Thus, DKV joins the significant number of institutions and companies supporting this fair, which is dedicated to "Sustainable Water and Development" and is to be held in the capital of Aragón from 14 June to 14 September. The Zaragoza Universal Exhibit is divided into three sub-themes: "Water, sole resource", "Water for life" and "The landscapes of water". We must add a fourth related topic to these, since knowledge is sufficient to deal with issues affecting the group as a whole: Thirst, the driving force behind development.