But ours is higher than yours...by your logic maybe there is a connection.
Not sure why you think we spend all day drinking ice water. Just because some countries don't have to boil/filter their water doesn't mean ice cubes come flying out of the tap. It just means when you are thirsty you can grab a glass of water at somewhere between cold and 49C. I'm sure people in China at times carry a little bottled water container with them. They don't stop when thirsty and stick a lighter under it to boil it because they can't stand water that isn't piping hot.
Oh my God he's crazy drinking that non-hot water!! The HORROR!! His life expectancy is going to go down!!!