RAVENNA STP - Kent County, Michigan Wastewater Treatment Plant

RAVENNA STP is a municipal wastewater treatment plant located in Plainfield Charter Township, Kent County, Michigan. The facility serves a population of 1,217 and is part of the regional wastewater infrastructure for the Grand Rapids metropolitan area. The plant provides secondary treatment, which is the standard level required by the US Clean Water Act for most municipal facilities. Its designed capacity is 302.83 million gallons per year, matching the reported discharge volume, indicating full utilization. As a small-scale plant, it operates under a National Pollutant Discharge Elimination System (NPDES) permit issued by the Michigan Department of Environment, Great Lakes, and Energy (EGLE). The treated effluent is discharged into a local water body that ultimately drains into the Grand River and then to Lake Michigan. This watershed supports diverse aquatic life and is an important resource for recreation and drinking water. The plant's performance is critical to maintaining water quality in the Grand River basin.

The plant discharges into a tributary of the Grand River, which flows westward through Michigan and empties into Lake Michigan. The Grand River watershed supports a variety of fish species, including salmon and trout, and is used for recreation and municipal water supply. Protecting this watershed from nutrient pollution and pathogens is essential for the health of Lake Michigan's nearshore ecosystem.