Portlaw Wastewater Treatment Plant Upgrade

Wastewater Project

Modernising and upgrading the treatment plant in Portlaw Co. Waterford to ensure environmental compliance.

Irish Water, working in partnership with Waterford City and County Council, has invested €2 million to complete essential upgrades to the wastewater treatment plant at Portlaw, Co. Waterford.

Veolia Ireland Limited has delivered this project on behalf of Irish Water, with this project completed in Q4 of 2019.

This project has upgraded and modernised several elements of the wastewater treatment process at the plant, to ensure compliance with the Wastewater Treatment Regulations. This included the construction of a storm water storage facilities and clarifier, and upgrades to the inlet works and aeration tank at the plant.

€2 million


  • Upgrade existing infrastructure at the plants and provide new elements where defects identified
  • Improve the performance of the wastewater treatment process at the plant
  • Prolong the operational life of the existing plants
  • Reduce the risk of storm water flooding
  • Ensure compliance with Urban Wastewater Treatment Regulations 2001
  • Provide for growth and development in Portlaw and surrounding areas

What is involved?

  • Upgraded the inlet works and the aeration tank at the plant
  • Constructed new storm water handling facilities
  • Installed a new clarifier and refurbished the existing clarifier
  • Upgraded the flow measurement, sampling, automation and control facilities