This video shows you how to filter and clean water when you’re on the go. Here at Independent Living, we’ve tried this method and we’ve found that fine sand and charcoal (from a bonfire, or BBQ) work just as well. We’ve also done away with the fabric and just pierced holes in the lid of a plastic bottle. The important thing to remember is that the clean-looking water still needs treatment. Heat, bleach or colloidal silver will do the trick.