In Progress
The upgraded wastewater treatment plant in Osberstown.


  • The sewer network will have more capacity, which will facilitate future growth and economic development
  • Treated wastewater will be cleaner and will meet all regulatory requirements, which will help Ireland avoid substantial EU penalties
  • The number of emergency overflows to the River Liffey will be significantly reduced
  • There will be a reduced risk of flooding in Naas


  1. Significant upgrades to the Osberstown wastewater treatment plant (now complete).
  2. 28Km of new gravity sewers and rising mains to reinforce and improve the existing network.
  3. 6 new or upgraded pumping stations, all with stormwater storage tanks to reduce the risk of emergency overflows.

What is happening in Sallins?

Irish Water is working in partnership with Kildare County Council to upgrade and replace the sewers in several locations in Sallins. To minimise disruption, the work will be completed in phases and traffic will be managed through stop/go systems.

  • We have begun work on the construction of approximately 700m of new main sewers in the Castlefen and Castlesize estates.
  • We plan to install over 650m of new sewer along Millbank and the R407 Clane Road, north of the Canal. This new interceptor sewer will serve Sallins town centre.

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