The discharge line should be buried at a depth that is at least a foot below the top of the check valve. This can be a tricky proposition, as you don't want to overdo it, but the best way to do this is to do a little research. Instead, it should be at least 22 inches deep. But if your pump fails, you could end up with significant flooding. In addition, a pump helps prevent mold growth, which can damage walls and warp wood. You can pay to have a professional do the job, or you can do it yourself. Having a sump pump installed can cost hundreds or even thousands of dollars, depending on your location.