PERENCANAAN JARINGAN DISTRIBUSI AIR BERSIH DAN SISTEM DRAINASE DI PERUMAHAN GRAND ALEENA MERJOSARI KOTA MALANG

Clean water is a vital basic need for every individual, including those in the community of Merjosari Village, where the Grand Aleena housing complex is located. In the city of Malang, flooding problems still frequently occur due to the decrease in water absorption areas caused by rapid residential development. This housing area of approximately 2.7 hectares consists of 225 residential units of various types that require a clean water distribution network system capable of delivering water evenly throughout the area, as well as a reliable drainage system to anticipate the potential for puddles or flooding. The analysis results show that the domestic clean water requirement reaches 1.30 liters per second, while the non-domestic water requirement is 0.05 liters per second. The total maximum daily clean water requirement is recorded at 1.87 liters per second. After considering water loss of 0.27 liters per second, during peak hours, the water requirement increases to 2.44 liters per second. With clean water calculations, water can be distributed entirely through pipes with diameters of 2.5 inches, 2 inches, 1.5 inches, 1.25 inches, and 1 inch. In planning the drainage system, a return period of 2 years is used, resulting in a rainfall discharge of 0.842 m³/s and a wastewater discharge of 0.0197 m³/s. The drainage channels are designed using the U-Ditch type with dimension variations of 30 x 30 cm, 30 x 50 cm, and 50 x 70 cm, which can effectively accommodate the total discharge. This plan is expected to support the feasibility of a healthy, safe, and sustainable living environment for the residents of Grand Aleena housing.