8.35 TWh of energy needed

8.35 TWh of energy was needed to run the German water supply in 2020.

By the way, that is 0,19% of the whole German primary energy demand and is only fresh water, not including sewage.

Source: https://www.energieforschung.de/de/aktuelles/projekteinblicke/2023/wasserversorgung-vom-grunde-auf-energieeffizient

Photo: https://www.pexels.com/de-de/foto/sendemast-unter-grauem-himmel-189524/