Solid waste management in the Mediterranean region represents one of the most complex and pressing environmental challenges of the 21st century, shaped by a unique combination of demographic pressures, economic disparities, tourism intensity, and fragile ecosystems. The Mediterranean basin, home to over 500 million people and one of the world’s leading tourist destinations, generates rapidly increasing volumes of municipal solid waste (MSW), while facing persistent structural deficiencies in collection, treatment, and disposal systems. These challenges are particularly acute in the southern and eastern Mediterranean countries, where institutional, financial, and technical limitations hinder progress toward sustainable waste management systems.
Scale of the Problem
The scale of the problem is reflected in both terrestrial and marine environments. Municipal solid waste generation has been steadily increasing across the region, driven by urbanization, changing consumption patterns, and seasonal tourism peaks, with some coastal areas experiencing population surges of several hundred percent during summer months. According to regional assessments, waste generation in the MENA countries exceeds 200 million tonnes annually, with significant disparities between northern EU countries and southern neighbors in terms of management performance [1,2]. While European Union countries have made progress through regulatory frameworks such as the Waste Framework Directive and Circular Economy Action Plan, many southern Mediterranean countries still rely heavily on landfilling and open dumping as primary disposal methods [3].
A defining characteristic of solid waste management in the Mediterranean is the stark north–south divide. In EU Mediterranean countries such as Spain, Italy, and France, waste collection coverage approaches 100%, and recycling rates have improved significantly, reaching over 40% in some cases. In contrast, in several countries of North Africa and the Middle East, collection rates remain uneven, particularly in rural areas, and more than 50% of collected waste is disposed of in uncontrolled dumpsites [1,4]. This disparity reflects differences in governance, financial capacity, and technological infrastructure. The European Environment Agency highlights that integrated waste management systems-combining prevention, recycling, recovery, and controlled disposal have been key to improving performance in EU member states [3].
One of the most visible and alarming consequences of inadequate waste management in the Mediterranean is marine litter. The Mediterranean Sea is often described as one of the most polluted seas in the world due to its semi-enclosed nature, limited water exchange, and high anthropogenic pressure. It is estimated that around 730 tonnes of plastic waste enter the Mediterranean Sea every day, with plastics accounting for up to 95–100% of floating litter [2,5]. Annual plastic leakage into the sea is estimated at approximately 229,000 tonnes, highlighting the magnitude of land-based waste mismanagement [5,6]. These figures underscore the strong link between terrestrial solid waste management systems and marine pollution.
The sources of marine litter are diverse but largely originate from land-based activities, including inadequate waste collection, illegal dumping, and poor landfill management. Coastal tourism plays a significant role, as seasonal increases in population generate large quantities of waste that often exceed local management capacities. In addition, rivers act as major conduits, transporting waste from inland areas to coastal zones. The Horizon 2020 Mediterranean Report emphasizes that ineffective solid waste management practices such as open dumping, uncontrolled landfills, and lack of recycling infrastructure are primary drivers of marine litter [7]. Scientific studies confirm that plastic waste distribution in the Mediterranean is influenced by coastal density, hydrodynamics, and human activities [6].
Challenges to Overcome
Institutional and governance challenges are central to the region’s waste management problems. While many Mediterranean countries have adopted legislative frameworks aligned with international conventions and EU standards, implementation remains inconsistent. Weak enforcement, limited coordination among institutions, and insufficient monitoring systems hinder effective policy execution. In southern Mediterranean countries, responsibilities for waste management are often fragmented between national, regional, and municipal authorities, leading to inefficiencies and gaps in service delivery. Reports by ESCWA and UNDP highlight the need for stronger governance structures, improved regulatory enforcement, and better data collection systems to support decision-making [4,8].
Financial constraints represent another major barrier. Waste management systems require substantial investments in infrastructure, including collection fleets, sorting facilities, recycling plants, and sanitary landfills. However, many municipalities in the Mediterranean region lack the financial resources to develop and maintain such systems. Cost recovery mechanisms, such as user fees and extended producer responsibility schemes, are often underdeveloped or poorly implemented. As a result, waste management services are frequently underfunded, leading to inadequate coverage and poor service quality. The World Bank estimates that improving waste management systems in the region would require significant increases in investment, particularly in treatment and recycling infrastructure [1].
The informal sector also plays a significant role in solid waste management in many MENA countries, particularly in North Africa. Informal waste pickers contribute to recycling by recovering valuable materials such as plastics, metals, and paper. While this activity provides livelihoods for thousands of people, it is often associated with unsafe working conditions and lacks formal recognition. Integrating the informal sector into formal waste management systems presents both a challenge and an opportunity. Successful examples from countries such as Algeria and Egypt demonstrate that formalization and support of informal recyclers can improve recycling rates while enhancing social inclusion [9].
Another critical challenge is the limited development of recycling and recovery systems. Despite the high potential for resource recovery, recycling rates in many Mediterranean countries remain low, often below 10% in southern regions. Organic waste, which constitutes a large fraction of municipal waste (up to 50–60%), is rarely valorized through composting or anaerobic digestion. Instead, it is typically disposed of in landfills, where it contributes to methane emissions and environmental pollution. In contrast, EU countries have increasingly adopted circular economy approaches, promoting waste prevention, recycling, and energy recovery. Policy instruments such as landfill taxes, recycling targets, and producer responsibility schemes have proven effective in driving improvements [3,10].
