Green light for major wastewater upgrade to unlock sustainable growth and development in Portlaoise

Uisce Éireann has been granted planning permission for a major upgrade of the Portlaoise Wastewater Treatment Plant, a transformative investment that will future proof wastewater infrastructure in the Midlands town, support sustainable growth and development, and protect the local environment.

This once in a generation upgrade will increase the capacity of wastewater treatment in the town to population equivalent, of over 45,000, ensuring it can meet the needs of the growing community for at least the next 25 years. The project will also deliver improved treatment standards, contributing to enhanced water quality in the River Triogue and ensuring compliance with national and European wastewater regulations.

Speaking about the project, James Browne, T.D., Minister for Housing, Local Government and Heritage, said: “This investment to upgrade the Portlaoise Wastewater Treatment Plant will provide the critical infrastructure needed to support housing delivery and sustainable development in the area. Ensuring communities have the wastewater capacity required to grow is central to this Government’s priorities, and this project will play an important role in meeting future demand while safeguarding the River Triogue and the wider environment.”

Speaking about Uisce Éireann's commitment, Paul Fallon, Portfolio Manager, said: “We’re delighted to forge ahead with this much-needed project for the community.  This significant upgrade to the Portlaoise Wastewater Treatment Plant is about future-proofing essential wastewater infrastructure so the town can continue to grow and thrive in a sustainable way. Once complete, the upgraded plant will provide the additional treatment capacity required to support future development, while ensuring compliance with environmental standards.”

With planning approval now secured, Uisce Éireann will progress to the next phase of the project, including detailed design and preparation for construction.  

The upgrade has been designed with sustainability at its core, including the use of renewable energy through an on-site solar array and the creation of a dedicated biodiversity enhancement area. These measures will help reduce the plant’s environmental impact while supporting nature locally. 

The project will also modernise and expand the existing facility to improve how wastewater is treated and managed, including increased storage and additional treatment capacity to support future growth. Together, these improvements will deliver a more resilient, efficient, and environmentally responsible wastewater treatment plant for Portlaoise.

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.