The Hygiene Promotion, Sanitation & Safe Water Supply Project (HYSAWA), implemented by Trinamul Unnayan Sangstha (TUS) with support from DANIDA and the Government of Bangladesh, was carried out from October 2009 to December 2010 across 100 villages in Khagrachari Sadar and Mohalchari Upazilas. With a budget of Tk 24,96,373, the project aimed to improve community health through better hygiene, sanitation, and safe water practices. TUS formed and trained community-based organizations, local leaders, and Union WatSan Committees to promote behavioural change and strengthen local capacity. Awareness campaigns, courtyard meetings, and advocacy training encouraged community action on sanitation and water issues. Additionally, 62 tube-wells, ring-wells, and water pumps were installed in 52 villages, providing over 550 families with access to safe drinking water. Through these interventions, HYSAWA significantly improved hygiene awareness, leadership participation, and access to safe water and sanitation in the Chittagong Hill Tracts.