What is the main purpose of a sump pump?

The primary function of a sump pump is to remove water from basements and crawl spaces. This is crucial in preventing flooding and managing groundwater that may accumulate in these areas, especially during heavy rainfall or when snow melts. Sump pumps operate by collecting water in a sump pit and then pumping it out and away from the foundation of a building, effectively safeguarding structures from water damage, mold development, and structural concerns associated with excess moisture. This proactive approach is essential for maintaining a dry and secure environment in spaces prone to water accumulation.

The other options relate to different plumbing functions that do not align with the primary use of a sump pump, emphasizing that their focus is outside of water removal in these specific residential areas.