don't know if anyone's following this link anymore, but this question, listed in "Siblings" got me curious. i hunted around and found a straight-forward article on the topic. it's surprisingly non-alarmist. still think i'll avoid plastics...
Anyone know of an alternative to plastic pouches that isn’t plastic? I would love to find one but I don’t think it exists. I do have a metal water bottle, but the pouch is very convenient for long hikes or bike rides.
I think CamelBak brand tubes and bladders are supposed to be lined with polyethylene which is supposed to be a non leaching plastic. (I think).
I don’t know much about plastics and leaching, but my girlfriend and I both drink at least 1 32oz nalgene bottle of water each day, so we started using the HDPE bottles instead of the more common Lexan bottles which are supposed to be worse.