Water pipeline to replace 150 year-old tunnel

Originally built in the 1860s, the works at the Vartry Water Supply Scheme will see the 4km-long tunnel replaced by two reservoirs, a water treatment plant, and 40km of trunk mains that deliver water to open storage reservoirs at Stillorgan in Dublin.
Irish Water said the work is needed as the tunnel is now in a poor state of repair, and that the new pipeline will secure and safeguard the water supply to over 200,000 people in one of the most densely populated areas in the country. The outlay is part of a €200m planned investment in water infrastructure in the region.