So I once said I reuse the poland spring bottles when I have to get them... but they aren't BPA free! So we can actually hurt our bodies by doing this. It was bad advertising on my part.
So I encourage you to buy your BPA free water canteen ... maybe Klean Canteen or many of the other BPA free products on sale.
This is why its important to switch to glass food containers as well.
BE SAFE BUT BE GREEN!
Some BPA Free Products: