Pinconning STP - Advanced Wastewater Treatment in Pinconning, Michigan

Pinconning STP (Sewage Treatment Plant) is a municipal wastewater facility located in Pinconning, Bay County, Michigan. Serving a population of 1,386, the plant provides advanced treatment to protect local water quality and public health. Its location near the Saginaw Bay coast places it within a sensitive Great Lakes watershed. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 1,892.70 megaliters per year and a discharge volume of 529.96 megaliters per year, the facility operates well within its capacity. As a US plant, it is subject to the Clean Water Act and National Pollutant Discharge Elimination System (NPDES) permits, administered by the Michigan Department of Environment, Great Lakes, and Energy (EGLE). The treated effluent from Pinconning STP ultimately reaches Saginaw Bay, a shallow, nutrient-sensitive embayment of Lake Huron. The bay supports diverse aquatic life, including fish spawning grounds and migratory bird habitats. Advanced treatment helps reduce nutrient loading, mitigating the risk of harmful algal blooms in this ecologically important area.

Pinconning STP discharges into the Saginaw River watershed, which flows into Saginaw Bay, part of Lake Huron in the Great Lakes system. Saginaw Bay is a large, shallow bay that supports important fisheries, including walleye and yellow perch, and provides critical habitat for migratory waterfowl. The bay is susceptible to nutrient pollution, making advanced treatment crucial for maintaining water quality and preventing eutrophication.