Sewer Plant Upgrade Is Needed, Engineers Say

Mackinac Island’s sewer plant is at the end of its life. Since it was built in the 1970s, the plant has been retrofitted and upgraded over the years, and the time has come for a massive overhaul that uses modern technology. The new plant, which will be able to process 1.5 million gallons of wastewater a day (a 50% increase […]