Ballymoney Glenstall Wastewater Treatment Plant, County Londonderry, Northern Ireland

Ballymoney Glenstall is a wastewater treatment plant located in County Londonderry, Northern Ireland, United Kingdom. It serves a population of approximately 21,219 people, classifying it as a medium-sized agglomeration under EU classification. The plant is situated near the Bann Road area, within the Causeway Coast and Glens District. As a UK facility, the plant operates under the Urban Waste Water Treatment Regulations (transposing the EU Urban Waste Water Treatment Directive 91/271/EEC). For agglomerations of this size, secondary treatment is typically required, with additional nutrient removal if discharging into sensitive areas. The plant's designed capacity is noted as 1.00 (likely in megaliters per day or similar units), indicating a scale appropriate for its population served. The treated effluent from Ballymoney Glenstall ultimately drains into the River Bann system, which flows northward into the Atlantic Ocean via the Bann Estuary near Coleraine. The River Bann supports diverse aquatic life, including salmon and trout populations, and its estuary is an important habitat for migratory birds. The plant's operations are crucial for maintaining water quality in this ecologically significant river system.

Ballymoney Glenstall discharges into the River Bann catchment, which flows through County Londonderry and enters the Atlantic Ocean at the Bann Estuary. The River Bann is a key watercourse supporting salmon and trout fisheries, and its estuary provides habitat for wading birds and waterfowl. The plant's treatment performance directly affects the ecological health of this river system and the downstream coastal environment.