Probably a function of how often you would be there using the camp and how well you insulate pipe where it comes above ground and into the house. I had the same setup at my place when I bought it. The woman that owned it had the heated wire in the line and she also had hay bales all around the house. When it got cold (single numbers during the day) she had do leave the water on in the sink ( steady drip) when she went to work. Otherwise it would freeze. If I wasn't there daily in dead of winter I would be nervous it would freeze.
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