Hi, I winterize my dad's summer cabin each year, by using a dip tube to drain the 1" feed from his submersible pump, right where it enters his house at the floor. I've been doing this for 35 years, but this year, a couple days after doing it, there was a trickle of water coming out of the pipe, enough to fill a drink cup in about 30 seconds. He doesn't heat the house all winter, so I will soon have a problem! Even if I were to put heat tapes on the pipe, the water level this high means that the water level at the well is also this high, which is about at grade level, so the coming cold weather will damage the well pipe as well! Any ideas? Power to the pump is definitely shut off, I think maybe there's enough ground pressure to force water up, or something.