1. Department of Civil, Environmental and Geomatic Engineering, Institute of Environmental Engineering, ETH Zurich, 8093 Zurich, Switzerland
2. Department Water Resources and Drinking Water, Swiss Federal Institute of Aquatic Science and Technology, Eawag, 8600 Dübendorf, Switzerland
3. Department of Chemical and Biological Engineering (CBE), Princeton University, Princeton, NJ 08540
4. Department of Civil and Environmental Engineering (CEE) and High Meadows Environmental Institute (HMEI), Princeton University, Princeton, NJ 08544