Actually it is not as long as a wait as one may think. I was stuck in a "survival" situation to where I had not choice but to dirnk the water that I found in a green/black pond with 2 feet of slit and cow pies all around the perimeter and floating in the water. I treated my water and waited a full hour but never got sick from it. So under the normal conditions the 1/2 hour will do just fine. YMMV
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I miss my 4.8lb base weight as a ground dweller. But I sure don't miss the ground.