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11
SECTION 2
SANITARY CIRCUMSTANCES OF THE BOROUGH
WATER.
There are three sources of supply in the Borough. The
Northolt Greenford North, Greenford Central and Greenford
South Wards, most of Perivale Ward and part of Hanger
Hill Ward are supplied by the Rickmansworth and Uxbridge
Valley Water Company with the exception of four roads (in
part) in the Perivale Ward and one road (in part) in the
Hanger Hill Ward which are served by the Colne Valley
Water Company The remainder of the Borough is supplied
by the Metropolitan Water Board These supplies are not
subject to plumbo solvent action and have been satisfactory
both in quantity and quality Water from public mains is
supplied to 53.343 houses with an estimated population of
182, 700
12 samples were taken from wells at 5 factories in
the Borough using water from deep borings ranging in depth
from 300 to 600 feet One sample was not completely satisfactory
but two further samples taken from the same source
proved to be satisfactory.
One sample was taken from the mains supply to a
private house following the receipt of a complaint and
was found.to be satisfactory
The fluoride content of Ealing water is in no part of
the Borough above the level of 1 part per million. This
is the level at which drinking water can be beneficial to
dental caries. a fact which has been well demonstrated in
the United States and Canada which, together with eleven
other countries have water fluoridation schemes
In the United Kingdom there are at present three
areas where fluorine is being added to the water supply,
but no report has yet been issued. The cost in the United
Kingdom has varied between approximately 3½d, and 7½d
per head which is indeed small compared with the cost of
dental services (approximately £1 per head),
DRAINAGE AND SEWERAGE
The soil sewerage from the district flows to the West
Middlesex Drainage Works at Mogden The surface water
finds its way out of the district by the various water
courses.
21 premises are still not connected to the Council's
sewers.