1 liter of mineral water costs approx. 50 cents. You can get 250 liters of tap water for the same price.
On German roads, one lorry in ten transports bottled water.
6 million liters of oil are used per year solely for producing plastic bottles.
German Federal Statistical Office
Trinkwasser-Wissen.net (Portal with information on tap water)
Stiftung Warentest (German consumer organization)
Utopia.de (Portal with information on sustainable consumption)