Drink tap water! A reminder regarding the most eco-friendly drink: tap water. Better quality than bottled water (in particular in Munich as all the water comes from the Alps) and if you use glass bottles, there is no risk of any contamination of the water with e.g. bisphenol A which may leak out of the plastic bottles used for bottled water. And much better for the environment, you can easily avoid all those plastic bottles which need also a huge amount of energy during production and transport.
In case you like cool water, just keep always a bottle in your fridge.
Also healthy, because water is good for your body and contrary to soda, milk, or other drinks, no calories, much better also for your teeth.
You will also save a lot of money, as each person can easily spend 1 or 2 EUR per day on bottled mineral water, Coca-Cola, Fanta, milk, and so on. A family of four can then easily spend almost 800 EUR x 4 = 3200 EUR per year on drinks consumed during the day.
Tap water is cheap and healthier.