Analysis of surface water utilization for restoration of the groundwater table case study: Dayeuhkolot, Bandung-Soreang groundwater basin

Abstract

Groundwater utilization as a source of clean water for the community increases, both for domestic and non-domestic needs, thus lowering the groundwater table. The Dayeuhkolot area is part of the Bandung-Soreang Groundwater Basin, which has a groundwater table decline resulting from excessive groundwater utilization. The Experimental Station of Groundwater modeled the groundwater condition in 2010-2020 concluded that the groundwater decline for a particular area reaches up to 50 m. This study aims to analyze the potential for groundwater table restoration that can be carried out at the research location by reducing groundwater utilization through the substitution of surface water use. The prospect of surface water that can be utilized can be identified by identifying its quantity and quality for the feasibility of using surface water as a substitute for groundwater utilization to implement the concept of conjunctive use. Groundwater modeling is carried out with a substitution scheme for groundwater utilization with surface water. Modeling results show that the reduction in groundwater utilization positively impacts the restoration of the water table level. Based on the model result, the groundwater level can recover as high as 2.37 m from 2020 conditions.