Chicago is a city formed situated on the Great Plains and the Great Lakes in the Midwestern region of the United States. In 1885, typhoid broke out, killing about 90,000 people. It was a disaster caused by the water of Lake Michigan, where the sewage and garbage of one million people were dumped. This was the event with the most deaths among the environmental disasters recorded so far. The Chicago typhoid outbreak served as a starting point for the realization that the government needs to manage the quality of rivers and lakes to ensure safe and clean drinking water supply for citizens.