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 London County Council]
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No. | Name of town or district. | Name or number of tank. | Dates between which the tank was in use. | Length of tunc during which the tank was used. | Rate of flow of sewage through the tank. | Quantity of sewage passed into the tank. | Quantity of sludge left in the tank. | Percentage of moisture in the sludge left in the tank. | Percentage reduction in the amount of sludge effected by septic action. |
---|---|---|---|---|---|---|---|---|---|
Weeks. | Gallons per day. | Gallons. | Tons. | ||||||
30 | Manchester | 16 Feb., '99 to 26 April, '00 | ... | 4,200,000 | ... | 4,000 | 85 | 75 | |
16 May, '00 to 14 Nov., '00 | ... | 2,500,000 | 425,000,000 | ... | • • • | 21.6 | |||
14 Nov., '00 to 24 Jan., '01 | ... | 2,000,000 | 142,000,000 | ... | ... | 33.5 | |||
50.0 |