Students from Hiroshima University’s Higashi-Hiroshima Campus have been unknowingly drinking toilet water since April, 1993.

It took around 80 students getting ill with diarrhea and vomiting before uncovering a plumbing error that sent water for flushing toilets, instead of quality water, to the drinking fountains in the gymnasium.

University officials have apologized for the mix up.

By Sun Tzu on 15-08-2007