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20 WATER SUPPLIES, SWIMMING BATHS, AND SEWAGE DISPOSAL
Water Supplies
All parts of the borough are supplied with mains water
serving 93,697 dwellings with an estimated mid 1971
population of 299,450. The supplies are satisfactory in
quality and quantity and are not subject to plumbo-solvent
action. They are derived from four water undertakings:-
1. The Colne Valley Water Company which supplies
small parts of the Peri vale and Horsenden Wards.
2. The Rickmansworth and Uxbridge Valley Water
Company which supplies the remainder of the
Perivale and Horsenden Wards, part of Waxlow Manor
and the whole of the Ravenor, Mandeville and West
End Wards.
3. The South West Suburban Water Company which
supplies the remainder of Waxlow Manor Ward, the
whole of Dormers Wells and Northcote Wards and
part of Glebe Ward.
4. The Metropolitan Water Board which supplies those
parts of the borough not mentioned above.
Ten samples of tap water were taken as a result of
complaints but they all proved to be satisfactory on
examination.
At several factories in the Borough water is obtained
from deep borings ranging in depth from 300 to 600 feet.
Sixty one samples of water taken from these wells were
submitted for bacteriological and chemical examination
with satisfactory results.

Swimming Baths
The Council provide public swimming baths at Ealing,
Acton, Southall and Northolt. Four of the Council's
schools have swimming pools, in addition to one at a
direct grant school.
Residents of a housing estate and a modern block of
flats have private swimming pools as does a sports club.
Throughout the year samples were taken at regular
intervals from each pool and submitted for bacteriological
examination. 205 samples were taken and only 7 proved
to be unsatisfactory. Advice was given on necessary
measures to improve matters, and repeat samples were
found to be acceptable.