How does a city run out of water?
The answer to this question can be found in Cape Town, South Africa, currently in danger of doing exactly that.
How did Cape Town get to the point where it had to plan for "Day Zero," when extreme restrictions on access to water will be enforced? We don't pretend to know all of the details as to how a metropolitan area of nearly 4 million people managed to become "the first major city in the modern era to face the threat of running out of drinking water." What we do know, however, is that Cape Town is not alone, with a recent report exposing 11 other cities at risk. Tragically, we believe this total underestimates the number of cities in peril.