水すい道どうの水みずMeanings1expression, nountap waterRefers to water from a public water supply, as opposed to bottled or well water. Common in everyday contexts.日本にほんの水すい道どうの水みずは飲のめますか。Can you drink tap water in Japan?水すい道どうの水みずで顔かおを洗あらった。I washed my face with tap water.