Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for Hayes]
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SUMMARY OF REPORTS OF WATER SAMPLES SUBMFrTED FOR BACTERIOLOGICAL
EXAMINATION, 1937.
Report No. and Date | Organisms produced on gelatine plates incubated at 20° C. for 3 days | Organisms produced on agar plates incubated at 37.5° C. for 2 days | B. Colt. | Streptococci | Cl. Welchii. (spores) | Remarks | |
---|---|---|---|---|---|---|---|
Drinking Water | 24502 22/6/37 | 46 per c.c. | 9 per c.c. | Not found in 100 c.c. | Not found in 30 c.c. | Not found in 100 c.c. | There are some coliform bacilli found in quantities from 25 c.c. to 100 c.c. but none of them is of an excremental type. From a bacteriological point of view the water is satisfactory for drinking purposes. |
24503 22/6/37 | 38 per c.c. | 6 per c.c. | Not found in 100 c.c. | Not found in 30 c.c. | Not found in 100 c.c. | Coliform bacilli are present in the higher quantities tested viz.:—50c.c.—100 c.c. but none of them is of a characteristic excremental type. The water may be considered fit for drinking purposes. | |
24504 22/6/37 | 76 per c.c. | 16 per c.c. | Not found in 100 c.c. | Not found in 30 c.c. | Not found in 100 c.c. | The sample contains no organisms of an excremental type and the water may be regarded as satisfactory for drinking purposes. | |
Bathing Water | 35362 30/8/37 | 960 per c.c. | 32 per c.c. | Present in 100 c.c. Not found in less | Present in 10 c.c. | — | The sample contains small numbers of excremental organisms, but not in excess of the number permissible in the standard for bathing waters. The water may therefore be considered suitable for bathing purposes. |