London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
Sutton and Cheam 1943
[Report of the Medical Officer of Health for Sutton and Cheam]
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SANITARY CIRCUMSTANCES OP 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 9 degrees of hardness.
Chlorine is applied in the form of chloramine as a
protective measure. Samples are examined daily by the
Company's chemist and bacteriologist in 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, and below is the average of monthly analyses.
| Average | |
|---|---|
| Total solid residue dried at 180‹ C. | 19.00 |
| Ammonia, free | 0.0101 |
| Ammonia, Albuminoid | 0.0001 |
| Nitrogen as Nitrates | 0.87 |
| . . Nitrogen as Nitrites | 0 |
| Oxygen absorbed in 4 hours at 27‹ c. | 0.004 |
| Chlorine (in chlorides) | 1.883 |
| Hardness total (soap test) | 8.28 |
| No. of Bacteria growing on Agar per c.c. for 3 days at 2 0‹ C. | 2.3 |
| No. of Bacteria growing on Agar per c.c. for 1 day at 37‹ C. | ¡ 0.08 |
| Presence of Bacillus coli in 100 c.c. | 0 |
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