Salem Township STP - Secondary Wastewater Treatment in Salem Township, Michigan

Salem Township STP is a municipal wastewater treatment facility located in Salem Township, Washtenaw County, Michigan. The plant serves a small population of 715 residents, providing secondary treatment to meet state and federal water quality standards. The facility has a designed capacity of 378.54 thousand cubic meters and treats an annual discharge volume of 264.98 thousand cubic meters. As a secondary treatment plant, it operates under the U.S. Clean Water Act, which requires such facilities to meet effluent limitations through National Pollutant Discharge Elimination System (NPDES) permits issued by the Michigan Department of Environment, Great Lakes, and Energy (EGLE). The treated effluent from Salem Township STP is discharged into local waterways that drain into the Huron River watershed, ultimately reaching Lake Erie via the Detroit River. The plant plays a key role in protecting the region's water quality and aquatic ecosystems.

The plant discharges into the Huron River watershed, which flows into the Detroit River and then Lake Erie. This region supports diverse aquatic life and is an important migratory corridor for fish. Protecting water quality in this watershed helps maintain the ecological health of the Great Lakes system.