Fun fact: I grew up thinking Canada has the most freshwater in the world. Not true. That title belongs to Brazil—home of the Amazon and hundreds more rivers.
Yet São Paulo, Brazil’s biggest city, is bracing for a full-scale water disaster this summer. The megacity’s 20 million residents are already facing daily tap cut-offs thanks to years of poor management and a changing climate. With the city’s main reservoir now at five percent, São Paulo is way short of the water it needs to last until the next rainy season in November. If uncharacteristically dry weather patterns continue into April, city officials have confirmed a rationing program could limit running water to just two days per week.