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
Beckenham 1961
[Report of the Medical Officer of Health for Beckenham]
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METROPOLITAN WATER BOARD-WATER EXAMINATION DEPARTMENT
BACTERIOLOGICAL RESULTS—YEARLY AVERAGES 1961
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 Southern Group | — | — | — | — | — | — | — |
| Shortlands No. 1 | 74 | 1.0 | 3 | 100.0 | — | 100.0 | — |
| Shortlands No. 2 | 108 | 0.1 | 7 | 100.0 | — | 100.0 | — |
| Shortlands No. 3 | 223 | 0.1 | 9 | 100.0 | — | 100.0 | — |
| West Wickham | 211 | 0.1 | 16 | 96.21 | 0.1 | 99.53 | — |
| Orpington | 250 | 0.2 | 14 | 94.00 | 0.1 | 100.0 | — |
| 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 Southern Group | 1,835 | 100 | — | 99.84 | 99.89 | ||
| Shortlands No. 1 | — | — | — | — | — | ||
| Shortlands No. 2 | 255 | — | 2 | 100.0 | 100.0 | ||
| Shortlands No. 3 | — | — | — | — | — | ||
| West Wickham | 217 | — | 52 | 100.0 | 100.0 | ||
| Orpington | 255 | 1.8 | 22 | 99.6 | 99.6 | ||