Castletroy Waste Water Treatment Plant, Limerick, Ireland - Municipal Wastewater Facility

Castletroy Waste Water Treatment Plant is a municipal facility located in the Castletroy area of Limerick, County Limerick, Ireland. Serving a population of around 28,094, it is classified as a medium-sized agglomeration under EU regulations. The plant is situated in the Munster region, near the River Shannon, and plays a key role in managing wastewater from the local community. As an Irish wastewater treatment plant, Castletroy operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for discharges to freshwater and estuaries from agglomerations of this size. The plant's designed capacity is 1.00 (likely in cubic meters per day or similar units), indicating its scale. The facility is expected to meet the directive's standards for biological treatment and nutrient removal where necessary. The treated effluent from Castletroy is discharged into the River Shannon, Ireland's longest river, which flows through Limerick city and into the Shannon Estuary before reaching the Atlantic Ocean. The river supports diverse aquatic life and is an important ecological corridor. The plant's operations contribute to protecting water quality in the Shannon catchment and downstream coastal environment.

Castletroy Waste Water Treatment Plant discharges into the River Shannon, which flows through Limerick and into the Shannon Estuary, a large tidal estuary that empties into the Atlantic Ocean. The estuary is ecologically sensitive, supporting diverse fish populations, including salmon and trout, and serves as a migratory corridor for birds. The plant's treatment helps maintain water quality in this important watershed.