A sump pump is a device used to remove water that has accumulated in a sump pit, typically found in the basement of homes. Its primary function is to prevent flooding and water damage by pumping excess water away from the foundation. Sump pumps are especially useful in areas with high groundwater levels or heavy rainfall. These pumps are usually activated by a float switch that detects rising water levels. When the water reaches a certain height, the pump turns on and expels the water through a discharge pipe. Regular maintenance is important to ensure that a sump pump operates effectively when needed.