Don't buy mineral: 10 cities in the world with the cleanest tap water - voila! tourism. Helsinki, Geneva and Berlin are just some of the cities that offer cleanest and safest water.
And in which European city is the tastiest tap water on the continent? Answer in voila!'s tourism answer quiz . Recycled water video/photo: Angle Quite a few travelers sometimes express concern about the quality of the drinking water at the destination they are flying to.