Urbanization is a defining process and characteristic of South Asia. Consequently, this is leading to acquisition of diverse water sources and iniquitous water uses by different users. This process of changing peri-urban landscape impacts the water security for the poor women and men. The concern largely emanates from increased water stress for the poor and vulnerable populations, further accentuated by climate change impacts that are expected to alter water availability patterns in the future. The ‘Water Security in Peri-Urban South Asia: Adapting to Climate Change and Urbanization’ Project seeks to understand these implications for residents in four peri urban locations in three South