Hannes Schritt hold a presentation concerning water in Berlin and Virtual Water at the BUNDjugend German-Egyptian Youth Exchange in Berlin. As part of the presentation he explained the water cycle of Berlin: Treated waste water is reused as drinking water to ensure water availability. In addition, Berlin gets drinking water by river bank filtration from Havel, Spree and Dahme. As a result of both, Berlin's drinking water quality depends on good water quality of the effluent of the waste water treatment plants and the rivers crossing the city. After presenting primarily technical aspects Hannes Schritt talked about political conflicts and inititiatives concerning water in Berlin and the concept of Virtual Water. The presentation slides are available for download.

After the presentation there was a fruitful discussion about water in Berlin and the concept of Virtual Water.