I would be more afraid of the first time you drink from the bottle...imagine how much longer it has to soak in carcinogens. I think the whole bottled water idea had us majorly duped....lies upon lies upon lies...and then of course they come up with "Don't refill the bottles because...." Great marketing....
A cousin of ours is the guy who does all the water testing for different bottled water sources...he wouldn't touch bottled water if someone paid him to drink it...now that tells you something.