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 Hanover Square, The Vestry of the Parish of Saint George]
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85
As I have before remarked, it is not the average quality
which is of importance, but the inferior water which is
occasionally supplied.
I also analyzed a sample of water from an underground
tank, and one from a butt in a cellar, both supplied by the
Grand Junction Company, but did not consider it necessary
to take any steps beyond having the butt cleansed.
Table VII.
month. | Parts per 100,000. | Parts per 100 Millions. | ||||
---|---|---|---|---|---|---|
Total Solid Residue. | Chlorine= | Common Salt. | Saline. Ammonia. | Organic Ammonia. | ||
Grand Junction Company's Water. | April 1878 | 27 | 1.8 | 3.0 | 4.5 | 10.4 |
May „ | 27 | 1.6 | 2.6 | 3.2 | 13.8 | |
June „ | 30 | 1.6 | 2.6 | 2.7 | 10.0 | |
July „ | 26 | 1.6 | 2.6 | 2.7 | 9.4 | |
August ,, | 34 | 1.8 | 3.0 | 2.7 | 13.0 | |
September „ | 24 | 1.8 | 3.0 | 1.9 | 9.2 | |
October „ | 32 | 1.6 | 2.6 | 2.1 | 14.0 | |
November „ | 39 | 1.6 | 2.6 | 1.0 | 11.6 | |
December „ | 42 | 1.6 | 2.6 | 2.1 | 9.8 | |
January 1879 | 41 | 1.6 | 2.6 | 5.6 | 17.4 | |
February „ | 36 | 1.6 | 2.6 | 2.4 | 13.4 | |
March „ | 37 | 1.6 | 2.6 | 3.2 | 10.4 | |
Average | 33 | 1.6 | 2.6 | 2.8 | 11.9 | |
Chelsea Company's Water. | April 1878 | 26 | 1.6 | 2.6 | 3.5 | 12.4 |
May „ | 26 | 1.6 | 2.6 | 1.6 | 9.6 | |
June ,, | 26 | 1.6 | 2.6 | 5.3 | 12.6 | |
July „ | 21 | 1.6 | 2.6 | 2.7 | 16.6* | |
August „ | 25 | 1.6 | 2.6 | 3.5 | 9.6 | |
September „ | 24 | 1.8 | 3.0 | 1.3 | 8.2 | |
October „ | 26 | 1.7 | 2.8 | 3.2 | 9.0 | |
November „ | 36 | 1.6 | 2.6 | 1.3 | 15.2 | |
December „ | 38 | 1.6 | 2.6 | 2.1 | 12.6 | |
January 1879 | 30 | 1.6 | 2.6 | 2.1 | 13.0 | |
February „ | 35 | 1.6 | 2.6 | 2.7 | 10.4 | |
March „ | 35 | 1.6 | 2.6 | 3.4 | 10.6 | |
Average | 29 | 1.6 | 2.6 | 2.7 | 11.65 |
* A second sample taken later in the month gave Organic Ammonia only 7.4.