[Spruce]

This has got to be worth something for someone nearby, even if its stripped for it's r/o system

http://www.ebay.co.uk/itm/Reverse-Osmosis-water-fed-pole-window-cleaning-water-tank-300Ltr-Di-Vessal-/291384469615?&_trksid=p2056016.l4276

I'm not sure about the 'tank', but I do like the idea of the r/o inside the tank and water line as it will prevent the chance of it being damaged by frost - as long as the water in the tank doesn't freeze.

[PoleKing]

Very interesting set up.
Can't see it being 300l but looks good.