Feasibility study of rainwater conservation and harvesting for industrial community in North Jakarta

Rainwater harvesting has been adopted in many regions of the world when raw water supplies are insufficient for the community. A multinational company engaged in heavy equipment around North Jakarta has a rainwater pool facility that can be used to anticipate flooding during the rainy season using the Ground Catchment System method. In addition, this water source can be used to meet the company's clean water needs both for industrial and domestic needs and to reduce the use of municipal supply water (Perusahaan Daerah Air Minum, PDAM). This study aims to meet the needs of clean water, anticipate floods and droughts. This research uses a problem-solving approach to reduce the use of water from PDAM. The variables studied in this research are average water quantity, water quality, and reduction of water consumption from PDAM by replacing it with clean water from rainwater, and then assess them using qualitative and quantitative method for six months. The results concluded that the quantity of water from rainwater treatment produced during six months of research can reduce the consumption of PDAM water as much as 20%. In general, the rainwater harvesting for the needs of the industrial community in the company can be considered as a feasible solution to provide clean water substitute and to reduce PDAM water consumption.