It doesn't hurt, if you do your own handyman work, to pre-assemble the kit needed to defrost a well line. I keep mine handy. You need about 30 feet of the harder transparent pipe they sell by the foot in the hardware store, depending how far your well is from your basement, has about 1/4 or 3/8 inch internal diameter, as well as one of those black submersible utility pumps, hardware fittings to go from the pump to the 30-foot pipe, and a nice clean five gallon bucket. Set aside enough water to fill that bucket somewhere it doesn't freeze. If your well pipe freezes, you heat that water up super hot on your stove, fill the bucket, turn the well off, disconnect the well line close to the place it comes into the basement, and put the bucket under the end to catch the water and recycle. Pump the hot water into the well pipe, recycling as much as you can. Push the line in as you go. It will melt the ice in the pipe at a rate of a couple inches a second. As soon as it is ice-free, reconnect and turn on the well. Then run the tap furthest from the well for the rest of the hard part of winter. The same kit is good for winterizing onboard and stern drive boat engines and campers, only in that case you pump RV antifreeze instead.