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'No new sources of supply were instituted and there were
no changes to the general scheme of supply in the area.
'Eight thousand five hundred and ninety samples were collected
for bacteriological and chemical analyses of the supply
during the year.
On account of hardness content and alkaline reaction the
Board's river and well water supplies are not considered to
be plumbo-solvent. It should, however, be appreciated that
all types of water pick up varying amounts of metal from the
material of water piping particularly when it is newly installed;
this applies to copper, zinc, iron and also to lead. Surveys
carried out between 1966 and 1968 on analyses of water from
consumers' premises confirmed this statement.'

The Council-owned swimming baths are closely controlled by
the Department concerned, and the co-operation of the Baths Manager
in taking action in respect of unsatisfactory samples is gratefully
acknowledged.
During August, 1969, the unsatisfactory condition of the boating
pool in Ravensbury Park, fed by the River Wandle, caused some
concern. The unsatisfactory state of effluent discharged from Beddington
Sewage Works, combined with warm climatic conditions, caused
humus on the river bed to rise and form a thick scum.
Samples of the water were examined bacteriologically, and they
were found to be unsatisfactory. Subsequently, the Director of Parks
and Cemeteries was advised to close the boating pool and this was
done for the remainder of the season. As a result of discussions and
correspondence, and the examination of further water samples, it was
hoped that conditions will so far improve as to allow the boating pool
to be used again next season.
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