[appleseed]

http://www.berkeywaterfilterstore.com/

I got one of these, a little expensive but you can filter water right out of the river or lake. It’s portable too.

[DoughtyOne]

I was watching one of the scientific channels last night and they were talking about activated charcoal, the filtering chemical in these devices.

They showed a table (possibly a tea...) spoon and stated that it had as much surface area as a football field.

Amazing...

[editor-surveyor]

A berkey cannot remove dissolved toxins, just embolisms.

[AppyPappy]

Any outdoors store carried those filters. We use them in Scouts