1. a CWIS TA Hub Africa, Senegal BP 5941, Dakar, Senegal
2. b Department of Health Behavior, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, 135 Dauer Drive, 302 Rosenau Hall, CB #7440, Chapel Hill, NC 27599, USA
3. c Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, 135 Dauer Drive, CB#7431, Chapel Hill, NC 27599, USA
4. d Africa Development Bank, Africa Water Facility, BP 1387 Abidjan 01, Côte d'Ivoire
5. e Guma Valley Water Company, Guma Building, 12/14 Lamina Sankoh Street, Freetown, Sierra Leone