Government Publishes new NDP Sectoral Plan for Water Services and Water Quality

The Department of Housing, Local Government and Heritage has now published its National Development Plan (NDP) Sectoral Plan for Water Services and Water Quality, setting out how record investment of €12.2 billion will be deployed across the water sector over the coming years. More than 95% of this – €11.7bn – is allocated to Uisce Éireann, making it the largest capital programme in the history of Irish water services. 

*Download the plan in full at: https://assets.gov.ie/static/documents/799db031/Investment_Plan_Water_Services_and_Water_Quality.pdf

Critically, this is not a standalone utility upgrade. Water infrastructure is now a direct determinant of the State’s ability to meet housing targets. Without increased treatment capacity, expanded networks and improved environmental compliance, planned housing delivery simply cannot proceed. Government finally acknowledges this interdependency – and the numbers reflect it.

Water Infrastructure as a Hard Constraint on Housing Delivery

The new sectoral plan makes explicit what industry has long understood: housing output is capped not by land or zoning, but by the availability, reliability and regulatory compliance of water and wastewater systems.

Key pressure points include:

• Capacity constraints across cities and regional towns, many of which cannot accommodate additional units without major upgrades to water and wastewater treatment plants.
• Regulatory compliance obligations, particularly EPA Remedial Action List drinking water plants and Priority Action List wastewater plants, which must be addressed before further growth can be sanctioned. 
• A decade-long ramp-up in demand that existing networks were never designed to support.

To address these issues, Uisce Éireann’s Strategic Funding Plan – now backed by multi-year certainty under the NDP – targets over 340 new or upgraded treatment plants, approximately 900km of network rehabilitation, and 360km of network extensions nationwide. 

For the housing sector, the most consequential element is the Growth Investment Programme, a €1.7bn package focused on delivering water services capacity in locations aligned with the National Planning Framework, Regional Spatial & Economic Strategies, and local development plans. At least 71 settlements have been identified where existing treatment capacity can support accelerated development in the short term. 

This is the first time such cross-referencing between housing policy and water capital planning has been formalised at national level.

Major Projects: Critical Path for Dublin and the Regions

Two major infrastructure schemes dominate the plan – both essential for Dublin’s housing and economic trajectory:

1. Water Supply Project – Eastern and Midlands Region (WSP-EMR)

A national-scale project capable of serving up to 50% of the population, supplying treated water from the Parteen Basin to Dublin with offtakes across Tipperary, Offaly and Westmeath. This will fundamentally reshape long-term water security for the metropolitan area. Planning is expected to be submitted in 2025, with delivery forecast for 2032. 

2. Greater Dublin Drainage (GDD)

A new 500,000 PE wastewater treatment plant at Clonshaugh, a 14km orbital sewer, and an 11km marine outfall. Without GDD, further housing in north Dublin and surrounding counties will remain severely constrained. Planning approval was granted in 2025, though Judicial Review proceedings are ongoing. Completion is targeted for 2032. 

Beyond Dublin, significant upgrades in Limerick, Waterford, and the Ballymore Eustace–Saggart resilience project each exceed €200m and are designed to address population growth and regional development priorities. 

Rural Water and Water Quality: Small Budgets with Big Impact

Although €230m for rural water represents a small share of total investment, its strategic importance is high. Group water schemes service 6% of households and are often located in growth towns with acute supply or quality issues.

Water quality programmes — funded at €306m — target agriculture, urban runoff and river barriers, supporting Ireland’s Water Framework Directive obligations. These measures will not directly release housing units, but they reduce environmental risk, accelerate planning decisions, and avoid ecological bottlenecks that can delay major schemes.

What This Means for Housing, Planning and the Construction Sector

1. A move from reactive to planned capacity delivery

The State is finally shifting from incremental upgrades to long-term, generational investment planning. This gives developers, planners and local authorities a clearer line of sight on when capacity will be available.

2. Expect more precision in housing approvals

Local authorities will increasingly condition development on confirmed water and wastewater capacity. Locations identified in the Growth Investment Programme may see accelerated approvals.

3. Continued pressure on statutory timelines

Major projects are planned to 2031–2032. Delays in planning or licensing could have downstream effects on projected housing delivery.

4. Environmental compliance becomes non-negotiable

EPA oversight is embedded in investment prioritisation. Plants on the Remedial Action and Priority Action lists will move up the queue, but until works are complete, development in some areas will remain constrained.

5. Infrastructure is now the defining variable in housing policy

Transport, energy and water are now explicitly tied to new housing targets. This integrated approach is overdue – but transformative.

Bluntly, Ireland cannot meet its housing targets without modern, resilient, and compliant water services – and our team at NVM will continue to support this objective through the provision of advanced environmental, hydrometric and geotechnical monitoring solutions, real-time data acquisition and analysis, and instrumentation programmes that ensure infrastructure delivery is underpinned by rigorous measurement and insight.