Hi, I was unsure of which forum to ask this question in, but anyway, my question is there there a water bottle with a built in filter that is NOT made from plastic? I know Brita has a water bottle with a filter in it, but it's made of plastic. (BPA free or not, I don't want plastic). Thanks!
You could try a charcoal purifying stick - Kishu Binchotan - depending on what you are trying to filter. Note also that the charcoal adds some minerals and you may not want that. You can use the stick in any glass water bottle. Here's an example.
I haven't tried it myself but I have seen it and I am curious about it.