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 Beckenham]
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BACTROLOGICAL RESULT-YEARLY AVERAGES 1962
I am grateful to Dr. E, Windle Taylor, Director of Water Examination for the following tables:-
Source of supply | Number of samples | Agar plate count per ml. | ' Coliform count | Kscherichia coli count | |
---|---|---|---|---|---|
20-24 hours at 37°C | 3 days at 22 C, | Per cent samples negative in 100 ml. | Per cent samples negative in 100 ml. | ||
Thames-derived South of River | ¯ | ¯ | ¯ | ||
Shortlands No. 1 well | 0.0 | ||||
Shortlands No. 2 well | 85 | 0.1 | |||
Shortlands No. 3 well | 199 | 0.2 | 3 | ||
West wickham well | 6 | ||||
Orpington well | 242 . | 0.4 | 6 |
BACTROLOGICAL RESULT-YEARLY AVERAGES 1962
I am grateful to Dr. E, Windle Taylor, Director of Water Examination for the following tables:-
Source of Supply | AFTER TREATMENT | ||||
---|---|---|---|---|---|
Number of samples | Agar plate count per ml. | Coliform count | Koscherichia coli count | ||
20-24. hours at 37°C. | 3 daYs at 22 C | Per cent samples negative in 190 ml, | Per cent. samples negative in 100 ml. | ||
Thanes-derived South of River | 1883 | 10.6 | 99.95 | 100.0 | |
Short-lands well | 244 | 0.1 | 2 | 99.59 | 99.59 |
West Wickham well | 242 | 0.0 | 2 | 100.0 | 100.0 |
Orpington well | 245 | 0.2 | 19 | 100.0 | 100.0 |