<![CDATA[Waste management remains one of Indonesia’s most pressing environmental challenges, as population growth increases waste generation and places pressure on limited institutional and financial capacities. Although community-based waste management initiatives, including waste banks, have been widely implemented, they frequently encounter structural and participatory constraints. This study examines an alternative waste-reduction model through the Sahabat Pilah Sampah Bumi Meranti (SAPA BUMI) movement, with particular attention to its strategies, challenges, and contributions to environmental justice. Using descriptive qualitative design and netnographic methods, the study drew on digital observations, interviews, and documentation of SAPA BUMI activities. The findings indicate that SAPA BUMI mobilizes social, cultural, and technical resources collectively through a membership system, centralized drop points, and non-material incentives that support sustained participation. Nevertheless, several challenges remain, including limited member commitment, dependence on the founder, and minimal institutional support. Despite these constraints, SAPA BUMI prevented 710.7 kg of waste from entering landfills for over six months and encouraged household-level behavioral changes in waste sorting, composting, and reducing single-use plastics. This study concludes that SAPA BUMI offers a conceptual model of community-based waste management centered on collective action, family education, and equitable benefit distribution, thereby advancing environmental justice in urban communities.]]>
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