Arklow Wastewater Treatment Plant, in County Wicklow, Ireland, has been shortlisted for the prestigious 2025 Royal Institute of Architects of Ireland (RIAI) Public Choice Award.
This recognition celebrates the plant’s innovative design and its transformative impact on the Arklow community.
Arklow was identified by the Environmental Protection Agency (EPA), as an area where wastewater was discharged into the Avoca River without any treatment. The European Commission took Ireland to the Court of Justice of the EU for its failure to ensure that urban wastewater in 38 agglomerations across the country is adequately collected and treated to prevent serious risks to human health and the environment.
Planning was submitted in September 2018 for the construction of the Arklow WwTp with construction commencing in 2021. Ward and Burke Construction Limited completed the works, overseen by engineers Ayesa, 6 months ahead of schedule and on budget.
Designed by Clancy Moore Architects in collaboration with Ayesa Engineers, the €139 million facility marks a significant milestone as Ireland’s first wastewater treatment plant to integrate architectural design from inception.
Michael Tinsley, Senior Portfolio Manager with Uisce Éireann, said:
“Previously, Arklow faced environmental challenges due to the absence of wastewater infrastructure, leading to untreated sewage entering the Avoca River. The completion of this project has not only addressed these issues but has also reshaped the town’s visual identity, blending architecture with the natural beauty of the Avoca River and its surroundings.”
The plant’s distinctive mint-green structures have garnered attention for their aesthetic appeal and functionality. Features such as bat-friendly louvres and an on-site solar farm underscore the project’s commitment to sustainability.
The Architectural Association of Ireland recently awarded the plant its highest honour, the Downes Medal, for ‘outstanding architectural merit’.
The RIAI Public Choice Award is unique in that it is determined by public vote, offering communities an opportunity to celebrate architectural excellence that enhances daily life.
The Arklow plant secured one of 48 coveted spots on the shortlist.
