The Three Rivers Wastewater Treatment Plant later this week will be dye-testing portions of its Wastewater Treatment Plant with a non-toxic tracer dye.
The plan is to be in effect Wednesday.
The tracer dye to be used in the process has been approved by the Michigan Department of Environmental, Great Lakes and Energy. The dye is safe for human health and the environment.
Plant officials said the dye will pass through the wastewater treatment facility and eventually discharge into the St. Joseph River. It may be noticeable as a bright fluorescent yellow/green color for up to seven days afterward.
Questions can be directed to the wastewater treatment plant by phoning 273-5885.