Greater Greensburg STP - Hempfield Township, Pennsylvania Wastewater Treatment Plant

Greater Greensburg STP is a municipal wastewater treatment facility located in Hempfield Township, Westmoreland County, Pennsylvania, serving a population of about 27,080. The plant is part of the region's infrastructure managed under the U.S. Clean Water Act, which requires NPDES permits for all discharges. As a medium-sized agglomeration, the plant is expected to provide at least secondary treatment under federal regulations. Typical plants of this scale employ activated sludge or similar biological processes to meet effluent limits. The treated effluent is discharged to a receiving water body that ultimately flows into the Monongahela River, a major tributary of the Ohio River. This watershed supports diverse aquatic life and provides drinking water for downstream communities. The plant's operation is critical for protecting water quality in the region.

The plant discharges to a local stream that drains into the Monongahela River, which flows into the Ohio River and eventually the Mississippi River. The watershed supports diverse aquatic species and is used for recreation and drinking water. Protecting this water body from nutrient pollution and pathogens is essential for downstream ecosystems and human health.