PERENCANAAN SISTEM PENYEDIAAN AIR MINUM (SPAM) UNTUK MENDUKUNG KAWASAN WISATA SEHAT DI KAPANEWON DLINGO KABUPATEN BANTUL

Abstract

The demand for drinking water continues to rise in line with population growth, including in the hamlets of Maladah, Rejosari, Ngenep, Sendangsari, and Pencitrejo. Although the Oyo River offers a potential source of raw water, its utilization by the local community has not yet been optimized. This study aims to analyze the current state of water services, plan the Dlingo I Unit Drinking Water Supply System (SPAM) network, and calculate the cost estimate (RAB) for the system’s construction. Data collection was conducted through observation, interviews, literature review, and field surveys. Population projections were made using arithmetic, geometric, and exponential methods, and the selected method was determined based on the smallest standard deviation value. Subsequently, a water demand analysis was performed, network modeling was conducted using the QEPANET plugin to obtain elevation and pipe length data, and a hydraulic analysis was performed using EPANET 2.2. The Cost Estimate calculation was based on the 2025 Bantul Regency HSPK, SNI AHSP, and catalog prices. The analysis results indicate that the water demand in 2045 will be 6.85 L/s to serve 2,300 residents, or 70% of the total population of 3,286. The system is planned to use one intake pump and three booster pumps, with a raw water transmission network spanning 505.25 m, a drinking water transmission network of 5,286 m, and a distribution network of 1,761.05 m. Simulation results show network pressures ranging from 3.42 to 120.21 mka and flow velocities ranging from 0.30 to 0.51 m/s. The total estimated budget required is Rp5,233,058,949. The planning of drinking water supply systems (SPAM) aims not only to meet the community's water needs but also to support the prevention of environmentally-related diseases.