Mercer Island residents are being asked to continue to conserve water after crews were able to make repairs to the supply line Thursday. Water is flowing and will be going back into reservoir tanks after testing and flushing is done Thursday evening, according to city officials. Residents are asked to continue conserving water for up to 72 hours until the reservoir tanks can be fully replenished. The City of Mercer Island receives its potable water from Seattle. That water is contained in two large reservoir tanks. The city has asked that residents conserve water since Wednesday, after crews with Seattle Public Utilities ran into an "unexpected problem." During scheduled maintenance, crews encountered a seized valve while attempting to reconnect the water supply lines. READ THE FULL STORY HERE: https://www.king5.com/article/news/local/water-supply-mercer-island/281-dfef22f5-c05e-4593-a2d4-ca94307da846