UNION CITY BORO STP Wastewater Treatment Plant, Union Township, Pennsylvania

UNION CITY BORO STP is a municipal wastewater treatment plant located in Union Township, Erie County, Pennsylvania. It serves a population of approximately 3,022 residents, classifying it as a small-scale facility within the region's wastewater infrastructure. As a US-based plant, it operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting, typically administered by the Pennsylvania Department of Environmental Protection. Plants of this size commonly employ secondary treatment to meet effluent standards. The plant's treated effluent discharges into local waterways that drain into the Lake Erie watershed, ultimately reaching Lake Erie. This places the facility within a sensitive Great Lakes ecosystem, where nutrient management and water quality protection are critical for maintaining aquatic health and drinking water supplies.

The plant discharges into tributaries of the Lake Erie basin, part of the Great Lakes system. Lake Erie supports diverse aquatic life, including important fish species, and provides drinking water for millions. The watershed faces challenges from nutrient pollution, making effective wastewater treatment essential for preventing algal blooms and protecting downstream ecosystems.