This community service activity was carried out as part of the 41st Anniversary of the Catholic University of Santo Thomas Medan under the theme “Clean City Movement of Medan: Strengthening Collaboration to Realize Indonesia Emas 2045.” The primary objective of this program was to foster environmental awareness and strengthen synergy among universities, local communities, and regional governments in maintaining urban cleanliness and environmental sustainability. The implementation employed a participatory approach involving UNIKA’s academic community, local residents, and key stakeholders across seven districts in Medan City. The stages of activity included socialization, environmental clean-up actions, and post-activity evaluation. The results demonstrated an increase in community participation in maintaining environmental cleanliness and the establishment of cross-sector collaborative networks. Furthermore, this activity reinforced the implementation of the Tri Dharma of Higher Education through community engagement and the cultivation of environmental character education.
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