Great strides have been made in improving sanitation in many developing countries. Yet, 2.4 billion people worldwide still lack access to adequate sanitation facilities and the poorest and most vulnerable members of society are often not reached and their specific needs are not met. Moreover, sustainability is currently one of the key challenges in CLTS and wider WASH practice, subsuming issues such as behaviour change, equity and inclusion, physical sustainability and sanitation marketing, monitoring and verification, engagement of governments, NGOs and donors, particularly after open defecation free (ODF) status is reached, and more. There have been several useful studies on sustainability that have highlighted some of these different aspects as well as the complexities involved. This book develops these key themes by exploring current experience, practices, challenges, innovations and insights, as well as identifying a future research agenda and gaps in current knowledge.WSSCC’s Elizabeth Wamera, Civil Society and National Engagement Officer’s chapter on post-ODF management process by the community is available for download from the book “Sustainable Sanitation for all: Experiences, challenges and innovations”. The chapter Who is managing the post-ODF process in the community? A case study of Nambale sub-county in Western Kenya, is based on the success of Nambale sub-county, which was declared ODF in 2012, and looks at the role of Community Health Workers (CHWs), discussing challenges that could be threatening ODF achievement and sustainability. As post-ODF follow-up is central to sustaining open defecation free (ODF) status, and needs to be integrated into CLTS programming from the outset, the chapter explores the responsibilities of carrying out these activities, and how they might be motivated and financed. The CLTS Knowledge Hub's newly launched book describes the landscape of the sustainability of Community Led Total Sanitation (CLTS) and sanitation with references to the Sustainable Development Goals (SDGs) and through examples from Africa and Asia. Featured in the book are a range of experiences and innovations from institutions and actors within the WASH sector attempting to make recommendations and practical suggestions for policy and practice for practitioners, funders, policymakers and governments.Sustainable Development Goal Target 6.2 aims, by 2030, to achieve access to adequate and equitable sanitation and hygiene for all and end open defecation (OD), paying special attention to the needs of women and girls and those in vulnerable situations. If we are serious about leaving no one behind, we will need to put human beings first, and infrastructure designed to serve them second. Many individuals and groups cannot use sanitation and hygiene facilities due to physical or societal restrictions placed on them by their gender, disability, age, caste, religion, gender, or poverty. Non-discrimination should be embedded into policy and practice, so that people’s realities, needs, and demands are clearly articulated and matched with budgets, adapted public facilities on the ground, more equitable sharing of water, sanitation, and hygiene (WASH) burdens, and systematic, meaningful participation in decision-making and monitoring. This chapter summarizes the testimonies and aspirations of individuals across a number of Asian countries who were never asked what they need and who are excluded from services. They remind us that in order to leave no one behind we will need to listen to them, involve them fully at all key stages, and forge true partnerships to achieve shared goals.