Gagaryn - The annoying thing about this is the plastic waste, sadly.
@thusband - The only thing you need to bear in mind with distilling is that you have to be ahead of the game. For instance, I always make sure I have 4 litres of water in store, rather than finding the hard way I don’t have water for my next round of coffee, as, with my distiller at least, the process takes 6 hours.