1. Department of Environmental Health and Ecological Sciences, Ifakara Health Institute (IHI), Ifakara, Morogoro, Tanzania
2. Bremen Overseas Research and Development Association (BORDA), Mikocheni Dar es Salaam, Tanzania
3. URBANWaters Consulting, Bremen, Germany
4. Consultant, The World Bank, Dar es Salaam, Tanzania
5. Swiss Tropical and Public Health Institute, Basel, Switzerland
6. University of Basel, Basel, Switzerland
7. School of Civil Engineering, The University of Sydney, Darlington, New South Wales, Australia