General Background: Drug abuse is a multidimensional public policy problem requiring coordinated preventive action across governmental institutions and community stakeholders. Specific Background: Kelurahan Tenun, Samarinda, implemented the Drug-Free Village Program and community-based interventions involving the subdistrict government, Samarinda National Narcotics Board, anti-drug volunteers, community organizations, and Universitas Widya Gama Mahakam Samarinda. Knowledge Gap: Prior collaborative governance research has largely emphasized formal interorganizational relations, providing limited empirical explanation of community actors’ contributions to decreasing reported cases at the subdistrict level. Aims: This qualitative case study analyzed stakeholder collaboration, institutional roles, and supporting and constraining factors using interviews, observations, document analysis, the Miles–Huberman–Saldaña interactive model, and the Ansell–Gash framework. Results: Multi-stakeholder coordination strengthened education, early detection, community participation, and preventive interventions, while reported cases decreased between 2024 and 2026. Volunteers served as intermediaries between residents and formal institutions, compensating for limited governmental enforcement authority. Nevertheless, low awareness, reporting fears, social stigma, and resource constraints continued to restrict early intervention and rehabilitation. Novelty: The study positions community volunteers and local social capital as central mechanisms connecting formal institutional coordination with neighborhood-level prevention. Implications: Sustained engagement, clearer role allocation, stronger volunteer capacity, and stigma-sensitive reporting mechanisms are required to maintain prevention outcomes and reinforce community resilience. Highlights: Reported incidents decreased between 2024 and 2026 under coordinated local prevention. Volunteer networks connected residents with institutions despite limited subdistrict authority. Stigma, reporting fears, and resource shortages constrained early detection and rehabilitation. Keywords: Collaborative Governance, Drug Abuse Cases, Drug Prevention, Community Participation, National Narcotics Board.
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