I saw this, and thought it was a pretty incredible unit. Mind you, this is the largest unit...they also make a series of water bottles, and another Jerry Can that is either smaller, or just can be used fewer times before filter needs replacement. I've forgotten which. Anyways, lots of videos and reviews on this product. Check it out.
https://www.amazon.com/dp/B005FDCXL6/?tag=wranglerorg-20
https://www.amazon.com/dp/B005FDCXL6/?tag=wranglerorg-20