If we lived a more natural existence we would be drinking from a running stream or near a waterfall, not from stagnant water. So you can recreate this with the following components available from any pet shop / hardware store.

1 x fish air pump
1 x water jug / filter / water cooler etc

Place the fish pump near the water container with the air tube leading to the bottom of the container, this will oxygenate the water so you are drinking water that is in a more natural living form.

It may be that the mythical fountain of youth is just any old fountain / waterfall etc because the water is oxygenated and alive, not dead and stagnant like that which most of us drink.