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(b) School Baths. One private school has a small swimming
bath which is used only by scholars and staff. Sterilisation is
by hand dosing with chlorine with changes of water as necessary.
Ten samples were taken by the Health and Welfare Department to
ensure adequate chlorination and fitness for bathing. all of which
proved to be satisfactory.
There are also three swimming baths at primary schools with
treatment plants, an additional one having been constructed this
year. Twenty-three samples were taken during the year of which
four were not satisfactory but these latter samples were taken at
a time when the baths were not in immediate use and treatment had
been suspended.
3. RIVERS AND STREAMS.
The River Thames forms the western boundary of the Borough and
is under the control of the Thames Conservancy Board. The Hogsmill
Riverj, a tributary of the Thames, for some two miles forms
the eastern boundary and thence flows through the Borough. In
dry weather a considerable portion of the flow of this river comprises
the effluent from the Hogsmill Valley Sewage Treatment Works.
The Beverley Brook, another tributary of the Thames, forms part of
the eastern boundary and receives the effluent of the Worcester Park
Sewage Disposal Works.
4. DRAINA&E AND SEWERAGE.
With the exception of a small quantity which is disoharged to
the sewage disposal works of the London Borough of Sutton at
Worcester Park and to the Greater London Council Wandle Valley Works,
the sewage of the district is treated at the Hogsmill Valley Sewage
Treatment Works. This modern plant also deals with the sewage
from the Borough of Epsom & Ewell.
There are a few houses which use ceaspools, but the remaining
houses in the Borough are connected to the main sewage system.
5. PUBLIC CLEANSING.
The Borough Engineer and Surveyor is responsible for the
collection and delivery of refuse to a central loading point from
whence it is hauled in large vehicles to tips operated by contractors
employed by the Greater London Council,, who are now responsible for
the disposal of refuse.
The total amount of refuse passing over the weighbridge during
the year ended 31st December, 1966 was 44.540 tons.