Study of rainwater harvesting as a water conservation in mall building in South Tangerang

Abstract Most of the population in Indonesia uses groundwater to meet need for clean water. With rapid growth, there has been an increase conversion open space land into residential, offices, and commercial areas. The increases impervious surface throughout city could impact availability water future. Implementation conservation is needed ensure long term Rainwater harvesting systems are one methods utilize rainwater as alternate source conservation. This study aims calculate volume harvested mall building South Tangerang using EPA-SWMM design a reservoir. result this average 80 m 3 /day from Tangerang. reservoir rectangular with dimensions H 4 × W 18.3 6.5 capacity 476.06 .