In the minds of the Danes, there is an absolute confidence that they can drink tap water directly from the tap every day.A few days ago, a reporter from China Environment News came to this country surrounded by the sea. Finn Mortensen, Executive Director of Green Nation, is a "big user" of tap water, and in his opinion, the quality of tap water in Denmark is higher than any bottled water available on the market.A crystal clear river in the heart of Copenhagen, Denmark. Photo by Niu QiupengThe re