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
Wandsworth 1963
[Report of the Medical Officer of Health for Wandsworth, Metropolitan Borough]
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FOOD AND FOOD PREMISES 37
Bacteriological Examination of Food and Waters
Two hundred and eighty-four samples were examined bacterio-logically at the Public Health Laboratory during the year. They were as follows:
| Milk | Ice-cream | Artesian Well Waters | Swimming Pool Waters | Others | Total |
|---|---|---|---|---|---|
| 180 | 39 | 3 | 59 | 3 | 284 |
Milk
Of the 180 samples of milk, 84 were submitted to the phosphatase
test, 84 to the methylene-blue test, and 12 to the turbidity test.
These samples were reported satisfactory.
Ice-cream
The 39 samples of ice-cream were examined at the Public Health
Laboratory.
The following table gives a summary of the results Methylene-Blue Reduction Test
| Provisional Grade | Number of Samples |
|---|---|
| 1 | 17 |
| 2 | 11 |
| 3 | 3 |
| 4 | 8 |
| Total | 39 |
Examination of Water from Artesian Wells
Three samples were submitted for examination, and were
reported satisfactory.
Examination of Water from Swimming Baths
Fifty-nine samples were submitted for examination. Satisfactory
results were obtained in 57 samples. In the remaining samples
there were slight deviations from normal, but subsequent tests
proved satisfactory in all cases.
Others
The three miscellaneous samples proved to be free of pathogenic
organisms.