Centerville Lagoon Wastewater Treatment Plant, Reserve Mines, Nova Scotia

Centerville Lagoon is a municipal wastewater treatment facility located on Centerville Road in Reserve Mines, within the Cape Breton Regional Municipality of Nova Scotia, Canada. The plant serves a small population of 245 residents and operates at a secondary treatment level, providing biological treatment to reduce organic pollutants and suspended solids before discharge. The plant's treatment process involves lagoon-based secondary treatment, which is common for small communities in rural Canada. Under the Canadian federal wastewater regulations (Wastewater Systems Effluent Regulations, WSER), secondary treatment is the minimum standard for facilities discharging to freshwater or marine environments. The treated effluent is discharged into the local watershed, which ultimately drains into the Atlantic Ocean via the nearby coastal waters of Cape Breton Island. The receiving environment is ecologically sensitive, supporting diverse marine life and serving as habitat for fish and migratory birds. The plant's proximity to the coast (within 10 km) underscores the importance of effective treatment to protect marine water quality.

Centerville Lagoon discharges treated wastewater into the local watershed near the Atlantic coast of Cape Breton Island. The receiving waters flow into the Gulf of St. Lawrence, a productive marine ecosystem that supports fisheries, seabird colonies, and marine mammals. The coastal environment is ecologically sensitive, with tidal influences and nearshore habitats that require protection from nutrient loading and pathogens.