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.
Antoine Lavoisier (lah-vwah-ZHAY), 1743-1794, introduced quantitative measurement into the study of chemistry with his discovery of the law of conservation of mass. He discovered the role of oxygen in combustion and established the principles for naming chemicals. He wrote the first modern chemistry textbook in 1789.