Ronnie Mckenzie is the Chair of the IWA Specialist Group on Water Loss. He is MD of WRP Pty Ltd, a South African based consultancy employing around 50 personnel, which specialises in Water Loss Management and Water Resource Planning which he established with two colleagues in 1998. He is a fellow of the International Water Association and the South African Institute of Civil Engineering and received the inaugural Ministerial Award for services to South Africa in the field of Water Demand Management.