MEMPHIS STP Wastewater Treatment Plant, Memphis, Michigan

MEMPHIS STP is a municipal wastewater treatment facility located in Memphis, a small village in St. Clair County, Michigan, United States. The plant serves a population of approximately 1,113 residents and operates under secondary treatment standards, which is the minimum required by the U.S. Clean Water Act for municipal wastewater treatment. As a secondary treatment plant, MEMPHIS STP uses biological processes to remove organic matter and suspended solids from wastewater. The plant has a designed capacity of 567.81 units and currently discharges a similar volume, indicating it operates near full capacity. The facility is regulated under the National Pollutant Discharge Elimination System (NPDES) permit program, administered by the Michigan Department of Environment, Great Lakes, and Energy (EGLE). The treated effluent from MEMPHIS STP is discharged into a local waterway that ultimately drains into Lake Huron, one of the five Great Lakes. Lake Huron supports a diverse aquatic ecosystem and provides drinking water for millions of people. The plant's location within 50 km of the coast underscores the importance of effective wastewater treatment to protect the sensitive Great Lakes environment.

The treated effluent from MEMPHIS STP flows into a tributary of the St. Clair River, which connects Lake Huron to Lake St. Clair and the Detroit River, eventually reaching Lake Erie. This watershed is part of the Great Lakes Basin, a globally significant freshwater ecosystem. The area supports diverse aquatic life, including fish species such as lake trout and whitefish, and provides habitat for migratory birds. Protecting water quality in this region is critical for maintaining the ecological health of the Great Lakes.