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The city of Cincinnati was one of the first of the large cities in this country to install complete water-purification works. Lime and sulphate of iron are used as coagulants. The construction of the plant was undertaken only after careful investigation into the local conditions, and the work throughout has been supervised by some of the leading American sanitary experts. The present report gives an admirable history of the enterprise, including a summary of the experiments on filtration which were discussed in full in a previous publication. A section on the operation of the plant for the year 1908 is given, in which we learn that over 50 per cent. of tests made with 100 c.c. of filtered water were negative for Bacillus coli. The cost of filtration is stated at $4.40 per million gallons. The report is beautifully illustrated with photographs and line drawings.
Report of the Board of Trustees "Commissioners of Waterworks" of Cincinnati, Ohio. JAMA. 1909;LIII(17):1427. doi:10.1001/jama.1909.02550170083024
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