Capacity registers

As part of our commitment to support growth and development, we publish annual water supply and wastewater treatment capacity registers.

The capacity registers are 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 available in supplies and at treatment plants changes regularly based upon changing demand or loads received from new and existing customers. Our registers are an indication of available capacity based on available information at the date of issue and are subject to change.

These registers cannot be taken as confirmation that capacity is available for a particular development and Uisce Éireann does not accept liability for the consequences of any person relying on this information. 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. 

These registers provide supply or treatment capacity information only and do not provide an indication of network capacity. In cases where a new development is planned, we may need to make upgrades to the network. We assess whether the network can support a new development during the connections process.

Learn more about the Pre Connection Enquiry and Connection Application process in the Connections section of this site.

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. 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.