Why do they charge $1.25 for a glass of water especially when we are during draft beers with it

You could ask them

I've never been charged for water. You should have asked your server or bartender or the manager. This is a stupid question to crowd source.

Never knew them to charge for tap water. But I usually have a meal when I go there.

Is that the English language?

Don't know. Sounds to me like the bartender made a mistake, but i don't work there, so...