Strict controls The local water suppliers filter the groundwater until pollutants such as nitrate or bacteria have been removed. The Federal Environment Agency regularly has samples of tap water tested, 99 percent of which were rated "very good" in the last study. Additional filter systems in the home are therefore unnecessary: our tap water is safe and therefore healthy!

Check pipes Lead pipes were often installed in buildings built at the end of the 19th and beginning of the 20th century in particular. These are harmful to health as the lead can get into the drinking water. Since 2014, landlords have been obliged to replace lead pipes in apartments. If you are unsure, it is best to ask.

Let itrun Experts advise not to take stale water from the tap to drink or prepare food, but to let it run until it has cooled down. If you suspect contamination, you can ask the waterworks to carry out an analysis. This costs from 20 euros, but is often free of charge for households with pregnant women and small children.