Photographer: Klaus-Dieter Sonntag

Interviewer: Erich Wittenberg

Wilfried Kraus

Deputy Director General "Sustainability, Climate, Energy"
German Federal Ministry of Education and Research (BMBF)


Dietrich Borchardt

Helmholtz Center for Environmental Research – UFZ, Germany


Alan Jenkins

Centre for Ecology & Hydrology, United Kingdom

Norbert Jardin

Ruhrverband, Germany 



Per Stålnacke

Norwegian Institute for Agricultural and Environmental
Research –

Bai-Mass M. Taal

African Ministerial Conference on Water AMCOW, Nigeria 



Stephen Foster

GW-MATE (Groundwater Management Advidory Team)
Global Water Partnership
& formerly World Bank 2001-10

Rüdiger Heidebrecht

Head of Department Training and International Cooperation,
DWA, Hennef, Germany