All this nonsense about unsafe water... They had wells, just like wells today. Water from the underground aquifer is safe to drink, and people then weren’t retarded, read actual texts, not just two hundred years ago, even two thousand years ago... they were pretty damned sharp and understood far more than moderns give them credit for. Beer and ale were consumed because they enjoyed it AND because they needed the extra calories due to a much more active lifestyle, and beer/ale (not so much hard liquor => can be dehydrating then slightly) is an easy way to add some calories while you work and quench your thirst at the same time. For those who work hard outside doing physical labor, the same still holds.
It is not nonsense and the wells of the past were nowhere as deep as the wells we use today and there was a fundamental lack in understanding as to the contaminants that water can carry.
In ancient Rome mixing wine with water was a common practice and well documented, I believe the concoction was called merum.
Also, often water was not only obtained from a well. This is all well (pun intended) established history, do a little research.