SLIGO BORO AUTH STP - Sligo, Pennsylvania Wastewater Treatment Plant

SLIGO BORO AUTH STP is a municipal wastewater treatment plant located in Sligo, Clarion County, Pennsylvania, United States. The facility serves a small population of 771 residents, providing secondary treatment to meet Clean Water Act standards. The plant operates under the US EPA National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits for discharges to surface waters. With a designed capacity of 416.39 units and a discharge volume of 416.40 units, the plant operates near its capacity, typical for small communities. The treated effluent is discharged into a local waterway that drains into the Allegheny River watershed, ultimately reaching the Ohio River and Mississippi River system. This inland location supports regional aquatic ecosystems and downstream water quality.

The plant discharges into a tributary of the Allegheny River, which flows into the Ohio River and then the Mississippi River to the Gulf of Mexico. The local watershed supports diverse freshwater species and provides habitat for migratory fish. As a small inland plant, its discharge is diluted by river flows but still requires careful management to protect downstream water quality.