The metropolis of nearly 22 million people is facing a severe water crisis as a tangle of problems — including geography and leaks — are compounded by climate change.
You're not drinking the tap anyway. Supposedly even the ice in the drinks is from bottles. The locals drink bottled too. I've never gotten sick there. It's an amazing cosmopolitan city. You'll have a blast. The ruins are sick. The dispensaries have mushrooms if that's your thing. Tons of seafood. It was a moral quandary for me but I indulged in octopus last visit and it's out of this world in many restaurants. Incredible museums and art.
Thanks for the advice, unfortunately I'm a vegetarian. I'm going for the ruins actually! I'm a giant Mesoamerican history dork, in fact I'm reading a book about deciphering Nahuatl hieroglyphs. I got my route planned out all ready for the Museo Nacional de Antropología and Teotihuacan. I know enough Spanish to hopefully keep me out of trouble.
Assuming you're American? One of the first times I deprogrammed myself from "we're the uncivilized colonies" was seeing the amount of water bottles consumed across Europe. The US is blessed with the water we've had. It's not the norm.