Uisce Éireann has begun works on a €25 million strategic trunk water main in the Clontarf area, aimed at strengthening resilience and long‑term water security across north Dublin city. The North City Arterial Main (NCAM) will also add the network capacity needed to facilitate 12,000 new homes, supporting growth across the region.

The project will install a new high‑pressure trunk main that integrates with the existing arterial network to create a more robust and direct route from reservoir to tap. This added interconnectivity is intended to reduce the risk of supply interruptions for approximately 160,000 properties across the Dublin region. The upgrade forms part of ongoing investment in the Greater Dublin Area's water services; a network originally built for around 500,000 people now serves about 2 million, requiring significant works to future‑proof ageing infrastructure and sustain a growing population.

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Minister for Housing, Local Government and Heritage, James Browne, said: "It's important to see the commencement of this project, which will support the development of much needed housing in Dublin. Continued investment in public water services is critical to facilitating housing delivery, and to the development of cities and towns throughout Ireland. The increased funding that I have allocated to Uisce Éireann for 2026 will accelerate the delivery of water infrastructure and support the development of new homes across the country."

According to Programme Manager, Jessica Dale: "The NCAM project is central to strengthening resilience in North Dublin's water network. As our population grows, we need modern, reliable infrastructure to safeguard supply, support new housing, and underpin economic development. These works are critical to ensuring that north Dublin city has the water capacity it needs — not just for today, but for generations and homes to come."

GMC Utilities Group will deliver the first phase on behalf of Uisce Éireann. Works will run from Causeway Road to Bayside Boulevard, including Greendale Road and Thornville Road, and will comprise:

• 2.5km of new water main along James Larkin Road/Dublin Road

• 1.1km of new water main along Greendale Road, Thornville Road and Kilbarrack Parade

To carry out the works safely, the southbound lane on James Larkin Road will be closed from Monday, 16 February, until mid‑summer. The closure will operate 24 hours a day, seven days a week. Standard working hours will be Monday to Friday, with weekend activity as required. Diversions will be signposted via Howth Road and Watermill Road, with access maintained for residents, businesses and emergency services throughout.