Optimum Use of Rainwater Harvesting Case Study: An Indonesian Fivestar-Hotel

Abstract

The global problem faced in recent years is limited water resources due to increasing demand, seasonal rainfall, and depletion of groundwater reserves, leading to water scarcity. The purpose of this study focuses on the application of rainwater harvesting in a five-star hotel in East Jakarta, namely, to determine the characteristics of rainwater quality from the roof and walls, determine the water savings obtained, and the estimated benefits of implementing a rainwater harvesting system. Water savings obtained from the implementation of rainwater harvesting in this hotel reached 11.01% per year with the required investment and installation costs of Rp. 105.27 million.