River ecosystem degradation caused by household waste disposal and production waste has become an environmental issue that reduces water quality and threatens the sustainability of local community livelihoods. In Ambulu Village, Wringin District, Bondowoso Regency, bamboo waste generated by fish basket (besek) artisans and the low level of public awareness regarding waste management have become the primary sources of river pollution. This community service program aimed to enhance the community's ecological literacy, improve river environmental conditions, and support the economic sustainability of besek artisans through the Participatory Action Research (PAR) approach. The implementation method consisted of planning, action, observation, and reflection stages involving community members, village officials, youth organizations, and besek artisans. The program included waste management education, river clean-up activities, riverbank vegetation planting, installation of environmental educational media, and restocking of local fish species. Program evaluation was conducted before and after the assistance through performance observation, field observation sheets, and structured interviews. The findings indicate that the PAR approach effectively promotes community-based participatory empowerment, contributing to river conservation while strengthening the social and economic sustainability of the Ambulu Village community.
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