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21. WATER SUPPLIES, SWIMMING BATHS
AND SEWAGE DISPOSAL
WATER SUPPLIES
Four water undertakings supply the borough with mains water. The Colne Valley
Water Company supplies small parts of Perivale and Horsenden Wards. The Rickmansworth
and Uxbridge Valley Water Company supplies the remainder of Perivale and Horsenden Wards,
part of waxlow Manor ward and the whole of Ravenor, Mandeville and west End Wards. The
South West Surburban Water Company supplies the whole of Dormers Wells and Northcote
wards, the remainder of Waxlow Manor Ward and part of Glebe Ward. The Metropolitan
water Board supplies all other areas of the borough not already mentioned.
These public supplies have been satisfactory in quality and quantity and are not
subject to plumbo-solvent action. water from public mains was supplied to 91,859
dwellings with a mid-1969 estimated population of 297,910.
Private supplies are derived from wells at factories in the borough. In these
factories water is obtained from deep borings ranging in depth from 300 to 600 feet.
Of 83 samples of water from these wells submitted for bacteriological and chemical
examination during the year 15 were found to be unsatisfactory and 1 doubtful. After
thorough cleansing and sterilization of supply pipes, repeat samples proved to be
satisfactory.

SWIMMING BATHS
The Council has public swimming baths at Ealing, Acton, Southall and Northolt.
In addition, at four of the Council's schools there are swimming pools, and there
is also a pool at one direct grant school.
Private swimming pools are provided for the residents of a housing estate, and at
a modern block of flats.
The Department took samples of water from each pool at regular intervals throughout
the year and these were submitted for bacteriological examination.
A total of 180 samples was taken of which only 6 were unsatisfactory. In the
latter cases repeat samples were found to be acceptable and advice was given where
necessary.
The results are as follows:-
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