Yes, I also hate to carry water, but CrowKel you may not that the OP indicated they were going where there is *no* water. I do the same thing in the canadian rockes, I seldom carry more than a litre with me, and only carry pristine drops to purify.

If water is actually available on the trail, then great, carry some form of treatment, but if not, 3 days worth of water will be *very* heavy in that environment.