PERENCANAAN PENGEMBANGAN SISTEM DISTRIBUSI AIR BERSIH DI DESA BEBIDAS, KECAMATAN WANASABA, KABUPATEN LOMBOK TIMUR, NUSA TENGGARA BARAT

Clean water is important in the lives of rural communities, one of which is Bebidas Village. It has been observed that four hamlets in Bebidas Village do not have a distribution system because their geographical location is higher than that of the previously used water sources. These hamlets include Jurang Koak, Burnei, Dasat Erot, and Tanak Betian. Therefore, it is necessary to develop a clean water distribution system so that the need for clean water in Bebidas Village can be met. The distribution system in Bebidas Village is planned to use a gravity system designed with the EPANET 2.2 application. The projected population growth is calculated using arithmetic and geometric methods to determine the projected need for water. In 2028, the population are 728 for Jurang Koak, 1037 for Tanak Betian, 520 for Burnei, and 1079 for Dasan Erot. The total need for clean water in 2028 is 3.76 liters/second, while the availability of water from the Bawak Pusuk, Sebau, and Sanggah springs reaches 6 liters/second, so it can be concluded that the need for water for these four hamlets until 2028 is met. The plan to develop a water distribution network uses three reservoirs, namely Reservoir 1 dimensions 4.66m x 2.33m x 3.3m for Dasan Erot, while Reservoir 2 dimensions 6.78m x 3.39m x 3.3m for Burnei and Jurang Koak. Reservoir 3 dimensions 4.56m x 2.28m x 3.3m for Tanak Betiant. The distribution uses PVC pipes with a diameter of 5” and 4” for Dasan Erot, 3”, 4”, 5” for Burnei and Jurang Koak, and 3” for Tanak Betian.