(First post - searched GQ but couldn’t find this specific question within the past year+)
My grandfather’s always sworn by “Michigan straight,” and I was conditioned at a young age to trust the tap. On the other hand, several people I know swear by brand-name charcoal filtration pitchers and tap fixtures, not just for taste but to keep out the biotic baddies lurking in the local water supply. Leads me to wonder if, in fact, we who drink “Michigan straight” are fortunate to do so… and if not, who has the best water (by quantitative cleanliness, not ‘taste,’ as I assume clean water leads to good taste anyway) in the US / Lower 48 (I just sort of assume Alaska’s water is the glistening pure stuff of brand-name charcoal filtration system commercials)?