Greg Leslie is Director of the UNSW Global Water Institute, a multidisciplinary institute focused on marine, freshwater and urban water systems, and a professor in the School of Chemical Engineering at UNSW Sydney. He specialises in systems analysis for water and wastewater treatment processes in municipal, industrial, and agricultural applications.

Prior to joining UNSW, Greg worked in the public and private sector on water treatment, reuse and desalination projects in Australia, New Zealand, Singapore, Hong Kong, and the US. His experience includes the NEWater recycling project for the Singapore Public Utilities Board.

Greg has served on the Desalination Guidelines Technical Committee for the World Health Organisation and the Water Issue Committee for the National Health and Medical Research Council.