Ensuring the highest possible quality of water including maintaining water amount at levels ensuring biological balance, namely: - maintaining water quality at levels no lower than required by applicable laws; - undertaking actions aimed to having water quality at level required by applicable laws if such level is not achieved.

• Act of 27 April 2001, the Environmental Law
  Place of publication: (Dz. U. z 2024 r. poz. 54)

• Underground waters
• Surface water