Bear Creek Watershed Auth Wastewater Treatment Plant, Petrolia, Pennsylvania

Bear Creek Watershed Auth is a wastewater treatment plant located in Petrolia, Butler County, Pennsylvania. It serves a population of 1,425 and is part of the municipal infrastructure for the local community. The plant provides advanced treatment, which goes beyond secondary treatment to remove additional pollutants such as nutrients. With a designed capacity of 151.42 million gallons per day and a discharge volume matching that capacity, it operates at full capacity. As a US facility, it is subject to the Clean Water Act and must comply with National Pollutant Discharge Elimination System (NPDES) permits issued by the Pennsylvania Department of Environmental Protection. The treated effluent is discharged into a local water body that drains into the Ohio River basin, ultimately reaching the Mississippi River and the Gulf of Mexico. The plant plays a key role in protecting downstream water quality and aquatic ecosystems in the region.

The plant discharges into a tributary of the Ohio River, which flows into the Mississippi River and then to the Gulf of Mexico. The local watershed supports diverse aquatic life and is important for regional biodiversity. Advanced treatment helps reduce nutrient loading, which can cause eutrophication in downstream water bodies.