Indonesia’s waste management strategy promotes sustainable management and effective use of natural resources, as do many others. Due to a shortage of final processing sites (FPSs), ineffective solid waste management, and low environmental awareness, delivering information on ecologically friendly waste management has been difficult. Therefore, this research aims to locate typical landfills in highly populated metropolitan regions, explore solid waste management difficulties, and suggest feasible solutions. Sleman Regency, Province of the Special Region of Yogyakarta, was our focus while choosing an FPS location and assessing socioeconomic factors. We filter and classify quantitative and qualitative data from maps, observations, interviews, and document searches before using them in our mixed-methods approach. This study used sociolegal-spatial methods to improve waste management. The results show that geographical accuracy and comprehensiveness may be achieved within legal and institutional contexts. Trash reduction can be achieved if provincial, district/city, sub-district, and village administrations are compelled to adopt waste management policies and plans. These findings show that the government cannot accomplish its 2,030 waste elimination goal without systematic and long-term public infrastructure and village home socialisation.