So why not drink the water straight from the tap? It's easy on the wallet and the environment. Because unlike drinking water, mineral water requires energy-intensive packaging and transportation.

40 percent of Wiesbaden's water comes from the Hessian Ried and 30 percent each from the Wiesbaden Taunus tunnels and the Schierstein waterworks.

Knowing the water hardness in your own household is important in order to be able to dose detergents correctly and set dishwashers accordingly.

The water hardness in Wiesbaden is not uniform, as the drinking water comes from the Rhine, the Hessian Ried and the Taunus tunnel.

The hardness levels of the supply area can be found on the website of the water supply company of the state capital of Wiesbaden.

On average, every German citizen consumes 129 liters of drinking water every day. This puts Germany in a good position in an international comparison. Nevertheless, it is worth reducing consumption even further. The tips and tricks from the climate team at the Environment Agency are a simple and practical aid.