Typhoid is caused by bacteria associated with human waste. In the fall of 1893, Crookston had several dozen cases of typhoid, and as a precaution, authorities on this date flushed the city’s backed-up sewer main into the Red Lake River. Bad idea.
Practically every downstream neighbor was affected, from farmhouses to small towns. Grand Forks, which had about 8,000 residents, was hit the hardest, with a typhoid outbreak about a month after the Crookston flush. Grand Forks drew its drinking water from where the Red Lake River met the Red River.