It's my understanding that the latency is approximately equivalent to the speed of sound as that is a function of stiffness and density. There's some detail mi

It's my understanding that the latency is approximately equivalent to the speed of sound as that is a function of stiffness and density. There's some detail missing still. What's the temperature of the water? How long is the puddle (or rather what's the total volume)? What's the surrounding material? I'd guess the limit is right depending on how much energy you can put into the water before it boils. At least several hundred megabits per second, I reckon -- I'm probably under by one or more order of magnitudes.