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14
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 satisfac
tory both in quantity and quality. Water from public mains
is supplied to 53,983 houses with an estimated population
of 183,000.
9 samples were taken from wells at five factories in
the Borough using water from deep borings ranging in depth
from 300 to 600 feet The analysis showed that the supplies
were wholesome in character.
5 samples were taken from different points in a School
Kitchen and these were found to be satisfactory.
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,
RIVERS AND STREAMS.
The passage of a river through industrial areas has
inevitably resulted in such waterways being used to a
greater or lesser extent as sewers. With the taking of
surface water drainage into such rivers it is always
possible for soil drainage, where wrongly connected, to
lead to considerable faecal contamination, and for industrial
wastes to lead to chemical contamination. This has
happened in the Ealing portion of the River Brent and in
districts through which the river runs before its entry
into Ealing. It is clear therefore that even under the
very best conditions it would be unwise to trust the
River Brent as a "safe" river.