Water Purification System (IMAGE) National University of Singapore Caption NUS scientists created a robust, highly efficient and easy to operate water purification system for industrial wastewater. Credit National University of Singapore Usage Restrictions Credit photo accordingly to National University of Singapore License Licensed content 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.