Stirling Wastewater Treatment Lagoon - Quinte West, Ontario, Canada

Stirling Wastewater Treatment Lagoon is a municipal facility located in Quinte West, Ontario, Canada, serving a population of approximately 1,748 residents. The plant is situated in the Central Ontario region and operates as part of the province's wastewater infrastructure. The facility provides secondary treatment, which is the standard level required for communities of this size under Canadian provincial regulations. Ontario's wastewater systems are regulated by the Ministry of the Environment, Conservation and Parks, with permits that set effluent quality standards to protect receiving waters. The treated effluent is discharged into the local watershed, which ultimately drains into Lake Ontario via the Trent River system. Lake Ontario is a vital freshwater resource and part of the Great Lakes ecosystem, supporting diverse aquatic life and providing drinking water for millions. The plant's operation helps maintain water quality in this ecologically significant basin.

The plant discharges into the Trent River watershed, which flows into the Bay of Quinte on Lake Ontario. Lake Ontario is the easternmost Great Lake and a critical freshwater resource, supporting diverse fish species and migratory birds. The Bay of Quinte is an ecologically sensitive area known for its wetlands and as a spawning ground for walleye and other fish. Protecting water quality here is essential for the health of the broader Great Lakes ecosystem.