Water quality
The protection of surface waters from pollution is also an important task of the regional water authorities. The management of water quality aims at attaining certain objectives dependent of the function for which the water is used.
An important element of this task is the construction and the operation of purification works which are used for the cleaning of the sewerage water of households and companies. The national government is responsible for the maintenance of the main system of water bodies.
The regional water authorities are legally bound to manage regional and local bodies of water. For this they operate about 360 sewerage purification plants. The legal guidelines for the management of water quality are laid down in the Water Act.