US/Canada here as well as someone that has visited most of Europe (UK, France, Netherlands, Belgium, Luxembourg, Germany, Switzerland) and stayed in hostels - no boiling necessary in any of these places.

There’s actually a pervasive myth I’ve encountered that hot tap water is dangerous and that one should only drink cold water. As far as I’m aware, this myth is due to an old setup for water systems that many homes had before modern taps. The tap was separated into separate cold/hot faucets. The cold water came safely from the city, but the hot water came from tanks that were stored in people’s attics and were therefore prone to rats and other creatures dying in them or bacteria building up. This is why still today, most British homes have separate hot/cold taps. I occasionally encountered such taps in the US and I assume that’s why my dad raised me to make sure the water was cold before drinking it. My father’s understanding of this was clearly outdated though. I learned all of this from a Tom Scott video.