Major Ursa - Technically not enough to dictate the amount of power he's using it for and even less so when you consider that said pipes would be so deep under the ground that they'd be undetectable *to avoid gardening clubs digging into them* and EVEN LESS when you consider that any water in the soil would not be so agitated by our movements that he would notice it, because if it WAS that sensitive, it would be constantly moving anyway by the thousands of students moving through the academy at any given time.

In other words Ursa, don't argue with me.