Leadership

FILTRATION

Issue 12 and Volume 53.

FILTRATION A temporary filtration plant, in which hypochloride of lime is used, has been put in operation at Alpena, Mich. This system was recommended by Secretary R. L. Dixon, of the State board of health, after investigating the high rate of typhoid fever in Alpena. William Van Arnuni, chemist at the Cohoes, N. Y., filter plant, reported that the works was filtering an average of 7,440,000 gallons a day, and it was more than 95 per cent. pure. The unfiltered reservoir is 16 feet down trom highwater mark and the filtered water reservoir is full. A sample of the water furnished the people of Paducah, Ky., by the water company has been analyzed by the State Board of Health and pronounced pure. The report says that the water is free from pathogenia bacteria that are likely to cause sickness. The fine filtering plant installed a few years ago is responsible…

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