Treffer: Sustainable Clean Water Distribution System [Case Study in Landungsari Village, Malang Regency East Java]

As one of the primary natural resources in the universe, water is a fundamental element that must be sufficiently available for living beings. As such a basic element, the presence of water is highly anticipated throughout life. Therefore, the availability of water in life is absolute and non-negotiable. In its utilization, it is essential to employ wise methods to ensure its sustainability and preservation. Similarly, in the study location, the existing potential is utilized to meet daily clean water needs. However, these needs have not been fully met due to the uneven distribution of water resources. This is because the geohydrological conditions of shallow groundwater are uneven, with some areas located in shallow soil layers and others in deeper soil layers, making them inaccessible for direct use by the community. Another issue is the suboptimal mapping and arrangement of the water network. This study aims to enable a more optimal planning of the network layout as expected. BUMDes, as the village government's representative handling this matter, is responsible for enhancing water resilience for the community, particularly regarding clean water. Through this study, BUMDes "Tirto" strives to initiate breakthroughs in planning an effective and efficient network arrangement to improve clean water services for the community. Based on previous studies regarding the groundwater potential at SB.1, the estimated potential is 8.74 lt/s, and at SB.2, it is 7.11 lt/s. Referring to data from the last 10 years and projections up to 2032, the population is estimated to reach 9,574 people. The projected clean water demand by 2032 averages 7.82 lt/s, with a daily maximum of 9.38 lt/s and a peak hour demand of 13.28 lt/s. The groundwater potential at SB.1 and SB.2, based on earlier studies, still meets the demand, even up to the confined zone depth. This indicates that the existing potential can still fulfill the community's needs by 2032. To ensure the sustainability of this potential, its utilization must not be excessive. The analysis results, based on network optimization, recommend the use of pipes with diameters of 4”, 2 ½”, 2”, 1 ½”, 1 ¼”, 1”, ¾”, and ½” for SB.1, and diameters of 4”, 2 ½”, 2”, ¾”, and ½” for SB.2. The analysis also recommends the use of HDPE (High-Density Polyethylene) SDR17 PN10 pipes, considering the available pressure levels. The planned capacity of the required reservoir is 95 m³ at SB.1 and 78 m³ at SB.2. To ensure sustainability, the utilization of groundwater potential should not exceed optimal capacity, and environmental conservation should be implemented by infiltrating rainwater into the ground.