Scotland here. We don't boil water before use.
I have family down in North West England that do have to do this, though. They live in an area where there is a thin layer of soil and a lot of clay. The water isn't particularly hard but it also doesn't taste very nice if you don't boil it first.
Jesus. Fucking. Christ.
If people don't know what their kids are looking at online then perhaps they should gain some technical literacy and parenting skills.