David is Managing Director of Envisager, a strategic consultancy advising governments, multilateral institutions, financiers and companies on water and wastewater market, policy, regulatory, environmental and management, following the water sector for 24 years, previously at BNP Paribas and Ecofin Limited. He is a member of the Advisory Board for the Pictet Funds Water Fund and XPV Capital’s Water Fund and is advisor to the Board of Bluewater Bio along with being an Ambassador for Pump Aid. He read Environmental Biology at Liverpool and has a DPhil in Applied Ecology from Oxford and is a Chartered Environmentalist (MIEEM, CEnv) and Geographer (FRGS, CGeog).

He has written six books on water finance, markets and management including the ‘Pinsent Masons Water Yearbook’ (13th edition, 2011) along with a monthly column for Global Water Intelligence. ‘The Sound of Thirst: Why urban water for all is essential, achievable and affordable’ was published by Parthian Books in June 2012. Specific areas of expertise include water finance, environmental regulation, the role of the private sector in service provision and corporate strategy.