Rupantar is germinated at south-west coastal belt adjacent of world’s largest mangrove the Shundarban with the mandate of environmental sustainability. Moreover, these larger communities are in vulnerable situation due to rapid change of climates. Frequent and several forms of disasters destroy the sanitation structures. Furthermore, the communities have also less attention on this issue due to engage in fulfilling more fundamental needs. Scarcity of safe drinking water is one of the vital issues of these coastal belt communities. Considering these Rupantar has indented to operating projects in the reporting period in Koyra and Dacope Upazila at Khulna district, Assasuni Upazila at Satkhira district and Shamnagar Upazila at Satkhira district focusing WASH and climate change.