Environmental Ordinance, Water abstraction for human consumption (Water extraction area, Groundwater protection area and Drilling Free Zone)

This stock contains the protection zones for groundwater abstraction for human consumption: the 25- and 100-year zones have been merged into the groundwater protection zones.

In the Boring areas, the protective clay layer must be protected in order to prevent contamination.
Water catchment area: depict the areas with the highest level of protection for groundwater in terms of regulations for water abstraction.