Nothing like a good heated conversation on a cool brisk morning. Since we are talking about this kit for inclusion in a survival kit, I would assume that the kit has the ability to produce flame, pretty much a fundamental prerequisite for survival situations.

I handle the "pot" situation by carrying a cup (GSI or Olicamp) that fits on the base of a Nalgene or energy drink container which is also fundamental to a survival kit (mine, anyway). ultralight titaniium cups are available if you wish to spend the money for very marginal weight savings.

The deal breaker for me is the four hour processing time. That would not be a problem is some situations, but if you come upon a water source in an arid situation, you are not going to wait that long - trust me.

Nor should you. The consequences of dehydration can be, and have been, quite deadly. Just go ahead and drink up. When you make it back to town, medical science is your friend and can get you straight again.

Back in the old days, I drank routinely from untreated sources, typically mountain streams and springs, never suffering any ill consequences. I would not do that today, if I have options.