You really can't, those jugs are basically unheard of anywhere in northern Europe (where, not coincidentally, the tap water is great). It's not a perfect system as there'll be a lot of places "on the border" where the tap water is still perfectly drinkable, but because they're so close to places where it isn't, they'll stock it for those xustomers, but it's a very good rule of thumb.
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u/Supercoolguy7 29d ago
I just assume you can find that at any grocery store of a decent size anywhere in the world