INDIANA CO MSA PLUMVILLE STP - South Mahoning Township, Pennsylvania Wastewater Treatment

INDIANA CO MSA PLUMVILLE STP is a municipal wastewater treatment facility located in South Mahoning Township, Indiana County, Pennsylvania. The plant serves a small population of 912 residents and operates under the regulatory framework of the US Clean Water Act, which requires secondary treatment for municipal discharges to protect water quality. The plant provides secondary treatment, a biological process that removes organic matter and suspended solids. With a designed capacity of 227.12 cubic meters per day and a current discharge volume of 189.27 cubic meters per day, the facility operates below its capacity. As a small agglomeration, it is subject to EPA NPDES permitting requirements that ensure compliance with effluent limits. The treated effluent is discharged into local streams within the Allegheny River watershed, which ultimately drains to the Ohio River and then the Mississippi River. The plant plays a role in protecting the water quality of these downstream water bodies, supporting aquatic life and recreational uses in the region.

The plant discharges into tributaries of the Allegheny River, which flows into the Ohio River and then the Mississippi River before reaching the Gulf of Mexico. The local watershed supports diverse aquatic ecosystems, including fish populations and benthic communities. The secondary treatment process helps reduce nutrient and organic loads, mitigating eutrophication risks in downstream waters.