I am not anything close to an ecologist or a biologist so this question may be really dumb. But I know that water is essential. It is used in many important bodily processes and we would die without it very quickly.
So my question is, how did so many generations of humans survive without the water purification standards that we have today?
Is there a reasonable amount of dirt, toxins, bacteria, etc… that can be in water and it won’t make us sick?
I also know people have boiled water for a very long time but didn’t we only discover bacteria and viruses in the lasts several hundred years? Did people know that boiling water would purify it?
Also am I wrong for thinking that most water in nature is dangerous to drink?
Hopefully these questions make sense.
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When my National Guard squadron flew to Honduras in the 80s for deployment, we were warned not to drink local water when off base. Because it was a small village, the water was deemed non-potable. We were working to build a wall for the small school and we had to bring our own water with us. The medical officer briefed us when we landed, that the majority of the local population had internal parasites. We were told not to accept water or juice, milk, or eat fruits and vegetables. Beer and hot coffee were acceptable.
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