Lets assume one 1 litre metal water bottle and a 1-2 litre platypus plastic bottle and 1 MSR reactor stove.

Boil 1.5 litres of water (takes 6 minutes). Fill the water bottle with hot water and put it in the stream. Make a cup of tea with the rest. Drink the tea while the water cools down in the stream. (10 minutes to cool down). Transfer to the platypus.

Boil up another 1.5 litres of water. Refill the metal water bottle and consume another .5 litres of tea. Put the metal water bottle back in the stream (another 10 minutes)

Boil up another 1.5 litres of water in the Reactor stove. Lock the lid on the stove pot and cool the pot in the stream.


1 litre of water has been consumed as tea, with the rest of breakfast, lunch or dinner and 3.5 litres of water have been sterilized (enough for the rest of the 24 hrs period) in less than 30-40 minutes.

A couple of condoms and a pair of socks could also improvise another 1-2 litres of water needs. (add another 20 minutes to the total)