Half a billion euro investment targets water capacity constraints in eastern region
30 critical projects planned as supply struggles to keep pace with housing and population growth
16 April 2026 | editor@breakingground.news
Uisce Éireann is to invest more than €500m in 30 critical water supply projects across Ireland’s eastern region over the next decade, as capacity constraints continue to pose a risk to housing delivery and economic growth.
The investment, delivered under the utility’s new Water for Growth Programme, will focus on upgrading treatment plants, constructing new trunk mains and delivering strategic water storage infrastructure across Dublin, Meath, Kildare, Wicklow and Louth.
Water supply across the eastern region is currently operating at, and at times above, full capacity, requiring ongoing pressure management, storage optimisation and conservation measures to maintain service levels.
For homebuilders, the programme represents a significant intervention aimed at addressing one of the most persistent infrastructure bottlenecks impacting housing delivery in the Greater Dublin Area and surrounding commuter counties.
The €500m investment sits alongside a further €420m committed over the next five years to reduce leakage in the network. Without this intervention, Uisce Éireann estimates that up to 250 million litres of treated water could be lost daily.
Key projects within the programme include a €64m upgrade to the Leixlip Water Treatment Plant, which serves approximately 620,000 people, alongside new trunk mains from Ballycoolin to Kingstown and additional strategic storage capacity across the greater Dublin area.
Uisce Éireann said the combined investment will increase system capacity, modernise ageing infrastructure and improve the security and reliability of water supply over the coming decade.
The utility has identified resilience as a critical issue within the current network, particularly as population growth accelerates and demand from residential and commercial users continues to rise.
The Water for Growth Programme forms part of a wider national capital investment plan exceeding €12bn in water infrastructure over the next ten years, encompassing treatment upgrades, reservoir expansion and network improvements.
While the long-term solution to eastern supply constraints remains the proposed transfer of water from the River Shannon, that project is not expected to be operational until the mid-2030s, leaving interim infrastructure upgrades essential to sustaining housing and development activity in the region.
A number of the 30 projects are already under way, including phased works at the Leixlip facility, which is the second largest water treatment plant in the State.
For the construction sector, the scale and timing of this programme will be closely watched, particularly in the context of ongoing constraints linking water capacity to planning approvals and development viability in key growth areas.
