Supposedly there was a time when drinking beer was often safer than drinking water from available sources, including for children. I guess there are levels

They didn't make Arnold a saint for nothing.

https://en.wikipedia.org/wiki/Arnold_of_Soissons

A lot of it was weaker small beer though too, like 1-2%.

Each person was going through a gallon a day though, that’s still 4-5 standard drinks which is a crazy amount to drink all day everyday.

Spread throughout the day you wouldn't be more than half a standard drink deep at a time in terms of psychological effects.

Terrible for your liver though.