Mallow Wastewater Treatment Plant Upgrade

Irish Water is progressing with upgrades to increase capacity and ensure environmental compliance.

Irish Water has awarded a contract to Glan Agua Limited to complete the project.

In Progress

Irish Water, working in partnership with Cork County Council, is progressing with upgrades to wastewater treatment plant in Mallow, Co. Cork. The current wastewater treatment plant is outdated and overloaded. Once completed, this project will increase the capacity at the plant to benefit homes and businesses in Mallow and the surrounding area.

Mallow treatment plant upgrade

What is involved as part of this project?

As part of this €20 million project, Irish Water will:

  • Upgrade of the existing Mallow WWTP
  • Upgrading of foul and storm pumping at Mallow Bridge
  • Provision of stormwater storage at the new Mallow Bridge Pumping Station

What are the benefits of this project?

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

  • Modernise and improve the performance of the wastewater treatment infrastructure
  • Increase the treatment capacity and resolve overloading of the plant
  • Allow for the long-term social and economic development of Mallow

Mallow treatment plant upgrade

Details of upcoming works:

LocationTimelinePlanned WorksTraffic Management
Pumping station January 2022

Continue with pump station RC works.

Complete storm tank roof RC works.

Commence mechanical install to storm tank.

Complete backfill to pumping station.

Complete 1800mm incoming pipeline and manhole

Complete 1500mm overflow lines and manhole

Minor increased levels of construction vehicles
Wastewater Treatment Plant January 2022

Complete mechanical works to aeration tanks and install inlet works.

Complete alteration works to existing building.

Continue ducting and process pipework installation.

Cois na hAbhainn January 2022

Complete 750mm gravity pipework

Minor increased levels of construction vehicles