Tap water is by far the best drink there is

• fits with every food
• costs almost nothing (2l every day costs 1,46€ per year)
• healthiest drink (no sugar, chemicals, alcohol)
• requires no work, doesn't need to be brought home from the store, doesnt need heating up or mixing
• works in every occasion (wouldn't drink whiskey for breakfast or coffee with pasta)

I know many arguments dont work in other countries, especially outside the EU but that's just an argument tap water should be improved there.

Edit: "chemicals" means artificial substances for flavor/color/preservation in this case. It translates poorly from german but what I meant by that should be obvious without this clarification anyways.