Water, Megacities and Global Change

Numerous studies have explored urban growth and the emergence of the megapolitan phenomenon through increasing growth in the number of cities with over 10 million inhabitants. Similarly, the processes of climate change are also the subject of study from various perspectives as part of more operational approaches or research. Rather, the objective here is to highlight the impacts of those global changes (urban growth and climate) on megacities, their resources, and their water and sanitation services. What emerges is a singular vulnerability: megacities concentrate populations, services and goods. This amplifies the consequences of water-related risks (e.g. largescale floods, lack of resources, environmental pollution and other challenges).