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8
After screening in the Detritus Chamber, the Sewage passes
into six sedimentation tanks (divided into two series of three
in each), these tanks are filled alternately, and the sludge from
them is run on to a sludge area, where it is dried and then sold to
the farmers.
The fluid portion from the tanks falls over a weir on to
the contact beds, and after treatment in these beds it falls on
to the irrigation areas. The final effluent from these areas passes
into a stream which joins the river Pinn.
The effluent is of a fairly satisfactory nature but as some
secondary decomposition was observed in the above mentioned
stream, the Council are considering some suggested improvements
to the present contact beds and irrigation areas.
Water Supply.
Northwood.—The Colne Valley Water Company supplies a
constant service to all of this part of the District except Jacket's
Lane and Duck's Hill.
Eastcote.—The Colne Valley mains are laid along the
following roads: Joel Street, Wiltshire Lane, part of Cheney
Street, Eastcote Main Road from Pinner Green to Ruislip Village,
Chapel Hill, Field End Road, Bridle Road, Frog Lane (the main
in this lane is now being laid), and Catlin's Lane.
Ruislip.—The Colne Valley main runs from Ruislip Village
to the boundary of the parish at West End, also along Wood Lane.
Sharp's Lane and Ickenham Road.
Along Bury Street to Ruislip Common, and it has been
recently extended up Duck's Hill to Horsen's House.
Also along Reservoir Lane and from Ruislip Common to the
"Woodman" Public House.