Dr. Thammarat Koottatep is a Professor of Environmental Engineering Management of the AIT, Thailand. He is an internationally recognized professional on fecal sludge management, sanitation systems, and wastewater treatment technology. His major scholarly contributions include publications of more than 60 refereed international journal papers, 3 books, and 9 book chapters. He has invented sanitation technologies, one of which is patented to his credit and several of which are filing. He has jointly developed a professional master degree program in Regenerative Sanitation and mentored 18 doctoral students. He has secured significant funded projects including research and training grants, and most notably, the Bill & Belinda Gates Foundation grants on “Decentralized Wastewater Management in Developing Countries: Design, Operation and Monitoring”. He has contributed significantly to capacity building in fecal sludge management and decentralized wastewater treatment systems in Thailand and abroad, including capacity strengthening for policy makers.