EVALUASI DAN PERENCANAAN PENGEMBANGAN JARINGAN PIPA AIR BERSIH DI KECAMATAN NGANTANG KABUPATEN MALANG

Ngantang Subdistrict with a population of 51,876 people, with 1119 housing connections served by Perumda Tirta Kanjuruhan Ngantang Unit. It can be said that the number of residents of Ngantang District who are served by clean water by Perumda is still very low, because if you look at the percentage of the population served in Ngantang District, it is only 10.79% of the total population in Ngantang District. Therefore, it is necessary to solve the problem so that the needs of raw water and drinking water for the residents of Ngantang District can be met equally. From the calculation of domestic existing water needs in 2021 of 5,828m3 / hr and the non-domestic sector of 0.874 m3 / hr. In the development plan in 2032, domestic needs are 9.67 m3 / day. Meanwhile, the non-domestic sector in 2032 will be 1,452 m3 / day. And it increases to 16,025 liters/second at the maximum need per day. At peak hours it was obtained 20.903 liters/second. So with the calculation of clean water needs in 2032, it can be distributed with a service level of 16.35%. Planning for the development of clean water pipelines in 2032 requires the addition of pipelines from the existing condition of 239 pipes to 471 pipes, the addition of nodes from 221 to 464 nodes, and the addition of valves from 4 to 16 Gate Valve type valves. The addition of pipes used hdpe pipe type with diameters of 25 mm, 32 mm, 50 mm, 63 mm, 90 mm, 140 mm, 160 mm, 225 mm