Mountain areas are not the issue it all depends on the engineering. Nothing more. Many systems are really old and poorly designed. Many countries just do have the monies to upgrade to modern standards. Brighton did not upgrade cause they did not have the money and in the summer they got pumped out. Now they are on a real sewer system.

Like most host cities, the Russian have blown it, billions spent and this is what they present to the world. Having lived in a host city the Olympics are really BS anymore - it is not about the athletics - half of venues are not even sports. It is all about being in the club.