According to the American Society of Home Inspectors, more than 60 percent of American homes suffer from below-ground wetness [source: Basement Systems]. But even more homeowners are likely to have to deal with a flooded basement at some point. It doesn’t take much water to cause thousands of dollars of damage. A moist basement can also lead to mold and mildew growth, bringing with it all its related health and breathing hazards. Source: http://home.howstuffworks.com/home-improvement/plumbing/sump-pump.htmA sump pump can help protect your investment and personal property from water damage. Learn how it works below.