Water is a precious resource. Although it covers 71% of the Earth’s surface, the United Nations estimates only 4% of it is fresh. Of that tiny amount, only 0.5% is appropriate for human consumption. That is why it is important to protect the resource as much as possible.
In Buenos Aires there is an ambitious project to clean up the Riachuelo River, one of the most polluted in the world. Among the project’s many initiatives is the excavation of a 12-kilometre hydraulic tunnel, that will flush into the River Plate waste water that will be pre-treated by a plant being built nearby.
Salini Impregilo’s work on the tunnel is explored within a photographic essay of the river and the wider basin where 23% of residents of metropolitan Buenos Aires live.
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