We can’t speak about “Mexico,” but Hermosillo has a pretty good infrastructure; and it is pretty resilient, too. We didn’t know how good we had it until September, 2007. That was when Henriette, a Category 5 hurricane went through Sonora. In the process, it knocked out phone, power and internet access in much of Hermosillo.
Power in our offices was restored within a few hours; phone and internet access were restored by the end of the second day. The storm went through on Wednesday, September 5 and most people were back at work in the office on Friday, September 7.
There’s also running water and even indoor toilets :)