1. International Water Management Institute, Sri Lanka, 127 Sunil Mawatha, Pelawatte, Sri Lanka
2. Institute of Public Health and Environmental Engineering, University of Leeds, Leeds LS2 9JT, UK
3. NGO Forum for Public Health, 4/6, Block-E, Lalmatia, Dhaka 1207, Bangladesh
4. Department of Chemical Engineering, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh
5. BRAC, BRAC Centre, 75 Mohakhali, Dhaka 1212, Bangladesh
6. Departamento de Ingeniería Civil, Universidad Nacional de Colombia, Campus La Nubia, Manizales, Colombia