So now people shouldn't order water at all? That is crazee talk.
What? If you're referring to my post just above yours, I didn't say any such thing. I'm simply trying to clarify what the previous poster said. I never s implied nobody should order free water; I can't be responsible for what readers infer.
It costs the restaurant minimally less to supply a glass (or glasses) of tap water to a customer than to supply flavored beverages.
Servers, bussers, dishwashers, etc., do exactly the same amount of work from start to finish for that glass of water as they do for the menu drinks.
The restaurant brings in revenue, and ideally ultimately Danes a profit, on the menu drinks.
The restaurant loses money on the glass(es) of no-charge tap water. In addition to the wages, there's the cost of materials, utilities, taxes...
So restaurants sell flavored drinks, and servers serve flavored drinks, and the price of the flavored drinks becomes part of the check; the check total is the basis for calculating the tip, and in 40 states restaurant servers are legally paid less than half the minimum wage because they're expected to garner enough in tips to get them to at least minimum wage.
Ordering a glass of water and drinking it as is is a cost of doing business for the restaurant.
Ordering a glass of water and doctoring it with one's own flavoring deprives the restaurant of revenue (that they would have taken in if the patron had ordered a drink from the menu) and the server of tip income.