More likely, you'd be unable to consume the caffeine in a such a diluted form fast enough to exceed the rate at which the liver clears it - it takes time to emp

More likely, you'd be unable to consume the caffeine in a such a diluted form fast enough to exceed the rate at which the liver clears it - it takes time to empty out the stomach of all that water you're consuming along with it. Remember that humans detoxify caffeine much faster than most other mammals, too.