In the next 10 years, 70 percent of the worlds population will live in cities, due to urbinization, 21st century’s most transformative trend. This reality places them at the forefront of sustainable development and facing global challenges, including climate change.
The world’s ten biggest cities will include:
- Tokyo (37.2 million)
- Delhi (36.1 million)
- Shanghai (30.8 million)
- Mumbai (27.8 million)
- Beijing (27.7 million)
- Dhaka (27.4 million)
- Karachi (24.8 million)
- Cairo (24.5 million)
- Lagos (24.2 million)
- Mexico City (23.9 million)
From 2016 to 2030, a 35 percent population increase is expected in these top ten mega cities. Because of this, local and regional authorities lead initiatives targeting water-related obstacles, including housing gaps, climate change and an increased demand for food, energy and water.
“Flooding and droughts have increased globally and the impact is devastating. Cities across the world are already experiencing effects of climate change. Infrastructure and houses are destroyed and we call on governments to be aware of the effects that adequate water infrastructure can have to improve or aid these situations,” says World Water Council President Benedito Braga.
In light of this, five organizations (Local Governments for Sustainability, United Cities and Local Governments (UCLG), the Global Water Operators’ Partnerships Alliance, the Brazilian Confederation of Municipalities, and the World Water Council) have joined forces to create greater support for these issues. Water investment thus becomes a unifying factor in fostering healthier and more prosperous cities, offering impoverished populations a real chance at progress. Cities and regions often lack guidance on how to achieve them locally, contribute to nationally set targets and implement concrete solutions.

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