1. Department Sanitation, Water and Solid Waste for Development, Eawag – Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, 8600 Dübendorf, Switzerland
2. Nadel Center for Development and Cooperation, ETH Zürich, Clausiusstrasse 37, 8092 Zürich, Switzerland
3. Infectious Disease Division, Environmental Interventions Unit, icddr,b, 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka 1212, Bangladesh
4. African Population and Health Research Center, PO Box 10787-00100, Nairobi, Kenya
5. Regional Centre of Energy and Environmental Sustainability (RCEES), Civil and Environmental Engineering Department, School of Engineering, University of Energy and Natural Resources (UENR), PO Box 214, Sunyani, Ghana
6. Civil Engineering Department, College of Engineering, KNUST, Kumasi, Ghana
7. Department of Environmental Health & Sanitation, College of Agriculture Education, University of Education, Winneba, Box m40, Asante-Mampong, Ashanti, Ghana