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5
The only possible source of contamination of water obtained
from the chalk would be through " swallow-hole.s," which are
cavernous openings commonly found at the junction of the Reading
beds and the chalk, into which streams disappear. One of
these " swallow-holes " is found near North Mimms, where water
from nearly 20 square miles of land disappears. Frequent examinations
of the water are made so that contaminations may
be at once detected. Although the rainfall was so low, there was
no interruption or restriction in the water supply during the year.
Drainage and Sewerage.
The District is sewered and drained ort the separate system.
The sewage is conveyed to an irrigation farm of fifty acres
in area at Brunswick Park, and turned on to the land. It is
passed through percolating filters, and finally into Pymms Brook.
Samples of the effluent are occasionally taken by the Lee Conservancy
Board, but no complaints have been received. The surface
water drainage is conveyed to Pymms Brook by several
brooklets. These are constantly inspected and kept free from
objctionable matter.
Scavenging.
The house refuse is collected weekly by the Council's own
staff and conveyed to the tip at the sewage works situate at
East Barnet.
The disposal of refuse matter becomes more and more
difficult each year. At present it is burnt. Housewives could do
much to help by burning as much as possible all combustible
matter.
Industries and Occupations.
The industries carried on within the District are at the
factories of Messrs. Carr and Son, also Messrs. Tyler and Co.,
at Brunswick Park. The new factory of Messrs. Maw, Son and
Sons has been completed. The factories and workshops in the
District (including laundries and bakeries) number 129.
These are periodically inspected, and the condition of employment
found generally satisfactory, and no special circumstance
exists which is prejudicial to public health.