In the modern world, the government can not independently manage public services, and due to the action of democratic forces, the civil sector, i.e. citizens, are involved in decision-making processes. Co-production as a form of collaborative arrangement presupposes the active contribution of citizens who, in interaction with public administration, provide a public service. One such public service is related to waste management models. Therefore, the topic of this research is the role of co-production in the prism of a sustainable waste management model called Zero Waste model. Through the analytical framework of multilevel metagovernance, this paper seeks to determine the casual mechanism that led to the introduction, as well as the current state of the Zero Waste model in the City of Prelog, in which citizens play an active role in its formulation and implementation. To do so, this paper uses process tracing method. Data were collected through the document analysis and thematic analysis of conducted interviews. The results show the presence of interactive triangulation of the public, private and civil sector, as well as the presence of co-production elements in polycentric governance arenas in the City of Prelog, which led to excellent results in the public waste management service.