[iamacyborg]

Thames Water have been installing free water bottle refill stations around London for a few years now.

Also maybe less of an issue over here as you can generally just ask for a free glass of tap water in most places that serve drinks.

[gadflyinyoureye]

As a tourist I would never do that. It had for me to picture walking into a McDonald’s for a cup of water.

[antisthenes]

Why???

It's literally rule 0 of hospitality, to offer those in need a glass of water.

The only way it's awkward is if the place is very busy.