Arthurstown, Ballyhack & Duncannon Wastewater Treatment Plant

Wastewater Project

Irish Water, working in partnership with Wexford County Council, has commenced works to end the discharge of raw sewage from Arthurstown, Ballyhack and Duncannon. This €12.8 million investment involves the construction of a new wastewater treatment plant in Arthurstown which will also serve Ballyhack and Duncannon. SISK are carrying out works on behalf of Irish Water.

In Progress
€12.8 million


  • The new Wastewater Treatment Plant (WWTP) will bring benefits to Arthurstown, Ballyhack and Duncannon in terms of health, integrity of the environment and improved water quality for all
  • The proposed WWTP will improve the water quality in the Barrow Nore Suir Estuary
  • Cleaner water will enhance the amenity value of the beaches and harbours at Arthurstown, Ballyhack and Duncannon and act as a platform for social and economic development
  • The new pipes, pumping stations and wastewater treatment plant have all been sized to accommodate an increase in the local population and will facilitate future growth in the area
  • The project will assist with ensuring that the water quality standards set down by regulatory bodies will be achieved

What is involved as part of this project?

The project includes:

  • Construction of a new wastewater treatment plant at Arthurstown that will serve a population equivalent of 1,875 which will eliminate raw sewage being discharged to the estuary.
  • Development of three new wastewater pumping stations near the existing outfalls at Arthurstown, Ballyhack and Duncannon and new pipelines to transfer wastewater to the new wastewater treatment plant.
  • Construction of sewer pipelines to bring untreated wastewater to the wastewater treatment plant and treated water to the existing outfall pipe at Arthurstown.
  • The existing outfall pipe at Arthurstown will safely discharge the treated wastewater effluent to the Barrow, Nore, Suir Estuary.

What are the next steps?

  • It is expected that the project will be completed in 2023.
  • We will endeavour to keep the local community informed as this essential project progresses.

We’re working to eliminate raw sewage discharges in Ireland.

  • Work is now complete in 18 areas around the country where there was no sewage treatment before.
  • 60% of raw sewage is now being treated 60% of raw sewage is now being treated.
  • This year we have 15 locations under construction across the country, prioritising the areas where it can make the biggest impacts first.
  • We are on track to eliminate the majority of raw sewage discharges by the end of 2025, with a total investment of €700 million.
  • In Wexford, construction works are progressing to provide wastewater infrastructure for Arthurstown, Ballyhack, Duncannon and Kilmore Quay.

Who should I contact if I require more information?

For further information you can contact the Project Team at