Louth Wastewater Treatment Plants Upgrade

Wastewater Project

Irish Water is upgrading the wastewater treatment plants in Carlingford and Blackrock to improve the plants performance and ensure compliance.

Irish Water, working in partnership with Louth County Council, is upgrading the wastewater treatment plants in Carlingford and Blackrock Co. Louth. These improvement works are part of a €1.2 million investment to the northeast area, which will upgrade the aeration systems at the plants as part of the energy efficiency programme. 

This project will upgrade and modernise the aeration system at the treatment plants to a more energy efficient system, improve the plants performance and ensuring environmental compliance. Conway Engineering and Company Ltd is working on behalf of Irish Water to deliver these projects, with the works scheduled to commence in the coming weeks.

In Progress


  • Modernise and improve wastewater treatment processes at the plants
  • Improve energy efficiency at the plants
  • Improve the plants performance and resolve overloading issues
  • Ensure compliance with Urban Wastewater Treatment Regulations 2001

What is involved?

  1. Upgrade the aeration system at the plants, installing a fixed fine bubble diffused aeration system to improve energy efficiency
  2. Install associated brackets, blowers and pipe works and ancillary works
  3. Works will be carried out within the footprint of the plants, therefore minimising traffic disruption to residents and businesses in the surrounding area

Irish Water’s commitment to energy efficiency

These projects are part of Irish Water’s energy efficiency programme which upgrades, replaces and optimises inefficient plants and processes across the country to improve our energy efficiency and reduce carbon emissions.

More information

For further information you can contact the Project Team at communications@water.ie.