Lisnaskea Wastewater Treatment Plant, County Fermanagh, Northern Ireland

Lisnaskea wastewater treatment plant is located in the town of Lisnaskea, County Fermanagh, Northern Ireland. The plant serves a population of around 6,392, making it a medium-sized facility within the region's wastewater infrastructure. As a UK wastewater treatment plant, Lisnaskea operates under the Urban Waste Water Treatment (England and Wales) Regulations, which transpose the EU Urban Waste Water Treatment Directive. For a population of this scale, secondary treatment is typically required, with additional nutrient removal if discharging into sensitive areas. The plant's treated effluent is discharged into local watercourses that ultimately drain into Lough Erne, a large lake system in County Fermanagh. Lough Erne is an important ecological site supporting diverse aquatic life and is part of the Erne River system that flows to the Atlantic Ocean.

The plant discharges into the Erne River catchment, which flows into Lough Erne, a large freshwater lake in Northern Ireland. Lough Erne supports diverse aquatic habitats and is an important site for fish, birds, and other wildlife. The lake system drains via the River Erne into Donegal Bay on the Atlantic coast, making the plant's treatment performance relevant to both freshwater and marine environments.