Chlorination of the U.S. Water Supply Begins

Article abstract: Chlorination began to be used in water treatment plants in the United States to kill the bacteria that had been causing epidemics.

Summary of Event

Before the introduction of chlorine into drinking-water supplies, epidemics of infectious diseases caused by water-borne microorganisms were common. Such epidemics occurred regularly in the United States and the rest of the world, particularly in urban areas.

Mortality rates in the United States rose through the eighteenth and nineteenth centuries, peaking in the 1860’s and...

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