Mahoning Twp STP - North East, Pennsylvania Wastewater Treatment Plant

Mahoning Twp STP (Sewage Treatment Plant) is a municipal wastewater facility located in North East, Erie County, Pennsylvania. The plant serves a small population of 1,483 residents and operates under the regulatory framework of the US Clean Water Act, which requires secondary treatment for municipal discharges to surface waters. The plant provides secondary treatment, a standard biological process that removes biodegradable organic matter and suspended solids. Its design capacity is 624.59 volume units, and the current discharge volume matches this figure, indicating full utilization. As a facility in the Great Lakes basin, it must meet stringent effluent limits to protect the sensitive freshwater ecosystem. The treated effluent ultimately reaches Lake Erie, one of the five Great Lakes, which supports diverse aquatic life and provides drinking water for millions. The plant's proximity to the lake (within 10 km) underscores the importance of its treatment performance in preventing nutrient pollution and harmful algal blooms in this vital water body.

Mahoning Twp STP discharges into the Lake Erie watershed, part of the Great Lakes system that drains into the St. Lawrence River and eventually the Atlantic Ocean. Lake Erie is the shallowest and most biologically productive of the Great Lakes, making it susceptible to eutrophication from nutrient inputs. The plant's secondary treatment helps reduce phosphorus and nitrogen loads, which are critical for controlling algal blooms that can harm aquatic life and water quality.