GROSSE ISLE TOWNSHIP WWTP - Grosse Ile Township, Michigan Wastewater Treatment Plant

GROSSE ISLE TOWNSHIP WWTP is a municipal wastewater treatment facility located in Grosse Ile Township, Wayne County, Michigan. Serving a population of approximately 10,894, the plant is situated on an island in the Detroit River, which connects Lake St. Clair to Lake Erie. As a facility in the United States, it operates under the Clean Water Act, with National Pollutant Discharge Elimination System (NPDES) permits issued by the Michigan Department of Environment, Great Lakes, and Energy (EGLE). The plant's designed capacity is 1.00 million gallons per day, indicating it is sized for a small to medium community. Typical facilities of this scale in Michigan employ secondary treatment, often including activated sludge or lagoon systems, to meet state and federal effluent limits. The regulatory framework under the Clean Water Act requires such plants to achieve secondary treatment standards, which remove at least 85% of biochemical oxygen demand and total suspended solids. The plant's discharge must comply with water quality standards for the Detroit River, which is a major international waterway. The treated effluent from GROSSE ISLE TOWNSHIP WWTP enters the Detroit River, which flows south into Lake Erie. The Detroit River is a critical migratory corridor for fish and supports diverse aquatic life, including lake sturgeon and walleye. The river's health is vital for the Great Lakes ecosystem, and the plant's discharge must be carefully managed to prevent nutrient enrichment and protect downstream water quality.

The plant discharges into the Detroit River, a connecting channel between Lake St. Clair and Lake Erie. This river is part of the Great Lakes Basin, one of the largest freshwater systems in the world. The Detroit River supports a diverse aquatic ecosystem, including fish species such as lake sturgeon, walleye, and smallmouth bass. The river also serves as a major migratory route for birds and fish. Protecting water quality in this system is critical for maintaining the ecological health of the Great Lakes.