The Contribution of Community Social Capital in Resolving the Environment: Case Study in Regional Landfill Area of Piyungan, Yogyakarta, Indonesia

 Domestic waste has been a major problem faced by Indonesia since time immemorial. One of the significant ways to deal with this problem is to implement a system and build an integrated waste management facility. The regional landfill area of Piyungan, Yogyakarta, Indonesia, a waste disposal site covering Sleman and Bantul regencies, and Yogyakarta City still experiences complicated problems with this management process. At the landfill, waste management is reduced by the local community through social capital, namely "Mardiko.” Therefore, this study aims to determine the role of social capital in managing the regional landfill area of Piyungan. This is a quantitative and qualitative research with data collected from 200 respondents comprising government officials, community leaders, groups, and community members using the purposive random sampling method. The results showed that the stronger the role of social capital in the community, the better the efforts to serve the environment and the lesser the amount of waste disposed of as residue in the Piyungan regional landfill area. In conclusion, the social capital conducted by the community plays a significant role in managing the environment and reduces waste by 20%.