Cozzens in Brazil (image) Georgia Institute of Technology Caption As part of her research on water and sanitation in developing countries, Georgia Tech Professor of Public Policy Susan Cozzens recently toured the Guandu Water Treatment Plant in Rio de Janiero, Brazil. It is the largest water treatment plant in the world, serving 8.5 million people. Credit Courtesy of Susan Cozzens Usage Restrictions For Editorial Use Only Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.