Pollution of The Canals
Chicago’s sewage treatment system discharges only lightly treated fecal matter into the canals. Because of concerns of the effects of chlorine, Chicago has a rare distinction among major American cities: It does not employ a disinfection stage at its three main sewage treatment plants. The result is canal water with fecal coliform colonies, so that signs along the canals warn that the contents are not suitable for ‘any human body contact.
Read more about this topic: Chicago Sanitary And Ship Canal
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