The city has applied a surface application of lime to kill any remaining bacteria. This lime product appears as a white, powdery substance.
Because the sewage reached the Huron River, the City of Arbor took the immediate precaution of closing canoe livery trips in the vicinity, from Argo to Gallup, on Thursday and through Friday. Any body contact is not recommended for at least 24 hours after a known release of raw sewage to waterways.
The City of Ann Arbor has completed testing and will evaluate water quality samples over the next 24 hours for presence of harmful bacteria in the Huron River. The determination whether to resume canoe livery operations between Argo and Geddes Dam will be made at 8 a.m. Saturday, Aug. 31, based upon water sampling results.