Recycling cooperatives play a crucial role in environmental sustainability by reducing solid waste, promoting the recycling and reuse of materials, and fostering social inclusion. This study aims to investigate the role of a municipal recycling project in supporting cooperatives and fostering sustainability in Apucarana-PR. The research adopted a qualitative approach, combining bibliographic review and semi-structured interviews with key stakeholders, including representatives from the cooperative and the municipal government. The findings reveal that sustainability projects enhance the circular economy by increasing the demand for recyclable materials and generating employment for cooperative members. However, challenges persist, such as limited infrastructure, financial constraints, and the need for stronger public policies to support recycling initiatives. The theoretical contributions of this study provide insights into how municipal partnerships can effectively integrate cooperatives into sustainable waste management systems. The social contributions emphasize the role of cooperatives in providing dignified work opportunities and raising public awareness about responsible waste disposal. This study highlights the importance of municipal support in overcoming operational barriers, strengthening cooperatives, and advancing local sustainability efforts. Future research should explore the long-term socio-economic impacts of cooperative-led recycling programs and the effectiveness of public-private partnerships in fostering circular economy practices. The relevance of this study lies in its analysis of the challenges and opportunities in implementing these projects within a social and environmental context.