DBPRF brings together researchers, programme specialists and field professionals with decades of experience across sanitation, public health, gender and social development.
Kumar Dilip is the President of Sulabh International Social Service Organisation — one of India's largest and most pioneering organisations working in sanitation, public health and social development. Founded by Padma Vibhushan Dr. Bindeshwar Pathak, Sulabh has spent over five decades transforming lives through innovation in sanitation, social justice and human dignity.
As President, Kumar Dilip provides strategic leadership across Sulabh's programmes in sanitation, public health, skill development, food security and community empowerment. He has championed an integrated development approach linking WASH, nutrition, gender equality and environmental sustainability. In recognition of his leadership and contribution to sustainable waste management, he was conferred the Global Excellence Award for Leadership in Sustainable Waste Management on 1 July 2026 at the 6th World Waste-to-Wealth Summit & Expo in New Delhi.
Under his leadership, Sulabh hosted the World Toilet Summit in New Delhi in 2025, bringing together global leaders and policymakers on the future of sanitation. He has expanded Sulabh's international partnerships across Nepal, Sri Lanka, South Africa, Kenya, Ethiopia and Ghana, and actively engages with the World Bank and the Gates Foundation on scalable sanitation solutions.
Through his leadership, Kumar Dilip continues to advance Sulabh's founding vision — a cleaner, healthier and more equitable world where dignity and development are accessible to all.
Dr. Nirod Baran Mazumdar is an international waste management expert with over three and a half decades of experience in waste management and on-site sanitation across the world. He currently serves as Honorary Chairman of the International Academy of Environmental Sanitation and Public Health, New Delhi, and previously served as Honorary Director General of Sulabh International Social Service Organisation (SISSO).
He retired from HUDCO in 2005 as Head of the Waste Management Cell and Chief of Projects, and went on to serve as Chief Technical Officer of IL&FS Environmental Infrastructure & Services Ltd. (2005–2016), overseeing design, construction and operation of major composting, waste-to-energy, landfilling and construction & demolition (C&D) waste management projects across India. He played a central role in developing India's first C&D waste management systems and in shaping IS 383 and the C&D Waste Rules, 2016.
He has worked as a consultant to the World Health Organization, the Asian Development Bank, the Institute of Global Environmental Sustainability (Japan), Rotary International, GIZ and ICLEI, across countries including Nepal, Bangladesh, Sri Lanka, Thailand, Indonesia, China, Argentina, Bolivia and Paraguay.
Dr. Sutirtha Sahariah is a researcher, policy communicator and development strategist with expertise in AI governance, gender justice, modern slavery and international development. He holds a PhD in International Development from the University of Portsmouth and an MSc in Media Management from the University of Stirling. He is an Honorary Research Fellow at the University of Portsmouth and serves as Senior Vice President and Head of Communications at Sulabh International. He has authored Sex Work, Labour and Empowerment and his work has appeared in The Guardian, BBC and the World Economic Forum.
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Dr. Bobby Luthra Sinha is a Social Anthropologist and Political Scientist serving as Senior Research Fellow at DBPRF. An independent scholar, author, documentary filmmaker and digital archivist, her work focuses on vulnerable and marginalised communities — including tribal and forest-dwelling peoples — with emphasis on identity, migration, environmental justice, and spiritual, cultural and ecological rights. Her research spans diaspora and migration, gender studies, public health, MHM and WASH, social movements, food security and ethnographic methodologies across Asia, Africa and Latin America. She holds a PhD from the University of Basel, Switzerland (2017) and completed a postdoctoral fellowship at the University of KwaZulu-Natal, South Africa (2019). She is a Core Committee Member of the Scientific Commission on Migration at the International Union of Anthropological and Ethnological Sciences (IUAES).
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Professor Tamsin Bradley is an applied social anthropologist and Co-Director of the Centre for the Advancement of Equality Gender and Inclusion Studies (AEGIS) at the University of Portsmouth. Her research focuses on ending violence against women and girls, harmful cultural practices, gender-based violence, women's rights, religion and gender, and social inclusion. She has published four monographs including Global Perspectives on Violence against Girls (2020, Routledge) and has received funding from the ESRC, AHRC and British Academy. She holds a PhD in Social Anthropology from SOAS, University of London.
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Dr. Devendra Prakash Saroj is Associate Professor and Head of the Centre for Environmental Health and Engineering at the University of Surrey, United Kingdom. His research focuses on water and wastewater treatment, water-energy-environment nexus, resource recovery and environmental engineering. He holds a BTech in Civil Engineering from the Indian Institute of Technology Roorkee (2002), an MTech in Environmental Engineering from the Indian Institute of Technology Kanpur (2004) and a PhD in Environmental Engineering from the University of Trento, Italy (2007). He has published more than 83 research outputs. His expertise in non-sewered sanitation, decentralised wastewater treatment and resource recovery aligns directly with DBPRF's flagship research themes.
Know moreOur programme and field team brings operational expertise, community knowledge and implementation experience to DBPRF's research activities across India.
Deepali Bhattacharya has over three decades of experience in the Indian development sector. She holds an MPhil from Jawaharlal Nehru University and has worked as a gender trainer and programme evaluator across organisations including ActionAid International, CRY, ChildFund International and Action Against Hunger India. She was invited as a panellist at the Berlin Human Rights Film Festival in 2022, where she spoke on food sovereignty and traditional food practices of women in the Global South. She currently consults with Sulabh International and SEEDS.
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Sanjay Suman is a public health and development professional with over 20 years of experience across India, including Bihar, Jharkhand, Maharashtra, Gujarat and the North-East. He holds an MPhil in Social Work and an MSc in Anthropology from the University of Delhi, with advanced certifications from the Humanitarian Academy at Harvard University, the London School of Hygiene and Tropical Medicine, the World Health Organization and IIPH Gandhinagar. He has held senior roles at the Piramal Foundation, CARE India, Global Health Strategies, Oxfam India and CRY. His core expertise spans public health, health advocacy and communication, child rights and disaster risk reduction.
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