Welshpool: Severn Trent to replace three miles of water pipe 8 May 2013 Last updated at 09:52 A major project to replace three miles (5km) of water pipe is starting in Powys and could take up to four months to complete. Severn Trent said the work would help resolve problems with leaks in Welshpool and secure customers' supply. The pipes will be replaced on the B4390 Manafon Road which might cause some disruption to motorists. But Severn Trent said it had worked closely with Powys council to try and minimise the congestion. The firm will be putting temporary traffic lights in place for two weeks. After that, Manafon Road will be closed from Pant-Y-Ffridd through to the junction with Fillindre and a diversion will be in place. Dave Cottom, programme manager at Severn Trent said: "By installing 5km of new pipes we are helping to resolve leakage problems in the area and make our Welshpool customers' water supply more secure. We recognise that while we are working to carry out these essential improvements there may be some disruption to road users. We've worked closely with Powys County Council to try and minimise congestion and we expect this work to last around three to four months.