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Castleblaney Wastewater Treatment Plant Upgrade

Wastewater Project

Uisce Éireann has invested €6 million to modernise and upgrade the wastewater treatment plant in Castleblayney.

Uisce Éireann, working in partnership with Monaghan County Council, has completed the upgrade of Castleblayney Wastewater Treatment Plant. The Castleblayney Wastewater Treatment Plant was originally constructed in the 1980s. The mechanical and electrical equipment had exceeded its operational life and required an upgrade. These works will ensure the wastewater treatment plant is fully compliant with EU Urban Wastewater Directives. EPS Group carried out the works on behalf of Uisce Éireann.

€6 million
Nenagh Waste Water Treatment Plant


  • Improve the performance of the wastewater treatment process
  • Ensure compliance with Urban Wastewater Treatment Regulations 2001 and the EPA Wastewater Discharge Licence
  • Allow for future growth in local population and economic activity in Castleblayney

What is involved?

  • Upgraded and modified the existing wastewater treatment plant and increased the capacity of the plant and replaced the inlet works and associated equipment
  • Upgraded the wastewater aeration tank and associated equipment
  • Provision of new sludge handling facilities
  • Installed an alarm system to communicate signals between all pumping stations within the collection network and wastewater treatment plant
  • Constructed a new sewer from Muckno pumping station to the wastewater treatment plant
  • Constructed a new access road to the wastewater treatment plant
  • Decommissioned the Muckno pumping station

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