Khumbo is a Senior Lecturer in Environmental Sanitation in the Department of Environmental Health at Polytechnic, University of Malawi. He holds a BSc in Civil Engineering obtained from University of Malawi, a Master of Integrated Water Resources Management obtained from University of Dar es Salaam (specializing in Water and Sanitation) and a Master of Business Administration from ESAMI/Maastricht School of Management (MsM). His PhD work is in the field of Environmental Sanitation focusing on development of an intensified decentralised faecal sludge treatment (DEFAST) system for treatment of pit latrine sludge from informal settlements in the cities of Malawi. He has over 15 years’ experience in water and sanitation field in academic, government and NGO settings. He lectures in water and sanitation modules in MSc programmes in the faculties of Applied Sciences and Engineering in the University of Malawi. The content of these modules ranges from technical aspects (designing of water, sanitation and wastewater treatment systems), and economic, environmental and public health considerations; and social aspects (the approaches to reach out and engage the communities) for the systems. He has also carried out formative research, baseline surveys, mid-term evaluations, end-term evaluations, audits and context analyses in water supply, sanitation, hygiene, occupations safety and health, environmental and social impact assessment and climate change. These assignments have been done on behalf of government, NGOs and private institutions.