Chennai Metrowater builds walls to protect water conduit lines Updated: Updated: Project will be finished by end of January or early February Share Article AAA Supply route: The three conduit lines carry raw water from the Red Hills lake to the Kilpauk Water Works. | Photo Credit: K. Pichumani Project will be finished by end of January or early February Metrowater is constructing walls along its sites at various points to protect infrastructure used to transport water to the Kilpauk treatment plant. The agency is carrying out the work along stretches vulnerable to encroachment. The three huge conduit lines, in place since the British period, form one of the oldest existing infrastructure to carry raw water from the Red Hills reservoir to the Kilpauk Water Works. It is from here that water is treated and distributed to various points such as Valluvar Kottam, Anna Poonga (Washermenpet), Kannapar Thidal (Choolai) and Triplicane.