1. Department of Civil & Environmental Engineering, Stanford University, Stanford, California 94305, United States
2. Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
3. Department of Civil & Environmental Engineering, Rice University, and Rice Water Institute, Houston, Texas 77005, United States
4. Environmental Science and Engineering Program, Biological and Environmental Sciences and Engineering Division (BESE), KAUST, Thuwal 23955-6900, Saudi Arabia