URBAN WASTE MANAGEMENT AND ENVIRONMENTAL SUSTAINABILITY IN DEVELOPING COUNTRIES: A CONCEPTUAL REVIEW

Rapid urbanisation, population growth, and changing consumption patterns have increased the quantity and complexity of municipal solid waste in many developing countries. When waste collection, segregation, recycling, and final disposal systems do not keep pace with this growth, waste can contribute to soil and water contamination, air pollution, greenhouse-gas emissions, blocked drainage, and public-health risks. This conceptual review examines the relationship between urban waste management and environmental sustainability, with particular attention to the institutional, infrastructural, economic, and behavioural factors that shape local outcomes. Drawing on established literature and international waste-management guidance, the paper discusses the limitations of disposal-centred approaches and considers the potential of integrated systems that prioritise waste prevention, reuse, source separation, recycling, biological treatment, and the safe management of residual waste. It proposes a framework in which environmental performance depends on the interaction of collection and treatment infrastructure with governance, financing, public participation, and access to appropriate technology. The review argues that no single intervention is sufficient: recycling initiatives, for example, are unlikely to deliver sustained benefits without reliable collection, markets for recovered materials, worker protections, and public trust. Local authorities can strengthen outcomes by improving waste data, clarifying responsibilities, supporting inclusive recycling systems, and evaluating programmes against measurable environmental and service indicators. As a conceptual review, this paper does not present original field data or claim causal effects. The framework is intended to guide future empirical research and help practitioners identify the complementary measures required for more sustainable urban waste systems.