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SANITARY CIRCUMSTANCES OF THE AREA
Water Supply. The water supply is mainly derived from
the deep wells in the chalk of the Sutton District Water Company,
situated at Sutton, Cheam and woodmansterne. A small area in
the North Ward Is supplied by the Metropolitan Water Board,
The water from all wells of the Sutton District Water
Company is softened to nine degrees of hardness. Chlorine is
applied in the form of chloramine as a protective measure.
Samples of the raw and treated waters are examined daily
by the laboratory at the Sutton works. Samples are also examined
at monthly intervals by the Company's Consultant Analyst, and
monthly samples are examined in rotation by the District Councils
In the area of supply.
The supply from all sources has been satisfactory in
quality and quantity. All the dwelling houses have a direct
supply from the public mains. Below is the average of monthly
analyses.
Chemical Results in Parts per Million Average
Total Solids 190,83
Ammonia, free 0.13
Ammonia, Albuminoid 0.00
Nitrogen in Nitrates 7.55
Nitrogen in Nitrites 0.00
Oxygen Absorbed 0.13
Chlorine in Chlorides 18.75
Hardness total (grains per gallon) 8.13
Bacteriological Results
No, of Bacteria growing on Agar per ml. for
3 days at 20° C 2
No. of Bacteria growing on Agar per ml. for
1 day at 37° C 0
Presence of Bacillus Coll in 100 ml. 0
Swimming Baths. Satisfactory control over residual
Chlorine and pH has been maintained in the two swimming baths.
Two samples taken at peak periods of attendance gave satisfactory
chemical and bacteriological results.
DRAINAGE AND SEWERAGE
Worcester Park Sewage Disposal WorkS. During the year the
work on Stage 1 of the Scheme for the reconstruction of the
Worcester Park Sewage works was completed, as a result of which
a greatly improved effluent is now being discharged to the
Beverley Brook,
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