"Nobody really knows, because no city of Cape Town’s size has ever had to deal with a crisis of this magnitude. Water shortages are a familiar challenge for large cities in India, Indonesia, Mexico, and Brazil: São Paulo, a city of 12 million people, came within 20 days of a complete shutoff in 2015, but was saved in the nick of time by rains. Even that close call led to the looting of emergency water trucks. In the Middle East, home to some of the world’s most water-poor countries, growing populations, overexploitation of resources, and mismanagement by authorities have led to similar crises: Conflict over scarce water resources is already a fact of life in war-torn Yemen."

"Sparsely populated, low-income communities across the country suffer from polluted water—an injustice expected to worsen under Trump."

"In Cape Town, South Africa, they're calling it "Day Zero" -- the day when the taps run dry.

City officials had recently said that day would come on April 22. They have since moved up the date to April 12.

Cape Town is South Africa's second-largest city and a top international tourist draw. Now, residents play a new and delicate game of water math each day.

They're recycling bath water to help flush toilets. They're being told to limit showers to 90 seconds. And hand sanitizer, once somewhat of an afterthought, is now a big seller.