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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METROPOLITAN WATER BOARD—WATER EXAMINATION DEPARTMENT BACTERIOLOGICAL RESULTS—YEARLY AVERAGES 1963
I am grateful to Dr. E. Windle Taylor, Director of Water Examination for the following tables:—
Source of Supply | BEFORE TREATMENT | ||||||
---|---|---|---|---|---|---|---|
Number of Samples | Agar plate count per ml. | Coliform count | Escherichia coli count | ||||
20-24 hours at 37°C. | 3 days at 22°C. | Per cent Samples negatives in 100 ml. | Count per 100 ml. | Per cent Samples negative in 100 ml. | Count per 100 ml. | ||
Thames-derived South of River | - | - | - | - | - | - | - |
Shortlands No. 1 well | 44 | 00 | 13 | 1000 | -_ | 1000 | -_ |
Shortlands No. 2 well | 79 | 00 | 1 | 1000 | _- | 100.0 | -_ |
Shortlands No. 3 well | 241 | 01 | 3 | 1000 | _ | 1000 | _ |
West Wickham well | 235 | 01 | 16 | 9715 | - | 99-57 | -_ |
Orpington well | 232 | 00 | 14 | 98-71 | - | 100-0 | - |
METROPOLITAN WATER BOARD—WATER EXAMINATION DEPARTMENT BACTERIOLOGICAL RESULTS—YEARLY AVERAGES 1963
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 | Escherichia 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 | 1,873 | 12.5 | - | 99.41 | 99.47 |
Shortlands No. 1 well | - | - | - | - | - |
Shortlands No. 2 well | 253 | 0.7 | _ | 99.21 | 99.21 |
Shortlands No. 3 well | _ | _ | _ | _ | - |
West Wickham well | 239 | 0.0 | 14 | 100.0 | 100.0 |
Orpington well | 237 | 1.7 | 97 | 99.58 | j 99.58 |