
Mexico City has experienced some of the fastest rates of subsidence globally, with some areas sinking as much as 20 inches per year in recent decades, and continued droughts are contributing to accelerating the issue, The Washington Post reported.
Researchers attribute this to the compression of clay layers beneath the city, with the extensive extraction of groundwater being a significant factor in this. Considering that over half of the city's water supply sourced from underground aquifers, addressing this issue has been a considerable challenge.