1. Regional Water and Environmental Sanitation Centre-Kumasi (RWESCK), World Bank African Centre of Excellence (ACE). Department of Civil Engineering, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ashanti Region, Ghana
2. College of Health-Yamfo, Department of Community Health, Ministry of Health, Health Training Institution (MOH-HTI), Sunyani-Yamfo, Ghana
3. College of Health-Yamfo, Department of Physician Assistantship, Ministry of Health, Health Training Institution (MOH-HTI), Sunyani-Yamfo, Ghana
4. Centre of Environmental Health and Safety, Faculty of Health Sciences, Universiti Teknologi MARA, Selangor, Malaysia
5. Department of Environmental Health, College of Health and Medical Sciences, Dilla University, Addis Ababa, Ethiopia