Lagoon Wastewater Treatment Plant, Tignish, Prince Edward Island

The Lagoon wastewater treatment plant is located in Tignish, Prince Edward Island, Canada, serving a small community of 737 residents. The plant is situated near the coast on Chiasson Road, within the Town of Tignish, and is currently operational. The plant provides secondary treatment, which is the standard biological treatment process for municipal wastewater. Under Canadian federal and provincial regulations, secondary treatment is typically required for communities of this size to reduce organic matter and suspended solids before discharge. The plant treats an average daily flow of 331 cubic meters. The treated effluent is discharged into the local environment, likely into a nearby watercourse or directly into the Gulf of St. Lawrence, given the plant's proximity to the coast. The receiving waters support diverse aquatic life and are part of the broader marine ecosystem of the Gulf, which is important for fisheries and coastal ecology.

The plant discharges treated wastewater into the coastal waters of the Gulf of St. Lawrence, a large marine ecosystem that supports commercial fisheries, migratory birds, and diverse marine species. The local watershed includes small streams and wetlands that drain into the Gulf, providing critical habitat for fish and wildlife. The area's coastal environment is sensitive to nutrient loading, which can lead to algal blooms and impact water quality.