This happened a couple of El Niño cycles ago, in the 2015-2016 one:
> The City of Cape Town began experiencing a drought in 2015, the first of three consecutive years of dry winters brought on possibly by the El Niño weather pattern and perhaps by climate change
> The City of Cape Town began experiencing a drought in 2015, the first of three consecutive years of dry winters brought on possibly by the El Niño weather pattern and perhaps by climate change
https://en.wikipedia.org/wiki/Cape_Town_water_crisis
It's quite possible that this one could worse.