Peter Emmanuel Cookey has spent over 25 years in the practice and study of water and sanitation management in developing countries at various levels in the public and private sectors, and 18 years teaching core sanitation and environmental health (students and workers) and conducting research, particularly on governance, technology, public health in the cities and coastal areas of the Niger Delta, Nigeria and southern Thailand. He initiated, organized and manage the EarthWatch Conference on Water and Sanitation and the Nigerian Water and Sanitation Forum from 2002 – 2013 when he proceeded for further studies abroad. In 2007-2009, he was a member of the National Technical Committee that developed national Environmental Management System (TC-EMS) for the Standard Organization of Nigeria (SON). From 2007 – 2010, he served as Secretary, Technical Committee of the Iriebe Master Plan Development for Rivers State Government, Rivers State Government, Nigeria and the Sector Leader for Water Resources, Sanitation and Waste Management. During this time, he was also a member of the Greater Port Harcourt Development Master Plan Technical Committee and served as Secretary of the Sub-committees on Water Resources and Waste Management. In addition (2007-2011), he was the Steering Committee Member representing Anglophone African Countries, Water Supply and Sanitation Collaborative Council (WSSCC), administered, Geneva and from 2012-2015 he was re-elected to represent Middle, Northern and West African Countries; and also a pioneer member of the International Standard Development Committee (ISDC) of the Alliance for Water Stewardship (AWS) that developed the global water stewardship standard. From 2009-2012, Peter facilitated and co-chaired the Port Harcourt Urban Water Supply and Sanitation Sector Reforms and the Rivers State Water Supply, Sanitation and Hygiene Policy and Legislation with the Rivers State Ministry of Water Resources and Rural Development, Nigeria. Peter obtained a bachelor in environmental health from the Rivers State College of Health Science and Technology, a higher diploma in physiology and pharmacology and a postgraduate diploma in environmental microbiology from the University of Port Harcourt, Nigeria. In 2003, he got an MSc in environmental management from the Imo State, Nigeria and a double Master of Science degree from the IHE, Delft, Netherlands (Environmental Science with specialization in Environmental Technology for Sustainable Development) and the Asian Institute of Technology, Thailand (Environmental Engineering Management); which led to a PhD in environmental management (2013-2015) in the Prince of Songkla University, Thailand. In 2009, he obtained a Certificate (Governance in Urban Sanitation), United Nations Institute for Training and Research (UNITAR). During 2015-2018, he was a postdoc researcher at the Asian Institute of Technology, Thailand where he worked with Professors Polprasert and Koottatep on the revision of the fourth edition of the IWA published book ‘Organic Waste Recycling, Treatment, Management and Sustainability’ and also co-authored with them the upcoming IWA book ‘Regenerative Sanitation: New Paradigm for Sanitation 4.0’. Peter research interests include lake basin governance and management, public health risks assessment on onsite (decentralized) sanitation, sanitation governance, sanitation for the base-of-the-pyramid and hard-to-reach-areas, etc. He is a recognized reviewer for over 12 journals on Elsevier, Springer, Wiley, MDPI, etc.