Excessive groundwater extraction and urban development could be reasons for this. But these are common practice in almost all of the modern world, so why is this only showing up in Mexico City.
There must be other contributing factors too.
There must be other contributing factors too.
It is just most people pay attention to CDMX because it is a very large 20M+ city with a lot of American and European tourists, and it is happening quickly to the point where you can see it with the naked eye.