Water supply to several areas in Colombo will be disrupted for 24-hours commencing from today 9 am, the National Water Supply and Drainage Board (NWSDB) said.Accordingly, Kolonnawa Urban Council limits, Rajagiriya, Nawala, Moragasmulla, Obeysekarapura, Bandaranayakepura, Kostwatte and the stretch of road from Rajagiriya to Open University in Nawala will be affected by the water cut. According to the Water Board, the water cut is being imposed owing to the ongoing Metro Colombo Urban Development Project.