Luuk is professor Urban Water Cycle Technology at TU Delft. After finalising his studies Civil Engineering at Delft University of Technology in 1987, he worked until 1987 as Assistant and later as Associate expert for the Dutch Directorate General for International Co-operation in Mozambique. In that period he was employed as lecturer/researcher Sanitary Engineering at the Eduardo Mondlane University, Maputo, Mozambique. In the period 1991 until 1994 he worked at the Management Centre for International Co-operation, Delft University of Technology. From 1994 he has been working at the Department of Water Management, section Sanitary Engineering of Delft University of Technology. In 2005 Luuk Rietveld defended his PhD thesis entitled “Improving Operation of Drinking Water Treatment through Modelling”.