Preyan Arumugam is a Biological Scientist with a PhD in Chemical Engineering from the University of KwaZulu-Natal (UKZN). She is currently employed as a Senior Research Scientist at the Water Sanitation and Hygiene Research and Development (WASH R&D) Centre at UKZN. Her research interests include alternative, next-generation sanitation technologies such as decentralised approaches (DEWATS) and non-sewered sanitation systems (NSSS). Her focus areas are design and performance evaluation of DEWATS and constructed wetlands, and test method modification for
NSSS.

She is currently leading a project funded by the South African Water Research Commission SASTEP to coordinate a mark scheme for SANS 30500 in South Africa, which is identically adopted to ISO 30500. She provides CPD accredited training of all of the relevant sanitation standards in South Africa including ISO/SANS 30500, ISO 31800 and ISO/SANS 24521 through the Water Institute of Southern Africa (WISA). She is a working group member of ISO PC 305 and SABS TC 0138, for ISO 30500 and SANS 30500 respectively. Currently, she is working on the local adoption of ISO 31800 as well as a potential new standard for wastewater sludge treatment units. Moreover, Preyan is drafting a business proposal to develop a formal Testing Centre at UKZN for next-generation innovative sanitation technologies in Africa.

Ms Chan Mei Yee is a Senior Programme Manager at TÜV SÜD with 8 years of experience ISO standards development, testing and certification for non-sewered sanitation systems. Prior to that, she was with the World Toilet Organization, spearheading their sanitation projects in China and Cambodia. She is passionate about driving corporate social responsibility and sustainability and has spent more than 19 years in various fields working internationally across teams and cultural boundaries. As the Green Ambassador of TÜV SÜD, her focus in Singapore is helping companies on their green transition through GHG verification and validation. She holds a Masters in Community Water and Sanitation and a Science Degree in Earth Science, majoring in geology and physical geography.

Dr Jeremy Kohlitz is Water, Sanitation and Hygiene (WASH) researcher with special interest in climate change and WASH service delivery. He specialises in applied and transdisciplinary research on WASH in low- and middle-income countries in the Asia-Pacific region.

Dr. Tatchai Pussayanavin serves as an Associate Professor in the Environmental Science program at Ramkhamhaeng University and holds a position as a visiting lecturer at the Asian Institute of Technology. Dr. Tatchai has extensive experience in project management, notably contributing to the Project of Knowledge and Innovation Support for ADB’s Water Financing Program in Cambodia and Thailand.

Additionally, he plays a crucial role as a senior researcher in a Bill & Melinda Gates Foundation (BMGF) and UNIEF project focused on sustainable decentralized wastewater management and climate-smart WASH technologies. In this capacity, he leads a team dedicated to optimizing decentralized wastewater infrastructure in collaboration with the University of Glasgow. Dr. Tatchai is actively involved in capacity-building efforts and provides support for the ongoing waste-to-wealth project. His commitment extends to assisting the Maldives Institute of Technology (MIT) and collaborating with Maldivian professionals on the MEERY Project. Through these initiatives, he ensures the sustainable delivery of project objectives while facilitating MIT's efforts to promote waste-to-wealth interventions across the Maldives. With over 20 paper publications in the field of environmental technologies, Dr. Tatchai is also a co-author of the book titled “Local Agility to Global Challenges.” This publication explores solutions to marine plastics issues from diverse subject areas and perspectives, showcasing his comprehensive expertise in the environmental sciences.