Sure, bottled water isn't exactly the greenest beverage out there, but it's not a bad idea to keep a few bottles at home in case of an emergency. If you look at bottled water, it comes stamped with an expiration date. But the reality is, water never expires. According to the FDA, bottled water that is past its expiration date is perfectly fine to drink. The only thing you might notice is the water has a slight taste or odor. Be sure to store your emergency aqua in a cool, dark place where it won't get damaged.