> What are the practical consequences of this today

Infrastructure degradation. Think overpass collapses or metro rail lines being misaligned.

> what is being done to remedy this

Not enough. CDMX faces the issue of multiple political entities with varying power making management difficult.

A lot of the subsidence happens in informal settlements [0] due to a mixture of political populism (no one would dare demolish an informal settlement and piss off voters).

Beijing used to have a similar issue, but a mixture of hukou, mass evictions, and mass demolitions helped alleviate the issue.

[0] - https://penniur.upenn.edu/uploads/media/02_Gutierrez.pdf

We can also see it play out in other countries, that had solar water pumping for the last ten years, like afghanistan. In the end stage- its water wars with neighbours like Pakistan or Iran.

Just as a fun fact, here are some images of the extent of subsidence (due to groundwater pumping for agriculture) in the California Central Valley: https://www.usgs.gov/centers/land-subsidence-in-california/m...

Note in particular the last one, which is a classic. Roads, buildings, and all underground infrastructure is affected. As well as anyone else who uses that groundwater, as well as future users - because come groundwater reservoirs do not recover, the compaction is permanent.

The San Joaqin Valley picture is astounding!

https://www.usgs.gov/media/images/land-subsidence-san-joaqui...

They are clearly not doing enough to remedy this; The only real solucion is to stop pumping the ground water, like I believe Japan did.

Miami has a similar issue, doesn't it?

Due to construction not ground water problem. Mostly building load and construction induced.

so does Jakarta and few other cities in the world.

I don't even see how buildings can survive that actually... (unless it's happening very evenly)