COLOMBO (News 1st); The National Water Supply and Drainage Board (NWSDB) has announced a 12-hour water supply interruption today (7), affecting several areas in the Gampaha District due to essential maintenance work at the Sapugaskanda Grid Substation operated by the Ceylon Electricity Board (CEB).The water cut will be in effect from 8:30 AM to 8:30 PM, impacting the following areas:Urban Council Areas: Peliyagoda, Wattala, Ja-Ela, Katunayake, Se...