Update Friday, September 23:
Recreation on the Huron River has been resumed and, so far, water tests show no threat to human health, according to an updated press release by the city of Ann Arbor.
It is believed that the leak was caused after a motorist drove through barriers near the entrance to Gallup Park. The investigation of that incident is ongoing.
Raw sewage flowed out of the pipe from Saturday, September 17 to Monday, September 19.
More from the city’s press release: