09/01/2026
FOR IMMEDIATE RELEASE:
Please see below for a Public Health Alert Update from the Grand Traverse County Health Department
Public Health Alert Update: Alert issued for section of Boardman/Ottaway River has been lifted.
Issued: September 1, 2026
Issued by: Grand Traverse County Health Department (GTCHD)
The Grand Traverse County Health Department (GTCHD) has lifted the Public Health Alert issued on August 25, 2026, for the Boardman/Ottaway River following additional water sampling conducted in response to last week’s sewage release near South Airport Road.
GTCHD collected two water samples as part of its continued response to the incident. One sample was collected immediately upgradient of the release, and the second was collected immediately downgradient in the area closest to the source of the release.
Because the affected area is known to have large populations of waterfowl, GTCHD expanded its analysis beyond standard bacterial testing. Samples were analyzed for E. coli, as they were during the initial response, and additional microbial source tracking (MST) testing was conducted using droplet digital PCR to evaluate for human-associated HF183 genetic markers.
Results indicate that E. coli levels remain elevated both upgradient and downgradient of the sewage release at levels that would recommend limiting water contact to partial body contact below the waist. However, the MST results did not detect the human-associated HF183 marker, indicating that the elevated E. coli levels are not associated with the recent sewage release.
Because the elevated E. coli levels do not appear to be associated with the sewage release, GTCHD is lifting the Public Health Alert. However, the public is reminded that swimming or engaging in activities where water may be swallowed is not recommended in areas where E. coli levels remain elevated.
A full list of water sampling results is provided below.