Over almost a decade of publishing on water governance, policy, and practice, and on the learning that supports them, World Water Policy (WWP) Journal has been growing under the inspirational motivation of our authors for leadership thinking and innovative practices. WWP has opened its doors to younger water professionals and academics, inviting them to publish their ideas, project impacts, and visions for the future of water problems and tangible solutions. So far, we have published 140 articles, discussion papers, and editorial pieces from Asia, Africa, Europe, the Americas, and the Pacific.In 2023, WWP steps up to publishing four issues per year. This is our first Special Issue and one of two Special Issues we will publish in 2023. This Special Issue is dedicated to water security in South Asia, and it brings conclusions and recommendations from two relevant programs that are presented in the first and second of three parts of this issue. The choice is justified by several factors, as follows.Over the past two decades, there has been tremendous growth and development in Asia. However, despite these achievements, the region is center stage in experiencing water insecurity. Countries in the region are beginning to experience moderate-to-severe water shortages, brought about by the simultaneous effects of population growth, rapid urbanization, and progress in agriculture and industrial development (Asthana, 2017). Asia is also the most disaster-affected region in the world, requiring efforts to address risks from climate change, water-related disasters, health emergencies, and economic shock (Asia Development Bank, 2023).South Asia is home to 1.7 billion people (approximately 25% of the world's population), and hosts nearly half of the world's poor. The growing population, coupled with wasteful consumption, has led to a gradual decline in per-capita availability of water in the region by almost 80% since the 1950s (Asthana, 2017). South Asia lags in improved water supply and access to sanitation. Asia, and South Asia in particular, is challenged by the impact of rapid urbanization. Cities in South Asia, such as Chennai, are exploiting the water resources of the rural hinterlands in their vicinity, leading to conflict, and competing claims over the right to this resource. Concerns about Municipal sewage are a common concern, and open defecation remains high in South Asia. The region also is highly dependent on irrigation, as water is directly linked to crop yields and therefore to the production of food, which employs more than 50% of the population. Increased production and food security are key drivers of poverty reduction in the region, but this is highly dependent on the availability of fresh water.The frequency of extreme floods and the scope of flood-prone areas are increasing, particularly in India, Pakistan, and Bangladesh. The impacts of climate change are already being felt in the region. Climate change impacts on the Himalayan and Hindu Kush glaciers directly affect Afghanistan, Bangladesh, Bhutan, Indi...