Tourism adds another layer of complexity to solid waste management in the Mediterranean. The region attracts more than 300 million tourists annually, generating large quantities of waste in coastal areas and islands. Seasonal fluctuations in population can overwhelm local waste management systems, leading to increased littering, illegal dumping, and environmental degradation. Small islands are particularly vulnerable due to limited land availability and infrastructure. Initiatives such as “Zero Waste in the Mediterranean” emphasize the need for targeted strategies, including waste reduction, improved logistics, and behavioral change [11].
Climate change and environmental sustainability are closely linked to solid waste management in the Mediterranean. Improper waste disposal contributes to greenhouse gas emissions, particularly methane from landfills and carbon dioxide from open burning. At the same time, climate change exacerbates waste management challenges by increasing the frequency of extreme weather events, which can damage infrastructure and disrupt services. Integrating waste management into climate policies and promoting low-carbon solutions are essential for achieving sustainable development goals [2,10].
Success Stories
Despite these challenges, there are significant opportunities for improving solid waste management in the MENA region. The transition toward a circular economy offers a promising pathway, focusing on waste prevention, resource efficiency, and recycling. A large proportion of waste generated in the region could be diverted from landfills through improved systems and investments in modern infrastructure [1,10]. Regional cooperation also plays a crucial role. Initiatives under UNEP/MAP, the Barcelona Convention, and EU-funded programs such as Horizon 2020 facilitate knowledge exchange and capacity building. The Marine Litter Regional Plan represents a pioneering legally binding framework for addressing marine litter [5].
Technological innovation and digitalization are increasingly important in addressing waste challenges. Advances in sorting technologies, recycling systems, and waste-to-energy solutions provide new opportunities for improving efficiency and reducing environmental impacts. Digital tools for waste tracking and data management enhance transparency and governance. However, these solutions must be accompanied by strong institutional frameworks and public engagement to be effective [3].
In the Mediterranean context, Algeria has undertaken several significant and positive steps to improve solid waste management through a progressive and structured approach led by the Ministry of Environment and Quality of Life and supported operationally by the Agence Nationale des Déchets. This dynamic has been further strengthened by the adoption of Law 25-02, which marks an important evolution of the national legal framework by reinforcing principles of sustainable development, circular economy, and integrated waste management, while clarifying responsibilities across stakeholders and promoting better governance, traceability, and control of waste streams.
Within this framework, Algeria has consolidated its regulatory and institutional system through the implementation of integrated waste management strategies aligned with circular economy principles; accelerated the development and modernization of engineered landfill centers (CETs), contributing to the gradual elimination of uncontrolled dumpsites; established national planning tools, inventories, and technical guidelines to support local authorities; launched pilot projects for selective sorting and recycling, particularly in urban areas; promoted public awareness campaigns and environmental education programs aimed at encouraging waste reduction and citizen participation; reinforced international cooperation through regional initiatives such as UNEP/MAP and EU-funded programs; and progressively encouraged private sector participation to stimulate investment in recycling and resource recovery.
These combined efforts, supported by the legal consolidation brought by Law 25-02, reflect a tangible transition toward more sustainable, transparent, and structured waste management practices, positioning Algeria as a country actively engaged in improving environmental performance despite remaining challenges.
Conclusion
Solid waste management in the Mediterranean region is characterized by increasing waste generation, significant disparities between countries, and persistent environmental challenges, particularly marine litter. Addressing these issues requires integrated approaches combining policy reform, investment, technological innovation, and stakeholder engagement. By leveraging regional cooperation and adopting circular economy principles, Mediterranean countries can move toward more sustainable and resilient waste management systems.
References
[1] World Bank, 2022. Waste Management in the Middle East and North Africa. Washington, DC.
[2] UNEP/MAP, 2015. State of Pollution in the Mediterranean Sea. Athens.
[3] European Environment Agency (EEA), 2020. Waste Management in Europe: Indicators and Trends. Copenhagen.
[4] United Nations ESCWA, 2011. Compendium of Environment Statistics in the ESCWA Region. Beirut.
[5] UNEP/MAP, 2015. Marine Litter Assessment in the Mediterranean. Athens.
[6] Cózar, A., et al., 2015. Plastic Accumulation in the Mediterranean Sea. PLoS ONE 10(4): e0121762.
[7] European Environment Agency (EEA), 2014. Horizon 2020 Mediterranean Report. Copenhagen.
[8] UNDP, 2021. Waste Management in Arab States: Policy and Institutional Frameworks.
[9] Wilson, D.C., Velis, C., Cheeseman, C., 2006. Role of informal sector recycling in waste management in developing countries. Habitat International 30, 797–808.
[10] European Commission, 2020. Circular Economy Action Plan. Brussels.
[11] Zero Waste Europe, 2019. Zero Waste in the Mediterranean: Case Studies and Policy Recommendations.
