Leitungswasser Tap water does not have the quality that we are always fooled into by advertising. The permissible limit values for the load have been multiplied many times in recent years so that it is safe to say that they are well below the permissible limit values. Let yourself be told how it really is about our tap water.

Here are some examples to show you what's going on:
USA Today, Feb 12, 2018: Tens of millions of Americans exposed to unsafe drinking water each year
Science Mag, Feb 12, 2018: Millions of Americans drink potentially unsafe tap water. How does your county stack up?
Poison tap water in Major USA Cities
Light Your Water On Fire from Gas Drilling, Fracking
Drinking Water for 15 Million Americans Is Contaminated With a Toxic Chemical, Report Finds
State of American Drinking Water

Links:
CDC Regulations: The Safe Drinking Water Act