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 Islington, Parish of St Mary]
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TABLE B.
Results of a Special Analysis of the Water supplied by the Metropolitan Water Companies during November, as made and published by the Metropolitan Association of Medical Officers of Health.
| Total solid matter per Imperial gallon. | Loss by Ignition. | Oxydisable Organic Matter. | Hardness. | ||||
|---|---|---|---|---|---|---|---|
| Before Boiling. | After Boiling. | ||||||
| Thames Water Companies. | grains. | grains. | grains. | degrees. | degrees. | ||
| Grand Junction | 20.37 | 0.90 | 0.69 | 13.9 | 3.0 | ||
| West Middlesex | 19.00 | 0.75 | 0.91 | 13.7 | 3.0 | ||
| Soutliwark and Vauxhall | 20.25 | 0.80 | 1.03 | 14.0 | 3.0 | ||
| Chelsea | 20.75 | 0.75 | 0.73 | 14.1 | 3.2 | ||
| Lambeth | 18.88 | 1.00 | 1.06 | 13.7 | 3.0 | ||
| Other Companies. | |||||||
| Kent | 25.50 | 0.70 | 0.27 | 18.0 | 5.9 | ||
| New River | 20.18 | 0.65 | 0.79 | 14.0 | 3.1 | ||
| East London | 22.67 | 1.00 | 1.10 | 14.9 | 4.0 | ||
EDWARD BALLARD, M.D.,
Medical Officer of Health.
Vestry Offices,
December 4th. 1865.