What exactly is 'Super Water' when enabled in the graphics settings?

@Amphora - Sorry to have to tell you this, but the others here are pulling your leg. Super Water is actually wetter than regular water, it tastes better, and makes fantastic coffee (or tea). It has nothing to do with game graphics. They are only misleading you because they want to preserve the natural supply of Super Water and ensure there is enough for themselves to enjoy. >:)