Topang Village, located in the Meranti Islands Regency with an area of 43.50 km2 and a population of 2,697 people. Topang Village is the only village in Meranti Regency whose territory is on one island. The source of clean water used by the people of Topang Village for drinking and cooking needs is water produced from rain harvesting, but the rainwater harvesting system in Topang Village is…