Lagoon West Wastewater Treatment Plant, Miscouche, Prince Edward Island

Lagoon West is a municipal wastewater treatment facility located in Miscouche, Prince Edward Island, Canada. Serving a small population of 601 residents, the plant plays a key role in managing local wastewater within the rural municipality. Its coastal location places it within 10 kilometers of the ocean, making effective treatment essential for protecting nearby marine environments. The plant provides secondary treatment, a standard biological process that significantly reduces organic matter and suspended solids. Under Canadian federal and provincial regulations, such as the Wastewater Systems Effluent Regulations (WSER), secondary treatment is required for systems serving this population tier. The plant's discharge volume is 270 cubic meters per day, reflecting the scale of the community it serves. Treated effluent from Lagoon West is discharged into the local watershed, which ultimately drains into the Gulf of St. Lawrence. This coastal region supports diverse aquatic life, including fish and shellfish populations. By maintaining secondary treatment standards, the plant helps preserve water quality in the surrounding estuary and coastal zone, which are important for both ecology and local livelihoods.

Lagoon West discharges into a local watercourse that flows into the Gulf of St. Lawrence, a large marine ecosystem supporting fisheries and migratory birds. The coastal waters near Miscouche are part of a sensitive estuarine environment where nutrient and pathogen control is critical. Secondary treatment reduces biological oxygen demand and suspended solids, mitigating impacts on downstream habitats and recreational areas.