I doubt if water from spring or streams is still purely clean to the fact that there many illegal dumping of garbages nowadays. I still prefer to drink purified water.
I agree with the both of you. But he is saying when there is nothing around, and you need to survive. He is saying the best water to drink would be in an isolated area. Thanks for the tip, I didn't know you could live that long.
I think the salt would make things worse. It's probably like drinking sea water. You are better off not drinking it because the salt will only dehydrate you faster.