I don't really get your point. Water isn't necessarily safe now, either. Just like now, you boil water if you are aware of risk. Just like now, people communicated about when to boil, where to gather water, skinning people alive for messing with the water (well that has perhaps improved a little bit), militaries would regularly poison water sources. And of course, you can find people today who willingly take dumb risks for no explicable reason. All of your uncertainty applies just as much to today as it did in the past.
Water has always been, is, and will be uncertain. But there's so much evidence of awareness of this that speculating people didn't drink water is absurd. Not to mention keeping water sources clean gets much harder with high populations we see today—we have roughly the same amount of water that we did before
Btw, you casually ACCEPTED that people drank beer instead of water when we know this is false. Even on ships (as you would know if you clicked through the askhistorians link under the top of the thread) ships did carry (a lot of!) water—it just wasn't listed as rationed unless supplies ran low. This was both drunk directly and added to the beer to produce the gallon allocated.
Ie you might follow the same rhetorical technique to say "why do you beat your wife? Well, the evidence is uncertain.", even if we have clear evidence you don't beat your wife.
You'd really have to find evidence that people explicitly avoided water to make such a claim. In all situations I can think of there was either certainty it was not potable (ie seawater, poisoned well, flooding, etc) and being unable to boil it.
Water has always been, is, and will be uncertain. But there's so much evidence of awareness of this that speculating people didn't drink water is absurd. Not to mention keeping water sources clean gets much harder with high populations we see today—we have roughly the same amount of water that we did before
Btw, you casually ACCEPTED that people drank beer instead of water when we know this is false. Even on ships (as you would know if you clicked through the askhistorians link under the top of the thread) ships did carry (a lot of!) water—it just wasn't listed as rationed unless supplies ran low. This was both drunk directly and added to the beer to produce the gallon allocated.
Ie you might follow the same rhetorical technique to say "why do you beat your wife? Well, the evidence is uncertain.", even if we have clear evidence you don't beat your wife.
You'd really have to find evidence that people explicitly avoided water to make such a claim. In all situations I can think of there was either certainty it was not potable (ie seawater, poisoned well, flooding, etc) and being unable to boil it.