells in the Borough all in
connection with industrial undertakings, but in no instance is the
water from these sources used for drinking.
8. SWIMMING POOLS. I am indebted to the Borough
Engineer and Surveyor for the following observations concerning
the Corporation's outdoor Swimming Pools:—
"As a result of recommendations by the Medical Officer of
Health the Council installed "breakpoint" or superchlorination
equipment in the Vale Farm and Kingsbury Swimming Pools
immediately prior to the 1951 season. After two seasons of
practical experience in operation of this "breakpoint" system of
chlorination, it is possible to-report excellent results. It is now
possible to maintain sparkling clear water, bacteriologically satisfactory
at all times, even during times of high bathing load.
"As a result of the new system of chlorination the two Swimming
Pools in the Borough have been brought into line with the
latest developments in public health practice and control, and the
risk of contracting infection at the Pools is negligible."
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