The answer to 'why is my sump pump constantly running' is that the sump pump is likely trying to keep up with excessive groundwater or drainage issues. This can be caused by heavy rainfall, a high water table, cracks in the foundation, or other problems that are causing the sump pit to fill up faster than the pump can remove the water.
Some common symptoms of a constantly running sump pump include the motor running frequently or continuously, high electricity bills, and the pump wearing out prematurely. To troubleshoot and fix the issue, you'll need to identify the underlying cause, which could be anything from a malfunctioning pump to inadequate drainage around your home's foundation.