Arsenic in Recharged Aquifers (IMAGE) Washington University in St. Louis Caption In this diagram, Young-Shin Jun, professor of energy, environmental and chemical engineering at the McKelvey School of Engineering, demonstrates how it is that the perfectly potable water used to recharge an aquifer can become contaminated with dangerous levels of arsenic. Credit Jun Lab Usage Restrictions Usage permitted with attribution 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.