Fredonia V WWTP - City of Dunkirk, New York Wastewater Treatment Plant

Fredonia V WWTP is a municipal wastewater treatment facility serving the City of Dunkirk in Chautauqua County, New York. The plant treats wastewater from a population of approximately 16,952 residents, placing it in the medium agglomeration category under US regulatory frameworks. As a US facility, the plant operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting, typically administered by the New York State Department of Environmental Conservation. For plants of this scale, secondary treatment is the minimum standard, with potential additional requirements for nutrient removal if discharging to sensitive waters. The plant's treated effluent ultimately reaches Lake Erie, part of the Great Lakes system, which is a critical freshwater resource supporting drinking water, recreation, and diverse aquatic life. The facility plays a key role in protecting Lake Erie's water quality from nutrient pollution and pathogens.

The plant discharges into the Lake Erie watershed, which drains into the Niagara River and eventually the Atlantic Ocean via the St. Lawrence Seaway. Lake Erie is the shallowest of the Great Lakes and is particularly sensitive to nutrient loading, which can cause harmful algal blooms. The plant's treatment performance is important for maintaining the lake's ecological health and supporting downstream fisheries and water quality.