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receives the effluent from the Sewage Works of
Ewell and Maiden, but there is no pollution of the
stream. No water supply for any purpose is
obtained for the district from it.
Drainage and Sewerage.
Surbiton Sewage Disposal Works.
The Sewage of the District is treated at the
Works in Lower Marsh Lane. A portion of the
Sewage, a little over half the daily flow, is
delivered by gravitation direct into the tanks and
the remainder is pumped. Owing to the increased
population the daily average treated now amounts
to over a million gallons. The process consists of
precipitation in tanks by means of lime, and Alteration
through two series of percolating filters. It
is then discharged through a Humas tank and by
an effluent drain to the River Thames. The precipitated
sluge is ejected from the tanks by compressed
air on to drying beds composed of underdrained
clinkers. After air-drying the sludge is
readily disposed of to farmers in the district who
cart it away free of cost. In connection with the
pumping station there is a House Refuse
Destructor from which sufficient heat is obtained,
with the addition of a small amount of Coke
Breeze in the summer, to produce steam for all the
power plant and the pumping of the Sewage at
the Works.
House Refuse Disposal.
This is now being carried out by means of two
Eiectric Dust Vehicles and two Horses and Carts.