Queenston Wastewater Treatment | Niagara-on-the-Lake, Ontario, Canada

Queenston Wastewater Treatment is a municipal facility located in the Queenston community of Niagara-on-the-Lake, Ontario, Canada. It serves a small population of 563 residents within the Niagara Region, part of the Golden Horseshoe area. The plant is classified as a small-scale agglomeration under Canadian wastewater management frameworks. The plant provides secondary treatment, a standard level for communities of this size in Ontario. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The facility discharges an average of 253 cubic meters of treated wastewater per day. As a small plant, it operates under provincial regulations administered by the Ontario Ministry of the Environment, Conservation and Parks, which sets effluent quality standards to protect receiving waters. The treated effluent from Queenston Wastewater Treatment ultimately flows into the Niagara River, which connects Lake Erie to Lake Ontario. The Niagara River is a major waterway supporting diverse aquatic life and is a critical component of the Great Lakes ecosystem. The plant's discharge contributes to the overall water quality management in the region, helping to protect downstream environments including the Niagara Gorge and Lake Ontario.

The plant discharges into the Niagara River, which flows from Lake Erie to Lake Ontario. This river system supports a variety of fish species and is an important migratory corridor for aquatic life. The downstream environment includes the ecologically sensitive Niagara Gorge and the vast Lake Ontario ecosystem, which provides habitat for numerous species and serves as a drinking water source for millions. The plant's secondary treatment helps reduce nutrient and pollutant loads, contributing to the health of the Great Lakes basin.