Mercer Island residents are being asked to conserve water after Seattle Public Utility crews encountered an "unexpected problem" during planned construction on supply lines. Mercer Island is not being supplied with incoming water, according to the city. The island's water system is operating from reserve tanks. There is no impact on water quality or safety, according to the City of Mercer Island. Read more: https://www.king5.com/article/news/local/water-supply-mercer-island/281-dfef22f5-c05e-4593-a2d4-ca94307da846