Can one drink too much iced tea?!

Can one drink too much iced tea?

I personally don't like drinking eight glasses of pure water everyday so I substitute tea (either green or black) with a little sugar, everyday. In a day I usually drink 1/2 - a gallon a tea a day. Is it unhealthy to drink this much?

There is no problem with Green tea, brew it a little weak. Black tea can give you kidney stones (not fun for a woman, several inches less fun for a man). My rule is to drink at least as much water as tea, so if you can manage the exercise to and from the bathroom all day, have fun!