Abstract
Purification of Swimming Bath Water.—Reports appear from time to time suggesting that disease may be spread by swimming baths, and as the provision and use of swimming baths has increased greatly in recent years, the Ministry of Health has been well advised to institute an inquiry into the subject, the report of which has recently been issued (“The Purification of the Water of Swimming Baths.” London: H.M. Stationery Office. Price 1s. net). When the water is infrequently changed, or is not subjected to purification, pollution must occur, chiefly from the persons of the bathers and from their costumes, and diseases may occasionally be transmitted, but there is no evidence to support the alarmist rumours that appear. Natural purification can be relied upon only when the pooi is of considerable size, and the inflow of fresh water is sufficient. In smaller baths and poois, frequent change of water (“fill-and-empty system”) is usually too costly, and some system of purification becomes necessary. For this purpose, filtration and aeration are useful, but some form of chlorination is to be preferred. Filtration with continuous chlorination is the method advocated, the chlorine being derived from bleaching powder, electrolytic fluids, chlorine gas, or chioramine. All these methods are described and discussed.
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Research Items. Nature 124, 819–821 (1929). https://doi.org/10.1038/124819a0
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DOI: https://doi.org/10.1038/124819a0