<![CDATA[Jamali Village, experiences dry-season water scarcity that affects household water availability. This study assesses the potential of household-scale rainwater harvesting (RWH) as a supplementary domestic water source during the dry season. The analysis was conducted by estimating household water demand, evaluating rainfall availability, calculating roof catchment potential, and determining the required storage capacity and implementation cost. Rainfall data from 2015 to 2024 were obtained from NASA POWER and analyzed using the reliable rainfall approach. The household water demand was estimated at 100 liters/person/day, with an assumed four occupants per house, resulting in a daily demand of 400 liters/household. The catchment area was based on a representative roof area of 96 m². The results show that a household-scale RWH system with a 1 m³ storage tank can contribute to domestic water supply, but its performance varies seasonally. During the dry season, particularly from June to August, the system can meet approximately 16.87% of household water demand, while the remaining 83.13% must be supplied from other water sources. The estimated cost of installing the RWH system is IDR 2,701,274 per household. These findings indicate that RWH cannot fully replace existing water sources during the dry season, but it can serve as a supplementary strategy to reduce dependence on external water supplies in drought-prone areas. This study contributes to sustainable water resource management by providing empirical evidence on the technical and economic feasibility of household-scale RWH and offering practical insights for climate-resilient, decentralized water supply planning in rural communities.]]>
Copyrights © 2026
