This is especially useful if you have a crawl space or a basement. Install Sump Pump In Existing Basement: The addition of a sump pump to your home is a useful way to prevent flooding and water damage. Sump pumps are a common solution for wet basements. However, this is not always possible. Otherwise, the check valve could break. If you are looking to install a new sump pump, check with your local sump pump company for recommendations.