Killeens Wastewater Treatment Plant Upgrade

Uisce Éireann is commencing construction works to deliver upgrades to the wastewater infrastructure in Killeens, County Cork.

Uisce Éireann is commencing works to deliver upgrades to the wastewater treatment plant in Killeens, Co. Cork, with an investment of over €7.3 million. This project is being delivered as part of Uisce Éireann’s Small Towns and Villages Growth Programme and is anticipated to begin construction in Early September 2025. 

The area is currently served by overloaded and outdated wastewater treatment infrastructure and therefore plant and network upgrades are required. 

This project is being delivered to support existing and future developments within the community. It will improve the capacity of the existing wastewater network in the area, improving performance, reducing demands on the current network and mitigating the risk of sewer flooding within the catchment.

The upgrade works carried out as part of this project will involve:
 

• Construction of a new pumping station to convey the current and future raw wastewater flows to the Cork City sewer network
• Construction of a new Storm Holding tank with a capacity of 108m3 & associated equipment.
• New SWO Overflow to adjacent river Blarney in accordance with the WWDL.
• Construction of a 1,100 m long rising main to the high point of the pipeline and 1,793 m gravity sewer main to the connection manhole.
• Decommissioning and demolition of redundant existing process units, including:
  • Rotating biological contactors, clarifiers, final effluent pump stations, sludge holding tank, tertiary sand filter, existing inlet screening and storm tank, and  demolition of the existing primary settling tank
• Rehabilitation of the site following demolition to replenish biodiversity
• Implement renewable energy through solar PV
  
   

The upgraded wastewater treatment plant will bring benefits to the area including: 

• Improved water quality in the River Blarney
• Facilitate social and economic growth, including planned residential development.
• Ensure the required capacity of the wastewater infrastructure to support future development in the area.
• Improve the capacity of the existing sewers, improving performance and reducing the risk of sewer flooding in the area.
   

The construction of a 1,100 metre long rising main to the high point of the pipeline and 1,793 metre gravity sewer main to the connection manhole. Works will commence on this section of project in Q3 of 2025 with the construction phase completed by the end of Q1 2027. 

Signage & Traffic management will be in place during this time to carry out the works safely and efficiently in the form of Stop/Go Systems. (See image below depicting the work areas.) Works will be carried out intermittently throughout to minimise disruption to the local community. Local and Emergency access will be maintained throughout these works.
 

Uisce Éireann will endeavour to keep all stakeholders informed as we progress this essential wastewater upgrade project.

Customers can phone Uisce Éireann on 1800 278 278 if they have any questions about the project or visit www.water.ie