Hopefully, we have a well guy or a plumber that can help with this question. I have a new cabin that will be used during the winter. After construction it was explained to me that the following must be done to the well between visits in the winter. (Is this easy, necessary etc.) "Besides opening the exterior drain at curb stop, each time you leave you will need to take the cap off the top of the well and turn the handle on a pipe just below the cap, which opens a drain down 8 feet in the well, so the water can drain out that is in the riser pipe."