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
Paddington 1887
[Report of the Medical Officer of Health for Paddington]
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136
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
1887
690
473