A riverbank revitalization program is being carried out to overcome the problem of slum areas and restore the role of the river. Many local governments in Indonesia are working to revitalize riverbanks, with Yogyakarta being one of them. As a special region in Indonesia, the Yogyakarta government has implemented the Mundur, Munggah, Madhep Kali (M3K) program, under Government Regulation (PP) No. 38 of 2011, to manage the conservation, development, and control of the destructive power of river water. This study aimed to ascertain how changes to the riverbanks affect both people’s quality of life and the river itself. The factors that influenced the changes in the environment, society, and culture of the community after the M3K program were also determined in this study. This study used a descriptive method with qualitative and quantitative data analyses. The statistical analysis method used was logistic regression. The findings obtained show that the M3K program has transformed people’s mindsets and habits toward keeping the environment clean, particularly the river area. According to the findings of the logistic regression analysis, the variables that determine the changes in the social and cultural environment of the community affected by M3K are age, education, employment opportunities, and income.