Case C-206/08: Judgment of the Court (Third Chamber) of 10 September 2009 (Reference for a preliminary ruling from the Thüringer Oberlandesgericht (Germany)) — Wasser- und Abwasserzweckverband Gotha und Landkreisgemeinden (WAZV Gotha) v Eurawasser Aufbereitungs- und Entsorgungsgesellschaft mbH (Procurement procedures of entities operating in the water, energy, transport and postal services sectors — Public service for the distribution of drinking water and the treatment of sewage — Service concession — Definition — Transfer to the supplier of the risk connected with operating the service in question)