Professor, Christian Medical College, Vellore

Professor new sanitation, Wageningen University

Professor of Environmental Health, Emory University

INSTITUTO DE INGENIERIA, UNIVERSIDAD NACIONAL AUTONOMA DE MEXICO

Professor, University of North Carolina at Chapel Hill & University of Manchester

Eawag/Sandec, Switzerland & Swedish University of Agricultural Sciences (SLU)

Samuel L. and Julia M. Flom Professor & State of Florida 21st Century World Class Scholar

Professor of Sanitary Engineering @ IHE Delft and TU Delft

Professor of Civil and Environmental Engineering

Indian Institute of Technology Madras