Prof. Wim van Vierssen, PhD is CEO of KWR Watercycle Research Institute, the research institute of the Dutch Drinking Water Utilities. He is a biologist with a focus on (marine, brackish and fresh) water management. He obtained his PhD from what is now the Radboud University in Nijmegen. In 1987 he became full professor in Aquatic Ecology at the International Institute for Hydraulic and Environmental Engineering (IHE) in Delft, where he developed and supervised an international MSc and PhD programme for participants from a wide range of developing countries. In 1992 he became Director of NIOO (Netherlands Institute of Ecology), a research institute of the Royal Netherlands Academy of Arts and Sciences (KNAW). In 1998 he became Rector at the IHE. He served on the Board of Governors of the World Water Council (Marseille) and was Managing Director of the Environmental Sciences Group of Wageningen University and Research Centre from 2002-2007. He occupies a professorial chair ar Delft University of Technology on Science System Assessment of water-related research. Nationally, he was involved in developing and supervising major national research initiatives, amongst others as chairman of the national programme Climate Changes Spatial Planning. Currently he is a member of the High Level Steering Group of the European Innovation Partnership on Water and member/vice-president of the European Water Platform WssTP board representing the research community.