It seems like a sensible provision, but business is business and the law does not prevent charging for the use of a glass or for service. It doesn’t extend to filtered tap water. They can charge for that. But if they serve alcohol, they have to provide free drinking water, whether it’s filtered or unfiltered.
Syfy (formerly Sci-Fi Channel) is an American basic cable and satellite television channel that is owned by the NBCUniversal Cable division of NBCUniversal, a subsidiary of Comcast. The channel features science fiction, drama, supernatural, fantasy, reality, paranormal, wrestling, and horror programming.