This is not the most original idea, but still so many people do not do it: In countries where the tap water quality is really good, we do not need any sales packaging for water and there is no need to buy water in the supermarket. You can drink it from the tap when at home or in a restaurant using a nice glass. When you travel you can take your own reusable bottle with you. There are already really nice sustainable reusable bottles out there. The only question is, how can we convince people to do this. Is there anyone out here that likes to join me in developing this solution further?