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
Islington 1866
[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 February, 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 | 20.99 | 0.94 | 0.56 | 13.9 | 4.1 |
| West Middlesex | 20.56 | 1.09 | 0.60 | 13.6 | 3.8 |
| Southwark and Vauxhall | 22.81 | 1.34 | 0.72 | 13.9 | 4.5 |
| Chelsea | 20.51 | 1.28 | 0.64 | 13.9 | 4.0 |
| Lambeth | 21.15 | 1.00 | 0.66 | 14.0 | 4.5 |
| Other Companies. "Kent | 26.38 | 1.45 | 0.19 | 14.0 | 8.5 |
| New River | 21.20 | 1.28 | 0.39 | 15.0 | 4.8 |
| East London | 22.20 | 1.00 | 0.49 | 15.5 | 5.0 |