All drinking water from the tap in Curacao has been from a huge desalination plant for many years, see also [1]. There's a shortage of water alright, but not drinking water.

I don't know anything about this story, but when I just asked a friend who lives down there it was not known to him. When I showed him the article he said that it reads more like a first of April joke as anything serious.

For the record, it does not happen much, but it has been raining down there now for 2 whole days.

[1] https://www.theguardian.com/sustainable-business/2015/feb/18...