how did/do native peoples find safe drinking water? Is water boiled? Or have they built up immunities to funky junk in the water?
In: Biology
Safety is a spectrum and there’s a difference between safe and safe enough. Generally clear running water if taken from the surface is safe enough anywhere there isn’t substantial population in proximity or upstream. General rule of thumb was that flowing water was safe enough and if the water was stagnant or slow moving you needed to boil it first.
There also was a certain level of tolerance built up by using the same drinking source to things that are in it as that doesn’t change all that often unless you have a bunch of people or industry adding things to it.
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