This thorough analysis focuses on methods for choosing landfill sites in Iraq's Kurdistan Region, with a focus on the cities of Halabja and Koya in particular. The research investigates the concrete effects of present landfilling procedures by integrating Geospatial Information Systems (GIS) to illustrate the condition of garbage disposal and the corresponding environmental implications. This review aims to provide a thorough analysis and promote debate on the creation of sustainable waste management plans, the significance of using GIS in decision-making, and the requirement for creative solutions to enhance public health, environmental sustainability, and resource recovery in the Kurdistan Region of Iraq. The research underscores the importance of increased cooperation between relevant groups and institutions to enhance efficient waste handling. It also proposes potential directions for future exploration, such as more comprehensive inquiries into the effects of various weight allocation methods in AHP, SAW, and WLC procedures, as well as the possibility of advanced GIS technologies and alternative decision-making techniques to enhance the decision-making process.