Overview
Port Dalhousie Wastewater Treatment Plant serves St. Catharines, Ontario, Canada, treating wastewater for over 71,000 residents. It is located on Lake Ontario and operates under Canadian provincial regulations.
Port Dalhousie Wastewater Treatment Plant is a municipal facility located in the Port Dalhousie neighborhood of St. Catharines, Ontario, Canada. It serves a population of approximately 71,248 people within the Niagara Region, part of the Golden Horseshoe area. The plant is situated on the shores of Lake Ontario, one of the Great Lakes. As a Canadian wastewater treatment plant serving a medium-to-large agglomeration, it operates under Ontario's regulatory framework, which includes the Ontario Water Resources Act and the Environmental Protection Act. These regulations require secondary treatment as a minimum for plants of this scale, with additional nutrient removal standards for discharges into the Great Lakes basin to address eutrophication concerns. The plant discharges treated effluent into Lake Ontario, which flows through the St. Lawrence River to the Atlantic Ocean. Lake Ontario is a critical freshwater resource supporting diverse aquatic life, including fish species such as lake trout and salmon, and provides drinking water for millions. The plant's operation is vital for protecting water quality in the lake and downstream ecosystems.
Environmental context
The plant discharges into Lake Ontario, part of the Great Lakes system, which drains via the St. Lawrence River to the Atlantic Ocean. Lake Ontario supports a diverse aquatic ecosystem, including coldwater fish species and migratory birds. The lake is sensitive to nutrient pollution, which can cause algal blooms, making effective wastewater treatment essential for maintaining water quality and ecological health.
Frequently asked questions
The plant is located at 40 Lighthouse Road in the Port Dalhousie neighborhood of St. Catharines, Ontario, Canada, on the southern shore of Lake Ontario.
The plant serves approximately 71,248 residents in the St. Catharines area and surrounding parts of the Niagara Region.
The plant discharges treated effluent into Lake Ontario, which is part of the Great Lakes system. The discharge is regulated under Ontario's environmental laws to protect water quality.
The plant operates under Ontario's Water Resources Act and Environmental Protection Act, which require secondary treatment and nutrient removal for discharges into the Great Lakes to prevent eutrophication.
In Canada, plants serving populations over 50,000 typically employ secondary treatment with nutrient removal, especially when discharging into sensitive water bodies like the Great Lakes, to meet federal and provincial standards.
Nearby plants