I know its a little late for this gripe, but every time we go to a restaurant to eat, most of the time we each get a large glass of water and a big picture of water to go with it. Some restaurants ask if you want water, which is better. That way, if you don't want water, there isn't a big glass of water to get thrown out.
If restaurants are going to serve water, then let it be a small glass. It doesn't have to be a quart-size glass. If a person wants more water, they can always ask for it. This practice would help keep our reservoirs full. That way, when I go fishing, I won't have to worry about my big fish splashing so much water out of the darn dam.