§ Mr. Macquistenasked the Minister of Health whether he is aware that the corrugated iron tanks used in Australia, New Zealand, and Africa for storing water are sent round in motor-lorries in the form of sheets of steel with a hand-wrought corrugating machine and three workmen who corrugate the sheets and then erect tanks with a capacity of from 3,000 gallons to 20,000 gallons, and each dwelling has its own tank or tanks and so waste is avoided; that such tanks are erected at a cost much below the estimates of his Department for similar tanks here; that underground tanks, such as are suggested in the Ministry of Health Memorandum No. 1830, are avoided owing to the risk of contamination; and will he study these methods with a view to their introduction into this country?
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§ Sir K. WoodThe size of tank for adequate rain-water storage must of course depend on the amount and frequency of the rainfall, and I do not think that methods adopted in the Dominions to suit their own climatic conditions would be any guide to the requirements in this country. I am advised that an underground or overground tank of 1,500 gallons capacity for each house constructed in accordance with the Model By-laws would be adequate and free from risk of contamination.