A sump pump is an appliance that is used to help prevent flooding in your home. If youโre in a flood zone and your basement floods regularly, if you have older plumbing, or if you just want to take a proactive step against flooding, then a sump pump installation is right for you. Sump pumps help prevent flood damage in your home by detecting increasing water pressure or water levels. If high levels are detected, the sump pump will pump water out of your basement and away from your home to a better location like a storm drain or a well.