The New York Times has an article about an impending absolute water shortage in Sao Paulo, a metropolitan area of 20 million people.
As southeast Brazil grapples with its worst drought in nearly a century, a problem worsened by polluted rivers, deforestation and population growth, the largest reservoir system serving São Paulo is near depletion. Many residents are already enduring sporadic water cutoffs, some going days without it. Officials say that drastic rationing may be needed, with water service provided only two days a week.
We know mega-cities in the poorest countries struggle to provide water and other basic services, particularly to the poorest people, and climate change is going to make that worse. But this might be the first example of drought and climate change moving up the income scale, affecting relatively affluent people in a relatively affluent (though certainly unequally distributed) city and country. You can say it is due to poor planning or an absence of planning, but that suggests long-term climate change planning is not something any city or country can afford to ignore, no matter how secure its water situation might seem now.