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Regional Water Resources Plan - South East

The development of the Regional Water Resources Plan South East (RWRP- SE) will allow Uisce Éireann for the first time to review water supply needs collectively for the entire South East region across the spectrum of risk including quality, quantity, reliability, and sustainability. The plan will allow us to consider local options and larger regional options that can address water needs across multiple supplies.

As part of the RWRP-SE Uisce Éireann reviewed the water supply needs across 111 water resource zones and identified options to address any additional requirements. The plan allows us to consider local options that can resolve needs within individual supplies and regional options that can address needs across multiple supplies.

The RWRP-SE has now been adopted, accompanied by a Strategic Environmental Assessment Statement and an Appropriate Assessment Determination. A Consultation Report summarising feedback received during the public consultation has also been published.

The outcome of the draft RWRP-SE includes:

  • Merging supply systems within the region to form 12 larger interconnected Water Resource Zones, reducing the number of Water Resource Zones in the South East Region from 111 to 58.
  • Upgrading 13 existing water treatment plants (WTPs) to reduce water quality risks across all WRZs.
  • Increasing the capacity of 24 (of the remaining 56) WTPs to address the current supply deficit and to meet forecast growth. Interconnecting supplies via 455 kilometres of trunk mains.
  • Development of 13 new water treatment plants.
  • Eventual decommissioning of 63 water treatment plants.
  • Reducing leakage to 24% of regional demand through pressure management, active leakage control and targeted asset replacement.

The outcomes and benefits of this Regional Preferred Approach include:


Improved performance across all of the water supplies in terms of Quality and Quantity;


Strategic transformation from the existing fragmented supply to a more resilient and sustainable interconnected supply; and


Ability to support growth and economic development across the South East Region.

Regional Water Resources Plan: South East

South East Region

The Region covers approximately 9,200 square kilometres (representing about 13% of the Republic of Ireland) and extends from the south-east coast, south of Arklow in Wicklow, towards Ardmore, Ballyduff in Waterford and Limerick in the west. The region is supported by a strong network of key towns that provide secure employment and have economic growth potential. Uisce Éireann supplies around 161 million litres of water per day to a population of 369,240 people and 29,700 businesses in the South East region. This represents more than 9% of Uisce Éireann's total supply nationally.

Find your townland

A list of the cities, towns, villages, and townlands covered by this Regional plan is available in the links below. The information provided in the townlands, townsand settlement lists that are included in the Regional Water Resources Plan South East are sourced from Ordnance Survey Ireland.

Study Area Technical Reports

To deliver the draft RWRP-SE, we subdivided the region into smaller units to enable us to manage the process of identifying potential water supply solutions (options) and the selection of our Preferred Approaches to resolve our water supply and water quality deficits. These smaller units are referred to as Study Areas.

A detailed Technical Report is provided for each Study Area describing the solution types at Study Area level and providing a summary of the detailed Option and Approach Development process and resulting outcomes for each Study Area.

The Study Area technical reports are provided as appendices to the RWRP-SE document.

The South East Region comprises three Study Areas as shown in the image.

Regional Water Resources Plan South East Webinar Recording

Please see a pre-recording of the presentation below to give you an overview of the draft plan.

RWRP South East Public Consultation Roadmap

Regional Water Resources Plan South East video