North Sydney Sydney Mines Florence North Division ND4 Wastewater Treatment Plant, North Sydney, Nova Scotia

North Sydney Sydney Mines Florence North Division ND4 is a municipal wastewater treatment plant serving the community of North Sydney, Nova Scotia, Canada. The plant serves a population of approximately 3,316 and is part of the regional wastewater infrastructure managed by the Cape Breton Regional Municipality. As a Canadian facility, the plant operates under federal and provincial regulations, including the Canadian Environmental Protection Act and Nova Scotia's Environment Act. For small communities like this, secondary treatment is typically required to reduce organic matter and suspended solids before discharge. The plant has a designed capacity of 1.00 million liters per day, indicating it is sized for a small population. The plant's treated effluent is discharged into the waters near North Sydney, which flow into the Atlantic Ocean via the Sydney Harbour. The receiving environment supports diverse marine life and is important for local fisheries and recreation. The plant's proximity to the coast underscores the need for effective treatment to protect coastal water quality.

The plant discharges into the Sydney Harbour estuary, which connects to the Atlantic Ocean. This coastal environment supports a variety of marine species, including fish, crustaceans, and seabirds, and is used for commercial and recreational fishing. The plant's location within 50 km of the coast means that treated effluent must meet stringent quality standards to prevent nutrient enrichment and protect sensitive marine habitats.