About this project


The Cork Lower Harbour Main Drainage Project aims to provide enhanced wastewater treatment through the development of a new wastewater treatment plant at Shanbally, Co. Cork. The project is important in terms of protecting the environment, facilitating economic development and providing for a growing population.

The plant will serve the areas of Cobh, Carrigaline, Crosshaven, Passage West/Monkstown (including Glenbrook) and Ringaskiddy (including Shanbally & Coolmore).

Co. Cork
In Progress
Aerial view of Cork Lower Harbour

What is involved?

The Cork Lower Harbour Main Drainage Project consists of: 

  • A new Wastewater Treatment Plant (WwTP)
  • 15 new pumping stations
  • Upgrading of 4 existing pumping stations
  • Approximately 30km of new sewers
  • A drilled crossing under the estuary

View the Cobh to Monkstown Estuary Crossing Information Sheet

View the Cobh Networks Information Sheet

The raw sewage from Cobh, Passage West, Glenbrook, Monkstown, Carrigaline, Ringaskiddy and Shanbally will be collected into new pipes and redirected to a new WwTP plant at Shanbally. The treated wastewater will then be safely discharged into the estuary via an existing pipeline near Dog Nose Point.

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