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
Lambeth 1972
[Report of the Medical Officer of Health for Lambeth Borough]
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BACTERIOLOGICAL RESULTS - YEARLY AVERAGES, 1972 of water supplied to the London Borough of Lambeth
| Source of supply | BEFORE TREATMENT | AFTER TREATMENT | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of samples | Agar plate count per ml. | Coliform count | Escherichia coli count | Number of samples | Agar plate count per ml. | Coliform count | E. coli count | |||||
| 20-24 hours at 37°C. | 3 days at 22°C. | Per cent, samples negative in 100 ml. | Count per 100 ml. | Per cent, samples negative in 100 ml. | Count per 100 ml. | 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. | |||
| River Thames — derived | 8.087 | 42.3 | 41.94 | 10.2 | 56.76 | 4.0 | 3,891 | 10.0 | 99.85 | 99.97 | ||
| Honor Oak | 112 | 3.5 | 34 | 88.39 | 1.0 | 93 75 | 0.2 | 114 | 0.3 | 28 | 100.0 | 100.0 |
| Merton Abbey | 1 | - | - | 100.0 | - | 100.0 | - | 1 | 5.7 | - | 100.0 | 100.0 |