Suprayogi, ImamJoleha, JolehaBochari, BochariNurdin, Nurdin2020-12-282020-12-282019-11978-60251349-1-3wahyu sari yenihttps://repository.unri.ac.id/handle/123456789/9889The purpose of this research is the application of rainwater harvesting technology as an alternative to fulfill the needs of clean water small islands in Riau province. Method of approach used for the research of the design of individual household scale in Concong Village Central Concong Sub District Indragiri Hilir as a water quantity containment effort to fulfill the needs of clean water communities in small islands. The main result is to refer to the results that there is a strong correlation between the determination of the number of tanks and the design financing of rain water tank storage harvested by the community. For the design of the tanks with a capacity of 2000 liters it takes two tanks at a cost of Rp 9.703.000, while for the design of the tanks with a capacity of 4000 liters, it takes four tanks at a cost of Rp 14.741.000 Keywords: design, tank storage, rainwater harvesting technology, small island, individual scaleenAir HujanAir BersihArticle