Overview
Portlaoise Waste Water Treatment Plant serves County Laois, Ireland, treating wastewater for approximately 32,474 people. The plant operates under Ireland's implementation of the EU Urban Waste Water Treatment Directive.
Portlaoise Waste Water Treatment Plant is a municipal facility located on Ridge Road in Portlaoise, County Laois, Ireland. It serves a population of approximately 32,474 people in the region, classifying it as a medium-sized agglomeration under EU standards. As an Irish wastewater treatment plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas. The plant's treated effluent is discharged into local watercourses that ultimately drain into the River Barrow and then into the Celtic Sea. The Barrow catchment supports diverse aquatic life and is an important ecological corridor in southeastern Ireland.
Environmental context
The plant discharges into the River Barrow catchment, which flows into the Celtic Sea via Waterford Harbour. The Barrow is part of the Barrow-Nore-Suir river system, one of Ireland's most important freshwater ecosystems, supporting salmon, lamprey, and otter populations. The downstream estuary is ecologically sensitive due to its role as a nursery for marine fish and a stopover for migratory birds.
Frequently asked questions
The plant is located on Ridge Road in Portlaoise, County Laois, Ireland.
The plant serves approximately 32,474 people in the Portlaoise area and surrounding County Laois.
The treated effluent is discharged into local watercourses that flow into the River Barrow catchment, ultimately reaching the Celtic Sea.
As an Irish plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations over 2,000 population equivalent.
Under the EU Urban Waste Water Treatment Directive, plants serving between 10,000 and 150,000 people typically require secondary treatment, with tertiary treatment if discharging into sensitive areas.