Conservation Model for Sustainable Groundwater Utilization in Makassar City Muhammad Amri Akbar 1 , Soemarno 2 , Harsuko Riniwati 3 , Andi Tamsil 4 {amriakbar72@gmail.com 1 , smno@ub.ac.id 2 , riniwatisepk@gmail.com 3 , andi.tamsil@umi.ac.id 4 } Universitas Brawijaya, Indonesia 1, 2, 3 Universitas Muslim Indonesia, Indonesia 4 Abstract. Ground water utilization increases along with population growth and city development. Ground water is one of the sources of water to fulfill daily needs for households, government offices, private sectors, businesses and industries. The research was aimed to formulate a conservation model for sustainable groundwater utilization in Makassar City. This research used primary data and used questionnaire techniques for data collection. The data was analyzed by using the AHP (Analytic Hierarchy Process) analysis and the MPE analysis approach (Experimental Comparison Method). The AHP method is intended to determine the priority of sustainable groundwater management strategies in Makassar City. While the MPE method is intended to determine the best model of sustainable groundwater conservation in Makassar City. The results showed that the main strategy in sustainable groundwater management in Makassar City is to increase PAD based on the environment becomes a top priority (49.20%). While the MPE analysis showed that the best model for sustainable groundwater conservation efforts in Makassar City is the conservation model for groundwater used with a combination of scenarios/models 1, 2, 3, 4 and 5 where the efforts include; saving groundwater, making infiltration wells, harvesting rainwater and installing water meters. Keywords: Conservation Model, Sustainable, Groundwater, Makassar City. 1 Introduction Groundwater is water that moves in the soil contained in the spaces between the grains of soil that form it in the cracks of rocks. The level of ground water utilization in Makassar City is currently high, where based on data analysis, the average groundwater uptake in Makassar City was 2,997.30 m 3 /month. This value was high when compared to the maximum amount (volume) permitted which is an average of 2,164.86 m 3 /month. The data showed that the current groundwater utilization rate was 174.51% or has exceeded the maximum permitted limit. This is also reinforced by the fact according to the Makassar City Regional Environment Agency (BLHD) that there was a decrease in groundwater level of 0-3.25 m/year in one of the districts in Makassar due to uncontrolled use of ground water. Ground water utilization increases with population growth and the city development. This is because ground water is one source of water to fulfill daily needs, both for households, government offices to businesses, businesses and industries. Ground water is water that contained in layers of soil or rocks below the surface of the land which also has a very important role, especially in maintaining the balance and availability of raw water for domestic and industrial purposes. IISS 2019, October 23-31, Malang, Indonesia Copyright © 2020 EAI DOI 10.4108/eai.23-10-2019.2293028