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 Paddington]
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TABLE A.
Taking the mean proportion of organic impurity in the Thames water delivered in London in 1868 as 1,000, in the subsequent years the following proportions were present respectively in the Thames water and in the Lea water, the latter being delivered by the New River and East London Companies:—
Year. | Proportion of organic impurity present in Thames water as delivered in London. | Proportion of organic impurity present in Lea water as delivered in London. |
---|---|---|
1868 | 1,000 | 484 |
1869 | 1,016 | 618 |
1870 | 795 | 550 |
1871 | 928 | 604 |
1872 | 1,243 | 819 |
1873 | 917 | 693 |
1874 | 933 | 583 |
1875 | 1,030 | 751 |
1876 | 903 | 562 |
1877 | 907 | 596 |
1878 | 1,056 | 747 |
1879 | 1,165 | 947 |
1880 | 1,254 | 1,013 |
1881 | 993 | 765 |
1882 | 1,033 | 711 |
1883 | 850 | 620 |
1884 | 723 | 500 |
1885 | 839 | 603 |
1886 | 756 | 500 |