Can I use this filter to drink out of a stream/lake/outdoors? April 22, 2019 19:17 Follow No, this bottle was not designed for water that contains bacteria, virus, and/or cysts. Related articles Can you add flavored packets or loose tea to the bottle? Can I use hot water? Do you have testing to back up your performance claims? Click here for the Performance Data Sheet Where are your products made? Comments 0 comments Article is closed for comments.