Jan Leentvaar is currently Senior Advisor at UN-Water Decade Programme on Capacity Development in Bonn, seconded by the Netherlands government. He is also Professor of Environmental Policy Making at UNESCO-IHE in Delft and the Agricultural University Wageningen, The Netherlands. He has served the Netherlands Ministry of Transport, Public Works and Water Management since 1988 in his last position as Director Chief Inspector of the Water Management Inspectorate and Advisor of the Minister.
He has extensive professional experience in Integrated Water Resources Management obtained during his professional career. He was part-time professor Integrated Water Resources Management at Wageningen University, Director of Water Pollution Control and International Relations and Director of Research at RIZA, the Dutch Institute for Inland Water Management and Water Pollution Control and head of the Delta Department at the Institute for Tidal Water Management.
He was chairman and member of several working groups of the international Rhine and Meuse Committees, Netherlands representative in the International Committee on the Hydrology of the Rhine and member in several UNESCO working groups.
He carried out several projects in Institutional and Water Quality Management in India, Malaysia, Egypt, Hungary, Slovakia, Ukraine and Russia.