Sump pump discharge line freezing in winter
Unless your discharge has a way to always let the water out, it will freeze in the wintertime and cause several problems for you. If the end of the pipe is frozen shut, the water that your sump pump ejects will come right back into the basin and cause your pump to run excessively. This can also lead to a mechanical failure of your pump from begin overworked.
Frozen sump pump discharge line