Court of Justice (Second Chamber) 20 December 2017, C-664/15 (Protect Natur-, Arten- und Landschaftsschutz Umweltorganisation v Bezirkshauptmannschaft Gmünd.)

JUDGMENT OF THE COURT (Second Chamber) 20 December 2017 ( *1 ) (Reference for a preliminary ruling — Environment — Directive 2000/60/EC — EU action in the field of water policy — Article 4(1) and Article 14(1) — Obligations to prevent deterioration of the status of bodies of surface water and encourage the active involvement of all interested parties in the implementation of the directive —