TRIMONT STP - Galena Township, Minnesota Wastewater Treatment Plant

TRIMONT STP is a wastewater treatment plant located in Galena Township, Martin County, Minnesota, United States. The plant serves a small community of approximately 746 residents, providing secondary treatment to municipal wastewater. It operates as part of the local infrastructure managed by the township. The plant employs secondary treatment processes, which are standard for small to medium agglomerations in the United States. Under the Clean Water Act, such facilities must meet National Pollutant Discharge Elimination System (NPDES) permit requirements to ensure effluent quality protects receiving waters. The plant's designed capacity is 794.93 million gallons per year, with an actual discharge volume of 458.04 million gallons per year, indicating operational headroom. The treated effluent from TRIMONT STP is discharged into local waterways that ultimately drain into the Mississippi River basin. The plant plays a key role in protecting downstream water quality in the region's rivers and lakes, supporting aquatic life and recreational uses. Its location inland, away from coastal areas, reduces direct marine impact but requires careful management of nutrient loads to prevent eutrophication in freshwater systems.

TRIMONT STP discharges into the local watershed within the Mississippi River basin, which flows south to the Gulf of Mexico. The receiving waters support diverse aquatic ecosystems, including fish and macroinvertebrate communities. Nutrient management is critical in this agricultural region to prevent downstream algal blooms and hypoxia in the Gulf.