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 5. Particulars as to the working of the Septic Tanks.
| No. | Name of town or district. | Name or number of tank. | Dates between which the tank was in use. | Length of time 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 eludge left in the tank. | Per rentage reduction in the amount of sludge effected by septie action. | |
|---|---|---|---|---|---|---|---|---|---|---|
| "Weeks. | Gallons per day. | Gallons. | Tons. | |||||||
| 1899 | ||||||||||
| 26 | Leeds | l | 27 Feb. | ... | 250,000 | 134 | 807 | 82 | 28 | |
| 15 Aug. | ... | 125,000 | million | |||||||
| 21 Sept. | ... | 250,000 | gallons | |||||||
| 1900 | ||||||||||
| 10 Dec. | (End of experiment) | |||||||||
| 1889 | ||||||||||
| 2 | 28 April | ... | 125,000 | ... | 833 | 80 | 18 | |||
| 12 May | ... | 250,000 | ||||||||
| 18 Dec. | ... | 125,000 | ||||||||
| 1900 | (End of experiment) | |||||||||
| Not. | ||||||||||
| 1899 | ||||||||||
| 3 | 3 May | ... | 125,000 | ... | 586 | 82 | 23 | |||
| 12 May | ... | 250,000 | ||||||||
| 18 Dec. | ... | 500,000 | ||||||||
| 1900 | ... | |||||||||
| Nov. | (End of experiment) | |||||||||
| 1889 | ||||||||||
| 4, 5, 6, 7, | 12 June | • •• | 2,000,000 | j (Tanks working in series) | ||||||
| 4 Aug. | ... | |||||||||
| Closed tanks | 6 June | ... | 40,000 | |||||||