Thanks again for all the feedback. I like the few thousand caribou comment a lot. We're primarily bow hunters at home and a good bow hunt is just seeing a deer.
We've already got filtration gear. We're gonna use it. I'm with bwinters. I drank the water once where I shouldn't have and spent 3 days on the toilet after that. It's just not worth the risk. We've got a full filtration kit of some kind for camp and life straws for our packs.
We are flying with Brooks Range Aviation. They seem to be highly recommended by everyone that we've encountered.
For camp water get a gravity feed system. I have yet to see a straw worth carrying... have not tried them all, but the ones I did would not suck!
