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29
Rivers and Streams.—There has been no occasion during the
year to complain of the pollution of any of the streams in the district.
Drainage and Sewerage.—With few exceptions the whole
of the houses in the Borough are supplied with water-closets and
are drained into the main sewerage system. The exceptions are
in the most northerly part of the Mount Park Ward and in the
Greenford and Northolt Wards. A very few houses in the Greenford
Ward remain unconnected with the sewer and the work of connecting
some of these is at present in progress. Little more can be done
in the Northolt Ward until there is an extension of the sewerage
system and it is to be hoped that this will not be long delayed as
some houses draining to cesspools continue to be built.
Sewage Disposal.—There are five separate sewage works
in the Borough, situated at North Ealing (Perivale), South Ealing,
Hanwell, Greenford and Northolt. The treatment of sludge with
the new Sludge Pressing Plant has apparently been successful in
reducing to a minimum the smell arising from the Hanwell Sewage
Works as no complaints have been received since the installation
of this plant.
The Greenford Sewage Works have been further extended
by the addition of two settling tanks, two primary and two secondary
filter beds and two humus tanks. New underdrained sludge beds
have also been formed, the drainage from these being collected
and retreated. The treatment of the sewage with chlorine at these
Works has been continued during the past year and the absence
of complaints would indicate that it has been successful in keeping
down the production of sulphuretted hydrogen which was formerly
given off so freely and caused such bitter complaints from residents
in the neighbourhood.
The existence of a large number of sewage disposal works
of small size in the West Middlesex area and the possibility of
their multiplication in the near future, on account of the extension
of building operations, prompted the Middlesex County Council
at the suggestion of the Minister of Health, to consider in conjunction
with the Local Authorities, the formation of a large main drainage
area for West Middlesex and the establishment of suitable sewage
disposal works of the most modern type. This proposal, which