AH, when I tested it at storage I used the pump on the trailer and no leaks anywhere, I will have to check it when I bring it home next week using city water, but when it was leaking there was no water around the toilet, the only water was right under the nozzle, the nozzle leaks for a few seconds after you hang it up on the wall and with 2 10 year old girls going back and forth to the bathroom I can see where the water would go under the toilet and leak on the other side of plywood. I will order the T in case it is cracked.