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Work commences on Castletroy Wastewater treatment plant upgrade

21 July 2025

Information below is relevant until further updates are provided here or on our Supply and Service Updates section

Uisce Éireann celebrates the news of a multimillion-euro investment in the ever-growing town of Castletroy in Co Limerick as work begins on upgrading the local wastewater treatment plant (WWTP). 

 

This investment marks a significant step forward and holds great promise for population growth while unlocking new opportunities for future economic development in the area.  

This project will bring several benefits straight to the local community and its surroundings, alongside enabling growth for the area. This project will improve the health and integrity of the environment, protect the water quality in the Lower Shannon, and conservation habitats. This project will also protect recreational waters for fishing and boating activities and ensure compliance with Irish and EU legislation. 

 

Programme Manager, Angus Hall, celebrates this news, saying: “Enabling Ireland’s growth and development is one of Uisce Éireann’s key priorities, so delivering this vital infrastructure project is great news.  By increasing the capacity of the wastewater treatment plant by 70%, we are ensuring that the town of Castletroy, adjacent to Limerick City, can continue to thrive and expand sustainably and we are proud to grow alongside it.” 

 

This project will involve the construction of a new stormwater storage tank, installation of new primary treatment filters and lifting pumps, construction of a new primary sludge holding tank, and an upgrade to secondary treatment tanks. 

 

Coffey Construction (Ireland) Ltd is carrying out these works on behalf of Uisce Éireann, and works are due to complete in 2028.

 

Uisce Éireann is responsible for delivering public drinking water and wastewater services for the people of Ireland. We are committed to enabling communities to thrive by continuously upgrading and developing critical infrastructure to support sustainable growth and development, providing safe drinking water, and enhancing the environment. To find out more visit www.water.ie  

 

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