I know the behind-the-scenes survival advisor for that show
The crew first asked him whether you could make a water carrier from snakeskin, then a little while later whether you could drink your own piss.
He told Bear to drink a feck load of water before filming that one.
(oneinthepink is at your cervix m'lady, Tue 2 Mar 2010, 14:08, 1 reply, 16 years ago)

I'd seen another program
a few years ago about drinking piss in the desert.

it wasn't direct urine-to-bottle though- it involved covering and evaporating the water in the urine, and drinking that somehow
(bamboozled Can hear you getting fatter, Tue 2 Mar 2010, 14:27, Reply)

Yep, it's just distilling the water.
Easy if you have the materials to hand.

I might hasten to add that distilled water is just as bad because it strips the minerals and salts from your body.
(oneinthepink is at your cervix m'lady, Tue 2 Mar 2010, 14:47, Reply)