View report page

LABORATORIES
The Public Health Laboratory, Epsom, serves the Borough for
bacteriological examinations. This service is supplemented by
the use of the laboratories at Sutton and Cheam Hospital and St.
Heller Hospital.
CLINICS
Details of the clinics available in the district are given
at the end of this report.
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 chloramlne as a protective measure.
Samples of the raw and treated waters are examined dally 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 197.75
Ammonia 0.10
Ammonia, Albuminoid 0.00
Nitrogen in Nitrates 7.60
Nitrogen in Nitrites 0.00
Oxygen Absorbed 0.08
Chlorine in Chlorides 16.86
Hardness total (grains per gallon) 7.88
Bacteriological Results
No. of Bacteria growing on Agar per ml.
for 3 days at 20° C. 1
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. Five
samples taken at peak periods of attendance gave satisfactory
chemical and bacteriological results.
7