I drink it all the time, seems fine to me.
I believe the part about the cold and hot coming from two different pipes, though- the pump to the tank on our roof broke this week, and we had no hot water one day, but plenty of cold. No logical way that could happen if it was all one pipe. Crazy way to do things, but, in the past, the tank, up on the roof, would naturally get hot from the heat of the sun- free hot water, before the age of hot water heaters being cheap and available.