1 School of Civil and Environmental Engineering, 50 Nanyang Ave, Nanyang Technological University, Singapore, 639798. Electronic address: bincao@ntu.edu.sg.
2 School of Civil and Environmental Engineering, Cornell University, Ithaca, NY, USA. Electronic address: aprilgu@cornell.edu.
3 Environmental Science and Engineering, Biological and Environmental Sciences and Engineering Division, King Abdullah University of Science and Technology, Saudi Arabia. Electronic address: peiying.hong@kaust.edu.sa.
4 Epidemiology, Department of Population Medicine and Diagnostic Sciences, Cornell University, USA. Electronic address: ri25@cornell.edu.
5 Department of Civil and Environmental Engineering, University of Connecticut, Storrs, CT, USA, 06269. Electronic address: baikun.li@uconn.edu.
6 Key Lab of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences Beijing, China. Electronic address: ajwang@rcees.ac.cn.
7 School of Civil and Environmental Engineering, Cornell University, Ithaca, NY, USA. Electronic address: jw2522@cornell.edu.