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Water supply capacity register

A water supply capacity register gives you an indication of whether there's enough water supply in an area to make property development a possibility.

The county registers on this page give an indication of the available water supply capacity in water supply in each Local Authority area to support growth. 

The capacity register is intended to inform forward planning activities, by indicating the ability of the Uisce Éireann treatment and production infrastructure to accommodate growth, estimated using a standardised methodology.  

The capacity of the water supply changes based upon water availability, and demand of existing and new customers. Our registers are an indication of available capacity based on available information at the date of issue and are subject to change.

We continue to make capacity improvements using the 3 pillars outlined in the National Water Resources Plan Framework. These are:

  • Lose Less - reduce leakage and increase network efficiency
  • Use Less - apply water conservation measures
  • Supply Smarter - use sustainable supplies

The register provides an indication of the available capacity to support 2033 population targets in a Water Resource Zone (WRZ). The indication of available capacity is based on estimates of future populations and is informed by national, regional and local planning policy. 

These registers do not take network capacity into account. In some cases, we may need to make upgrades to the water network to support a development. For example, we may need to upgrade the existing pipe to a larger pipe so that we can deliver water to a proposed development site without causing problems for existing customers. We assess whether the water network can support a development during the water connections process.

In all instances if you are considering progressing a development you should contact our Connections team who will provided a greater level of detail in relation to the availability of water supply capacity.

Please note:

If a capacity register states there is available capacity, that is not confirmation that a connection will be approved. Uisce Éireann does not accept liability for the consequences of any person relying on the information in these registers. At all times an executed Connection Agreement with Uisce Éireann is required to ensure a connection can be made and capacity is available for your development.

In all instances if you are considering progressing a development you should contact our Connection and Developer Services team who will provide an up-to-date view and greater level of detail in relation to the availability of capacity. Learn more about the Pre Connection Enquiry and Connection Application process in the Connections section of this site.

All new Connections are subject to Uisce Éireann’s Connections Charging Policy and at all times the issue of a connection offer is a matter for the discretion of Uisce Éireann. 

Learn more about our capacity registers and view them by clicking on the links below.

Information on planned projects can be viewed at the Projects section of this website.


Water Supply capacity registers

Connections FAQs

Check our frequently asked questions for more information about how to connect your housing development to the Uisce Éireann network.