Only a few days to go. I'm trying to avoid last minute gear freakery and purchase thereof (see Alan Sloman's blog and Peewiglet's for sad cases of this). I'd thought a bit about the risk of contaminated water on the Challenge and had toyed with the idea of a Travel Tap available from the excellent Backpackinglight but had been put off by the cost of £34.99. However, at the recent Backpackers Club AGM, where there is always a car boot sale at the end, I was fortunate enough to buy an early version of the Travel Tap (the filter is fixed so, when it becomes clogged and unusable, the whole device is thrown away) for only £3.00. It's owner assured me that a fair amount of the 100 gallon filtering life should be left so I went for it. On the way home from the AGM, I filled the bottle from a stream which would probably have had some farm run-off pesticide in it and that tasted fine. Last weekend, on a visit to my brother, to his disgust, I sampled the dregs of his water butt and suffered no ill effects and it tasted fine. So, I reckon I got a bargain and am sure that at some time I shall invest in the full price up to date model.