ANALYSIS CONCERNING CLEAN WATER NEEDS ON MOJOSARI VILLAGE, KECAMATAN MANTUP
In Lamongan Region, especially in areas with high groundwater levels, during the dry season most of the community wells dry up. This causes people to spend more time and energy to meet the needs of clean water. The study was conducted in the village of Mojosari District, Mantup. Mojosari Village is divided into 4 (four) hamlets: Mojoroto, Belud Sarirejo, Sendangsari, and Sidobinangun. To meet the needs of the population in Mojosari Village, it is necessary to plan a clean water distribution system. In term of calculating the clean water needs for households, there are several factors that must be considered: planning period, estimated population in the planning period and population growth rate per year. The data processing phase starts from the calculation of the projected population for the next 10 years, then the projection of the need for clean water is based on the population projection and the amount of the discharge is calculated until the year of projections. Furthermore, water fluctuations were calculated so that daily and hourly debit can be found. From the results of data analysis, the projection of population in 2027 would be 2546 people. The average need for clean water is 107415.3 l / second with a service percentage of 60% with a maximum hour requirement of 160,585.9 liters per day or 1.86 liters per second.