Otherwise boiling is always a safe bet but it does require you to stop whenever you run low on water and build a fire or carry extra fuel. Are you going to carry a stove or build campfires? Depending on where you are campfires may not always be allowed or gathering firewood for that matter.
LOL! It seems every time you ask a question I come up with at least two or three for you.

I plan on being gone as long as I need to- There is no set "time limit".... I will not be carrying a stove, I'll be building campfires. I will have to be careful where I build fires I realize, but that's just part of paying attention to where I'm at, and the laws of the area.
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“Those who desire to give up freedom in order to gain security will not have, nor do they deserve, either one.”