1. Switzerland: With strict treatment standards and superior natural resources, Switzerland ranks number one for best EPI. In fact, Swiss tap water is as pure as its bottled water – but 500 times cheaper.
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For the cleanest water in Europe: The Lobau River, AustriaAustria has the cleanest bathing water in Europe, according to the European Environment Agency. Nearly 98 per cent of its bathing areas - where people regularly swim - were given an 'excellent' rating last year.
Europe's Water Is Generally SafeThe tap water throughout most of Europe is completely safe to drink. The taps in hotels, homes, restaurants and cafés all run with potable water. Of course, there's always room for common sense.
A boil water advisory is issued when harmful germs (e.g., E. coli bacteria, Giardia parasite) may be in a drinking water supply. Drinking water contaminated with these germs can make people and animals very sick. Boiling will kill the germs and make the water safe to drink.