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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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 1881 | 30 | 16 | 2.6 | 32 | 12.6 |
May | 32 | 1.4 | 2.2 | 4.3 | 4.6 | |
June „ | 31 | 1.5 | 2.5 | 2.0 | 8.0 | |
July | 27 | 1.8 | 3.0 | 6.4 | 13.8 | |
August | 28 | 1.6 | 2 6 | 1.6 | 11.8 | |
September „ | 36 | 1.6 | 2.6 | 0.5 | 8.2 | |
October „ | 28 | 1.6 | 2.6 | 2.2 | 7.8 | |
November „ | 30 | 1.6 | 2.6 | 1.1 | 12.8 | |
December „ | 32 | 1.6 | 2.6 | 1.6 | 9.6 | |
January 1882 | 33 | 1.6 | 2.6 | 2.1 | 10.8 | |
February „ | 41 | 1.6 | 2.6 | 0.8 | 10.8 | |
March „ | 30 | 1.6 | 2.6 | 2.8 | 11.2 | |
Average | 31.5 | 1.6 | 2.6 | 2.4 | 10.2 | |
Chelsea Company's Water. | April 1881 | 22 | 1.6 | 2.6 | 2.6 | 9.2 |
May „ | 30 | 1.6 | 2.5 | 3.2 | 10.6 | |
June „ | 28 | 1.5 | 2.5 | 1.2 | 7.6 | |
July „ | 24 | 1.6 | 2.6 | 0.8 | 8.2 | |
August „ | 25 | 1.6 | 2.6 | 3.5 | 7.2 | |
September „ | 36 | 1.6 | 2.6 | 1.8 | 8.8 | |
October „ | 27 | 1.6 | 2.6 | 3.2 | 9.2 | |
November „ | 30 | 1.6 | 2.6 | 3.2 | 11.8 | |
December „ | 33 | 1.6 | 2.6 | 2.1 | 10.8 | |
January 1882 | 32 | 1.6 | 2.6 | 2.1 | 11.6 | |
February „ | 37 | 1.6 | 2.6 | 1.1 | 10.0 | |
March „ | 33 | 1.6 | 2.6 | 0.8 | 9.4 | |
Average | 29.75 | 1.6 | 2.6 | 21 | 9.6 |
Table V1I. shows the results of my analyses of the water
supplied by the two Companies in the Parish during each
of the twelve months. In both cases the average quality
was decidedly superior to that of the preceding year, and the
improvement in the winter months was very marked.
During the hot weather in July, the Grand Junction