Stillorgan Water Main Replacement

National Leakage Reduction Programme

Irish Water, in partnership with Dun Laoghaire Rathdown County Council, is replacing ageing water mains in Stillorgan, Co Dublin to improve security of supply, improve water quality and reduce high levels of leakage.

The programme to replace problematic water mains on Lower Kilmacud Road, Stillorgan, Co Dublin is scheduled to commence in January 2019. These works are being carried out as part of Irish Water’s national Leakage Reduction Programme.
The works will take place in two sections. With section 1 beginning in late January with 230 metres of new water main being laid along Lower Kilmacud Road between the junctions of Allen Park Road and Glenalbyn Road. In section 2 of the works 155 metres of new water main will be laid at a later date along Lower Kilmacud Road from the junction with Glenalbyn Road to the junction with Old Dublin Road.
Leakage Reduction


​A Reliable Water Supply

  • Replacement of water mains and service connections will reduce the instances of bursts and water outages and will ensure a reliable supply of water to customers and local businesses in the area

Improved Water Quality

  • Replacing existing old cast iron and lead from the public water network with new modern pipes will reduce the risk of contamination

Reduced Leaks

  • Replacement of water mains and service connections will eliminate existing leaks and reduce the amount of clean drinking water lost into the ground

Improved Operation and Maintenance

  • These works will deliver cost savings by providing improved water network operation that will require less maintenance in the future


  • The works involve the replacement of approximately 385 metres of aged cast iron water mains with high density polyethylene (plastic) pipes/pipe material
  • The works will also involve laying new water service connections from the public water main in the road to customers’ property boundaries and connecting it to the customers’ water supply
  • Where the existing service connections on the public side are lead these will be replaced as part of this improvement work