For those of us who are water freaks and have a million of our own reusable ones, beware.
Apparently there is some big shenanigan going on with Nalgene bottles and #7 plastics.
Here are some articles:
http://www.sierraclub.org/sierra/200311/lol5.asphttp://steelwhitetable.org/blog/2007/12/07/bad-plastic-in-water-bottles/http://answers.google.com/answers/threadview?id=744739 I encourage you to look into this on your own time because I did not exercise great care in finding awesome articles.
Looks like I'll be switching entirely over to my #4 bottle.