Here, in the Netherlands, all people drink tap water, except when in restaurants. This of course has to do with the fact you can charge 2 euro for a glass of tap water while people will feel ripped off if you charge that for a glass of tap water. There are movements going on to persuade bars, restaurants to also serve tap water for environmental reasons. Bottled water is a huge waste of resources (in countries where the tap water is as good or better as bottled water).
By the way, my tap water, which is pumped out of the ground about 2 km from here, contains 0.12 mg/l fluoride (according to the water company).