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

Hammersmith 1970

[Report of the Medical Officer of Health for Hammersmith Borough]

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Table: METROPOLITAN WATER BOARD - WATER EXAMINATION DEPARTMENTBACTERIOLOGICAL RESULTS - YEARLY AVERAGES, 1970 OF THE WATER SUPPLIED TO THE LONDON BOROUGH OF HAMMERSMITH

METROPOLITAN WATER BOARD - WATER EXAMINATION DEPARTMENTBACTERIOLOGICAL RESULTS - YEARLY AVERAGES, 1970 OF THE WATER SUPPLIED TO THE LONDON BOROUGH OF HAMMERSMITH

Source of SupplyBEFORE TREATMENTAFTER TREATMENT
Number of samplesAgar plate count per ml.Coliform countEscherichia coli countNumber of samplesAgar plate count per ml.Coliform countE. 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 - Derived8,25931.9-37.9117.353.584.73,7108.099.9299.97