Wassertipps map

You can display all countries or restrict the display of drinking water zones to a single country. You can use the search field to search for individual towns and cities and centre the display on them.

The colours represent the different hardness or nitrate ranges and are explained in the map at the top left. Grey areas mean that we have no data for this region.

You can switch the map display between water hardness and nitrate content.

All displayed values originate from the respective water suppliers.
As some water suppliers not only specify an average value, but also the minimum and maximum values that occurred in the respective recording period, you can switch the parameter range via a pull-down menu. When displaying the average values, we have calculated an average value between the minimum and maximum if no average value was specified by the water supplier.
For the minimum and maximum values, we always used the average value if this was the only value specified.

The database is constantly being expanded and regularly updated. You can find more information on this on the page Data.