Lancaster WWTP - Secondary Treatment Plant in South Glengarry, Ontario

Lancaster WWTP is a municipal wastewater treatment facility located in South Glengarry, Ontario, Canada. The plant serves a small community of about 1,493 residents and operates under Ontario's regulatory framework for wastewater treatment. The plant provides secondary treatment, which is the standard level required for inland facilities in Canada. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The plant discharges an average of 877 cubic meters of treated wastewater per day. The treated effluent is released into a local watercourse that eventually drains into the St. Lawrence River, a major waterway connecting the Great Lakes to the Atlantic Ocean. The plant plays a key role in protecting downstream water quality and aquatic ecosystems in the St. Lawrence River basin.

The plant discharges into a tributary of the St. Lawrence River, which flows from Lake Ontario to the Gulf of St. Lawrence. The St. Lawrence River supports diverse aquatic life, including fish species such as sturgeon and walleye, and is an important migratory corridor for birds. The plant's secondary treatment helps reduce nutrient and pollutant loads, safeguarding the river's ecological health.