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97
ENVIRONMENTAL HEALTH
1. WATER SUPPLY.
The whole area is served by the Metropolitan Water Board
through a piped main supply. Regular chemical and bacteriological
examinations are carried out by their Water Examination
Department but in addition to this on thirteen occasions samples
were taken during the course of the year from private houses, a
children's home and schools (special, technical and primary)
from kitchens and cloakrooms and all samples were satisfactory,,
A chemical analysis made on water from a children's home
was satisfactory, the water is not plumbo-solvent and no lead or
other contaminating metals were found. The water is also good
in appearance and organic content.
The Minister of Health in a circular in November reminded
Local Authorities that the upper limit of lead in water is
0.1 mg/l. but that where lead piping is used the amount may be
higher, but not more than 0.3 mg/l. after 16 hours. The World
Health Organisation now gives a revised figure of 0.05 mg/l. as
the upper limit in drinking water supply and as far as is known
no supply in this country from a statutory undertaking exceeds
this amount.
2. SWIMMING BATHS.
(a) Public. The Corporation's indoor swimming baths are
situated in Denmark Road, Kingston upon Thames and comprise two
pools, one of which is in use throughout the year, whilst the
other is used for swimming during the summer months, and in the
winter season is converted for use as a hall for concerts,
dancing and other purposes. In addition there is an instructional
pool.
The baths are equipped with pressure filters capable of
treating the water of both pools every hours during bathing
periods. In hot weather the filters are working continuously
day and night. Chlorination is marginal and the residual
quantity is maintained at the deep end of the baths with a maximum
of 0.6 parts per million free chlorine.