SMITHTON BORO STP - Advanced Wastewater Treatment in South Huntingdon Township, Pennsylvania

SMITHTON BORO STP is an advanced wastewater treatment facility located in South Huntingdon Township, Westmoreland County, Pennsylvania. The plant serves a population of approximately 1,632 residents, providing essential wastewater treatment for this rural community in the Appalachian region. The plant employs advanced treatment processes, which go beyond secondary treatment to remove additional pollutants such as nutrients. With a designed capacity of 757.08 cubic meters per day and a current discharge volume of 378.54 cubic meters per day, the facility operates at about half its capacity. As a US plant, it is regulated under the Clean Water Act and operates under an NPDES permit issued by the Pennsylvania Department of Environmental Protection, ensuring compliance with water quality standards. The treated effluent is discharged into local streams that flow into the Monongahela River, a major tributary of the Ohio River system. This river network ultimately drains into the Mississippi River and the Gulf of Mexico. The plant's advanced treatment helps protect downstream aquatic ecosystems and supports the ecological health of the Monongahela River watershed.

The plant discharges into small streams within the Monongahela River basin, which flows into the Ohio River and then the Mississippi River, eventually reaching the Gulf of Mexico. The local watershed supports diverse aquatic life and is an important corridor for migratory fish species. Advanced treatment at this plant helps reduce nutrient loading, which is critical for preventing eutrophication in downstream water bodies.