A sump pump is a pump used to remove water that has accumulated in a water-collecting sump basin, commonly found in the basements of homes. … Usually hardwired into a home’s electrical system, sump pumps may have a battery backup.

A sump pump is a small pump installed in the lowest part of a basement or crawlspace. … Water flows into the sump pit through drains or by natural water migration through the soil. The sump pump’s job is to pump the water out of the pit and away from the building so the basement or crawlspace stays dry.