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

London County Council 1900

[Report of the Medical Officer of Health for London County Council]

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Table: Table II.—( continued).

Table II.—( continued).

Date.Solids in suspension.Oxygen absorbed from permanganate in 4 hours at 80° Fah.Nitrous nitrogen.Nitric nitrogen.
By crude liquid. (Total putrescible matter.)Byclearliquid. (Dissolved putrescible matter.)
Table II.—(continued).
Date.Solids in suspension.Oxygen absorbed from permanganate in 4 hours at 80° Fah.Nitrous nitrogen.Nitric nitrogen.
By crude liquid. (Total putrescible matter.)Byclearliquid. (Dissolved putrescible matter.)
Effluent from primary coarse bed B.
1899.
July 4 to 15......3.886Nil1.8470
July 17 to September 18......3.4070.06470.5005
September 21 to December 9...1385.3343.369012940.6125
December 11 to 312025.6103.6670.05200.3180
1900.
January...14.45.25930180.04960.2884
February14.04.7802.6250.07640.3135
March ...10.85.72832480.08580.3424
April13.26.5003.400003760.3264
May1345.64031200.02200.4255
Average for 19001305.59731070.05820.3297
Average for the whole period1395.5223.3030 07690.4289
Effluent from secondary fine bed B.
1899.
July 4 to 15......1.0190.23741.7681
July 17 to September 18...1.2590.03762.3568
September 21 to December 9...3.21.7731.4740.04012.4583
December 11 to 313.62.55221140.05071.6514
1900.
January5.82.2081.6760 05082.1327
February2.61.8301.4190.04292.7167
March0.82.3841.7840.051821371
April2.82.6442.0550073920999
May2.42.2801.540004702.3668
Average for 19003.02.2921.726005402.2430
Average for the whole period3.12.1661.5830.05642.2557
Average percentage purification of the crude sewage during the whole period95.432.174.6......