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]
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 sludge left in the tank.||Percentage reduction in the amount of sludge effected by septic action.|
|Weeks.||Gallons per day.||Gallons.||Tons.|
|19||Glasgow...||1||15 Sept., 1900, and 2 May, 1901||33||...||44,526,128||818.5||92||54.25|
|20||Haslingden, Rawten-stall and Bacup||...||Dec., 1899 to Dec., 1901.||104||456,250||47,000,000||Average depth of 3 feet in tank)||90|