1. Center for Global Safe Water, Hubert Department of Global Health, Rollins School of Public Health, Emory University, 1518 Clifton Rd NE, Atlanta, GA 30322, USA and Department of Behavioral Sciences and Health Education, Rollins School of Public Health, Emory University, 1518 Clifton Rd NE, Atlanta, GA, USA
2. Civil Engineering and Environmental Science, University of Oklahoma, Norman, OK, USA and Department of Anthropology, University of Oklahoma, Norman, OK, USA
3. Great Lakes University of Kisumu P.O. Box 2224 – 40100, Kisumu, Kenya
4. Department of Environmental and Global Health, Center for African Studies, University of Florida, Box 100188, 101 S. Newell Dr, Room 2148, Gainesville, FL 32610, USA