Positioned between Lansing and Saginaw in central Michigan, Corunna was a small town with big problems. For more than 30 years, its sewer system was burdened by stormwater, infiltration and illicit connections. By 2003, something had to give.Flows exceeding 110 percent of contract capacity at the Owosso Mid-Shiawassee County Wastewater Treatment Plant had contributed to peak flows of 15 times the daily average. During wet-weather events, more than half this flow came from inflow and infiltration. Sanitary sewer overflows and residential backups occurred.As one of four municipalities contributing just over 9 percent of the plant’s flows, Corunna was placed under
