Filtration and the Typhoid Death Rate

Issue 10 and Volume 68.

Filtration and the Typhoid Death Rate One of the strongest presentation of the effects of filtration on the death rate by typhoid fever resulting from the drinking of impure water is contained in the leport made by Chemist Charles P. Ploover of the Water Department of Columbus, Ohio. The chart in question is reproduced on page 536. This presents in graphic form the death rate from typhoid in the period from 1904 to 1919. In 1908 the rate was a fraction over 100 per 100,000 population. In September of that year a filtration plant was placed in operation and the record for 1909, with the populace drinking filtered water for the first time, dropped to the small amount of 15 per 10,000. Since that time, with the exception of two years, 1912 and 1913, when there was a slight increase, the rate has gradually been lowered until 1919, when it…

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