Usually, your sewage pump has a discharge line that's attached to the sewer or outside of your property. Perimeter Drain Sump Pump Montclair: The sump pump is a vital part of the basement waterproofing equation. Next, backfill the area with loose stone. However, hiring a professional is the best way to get the job done. But if your pump fails, you could end up with significant flooding. Fortunately, it's a relatively simple process to retrofit your home. You should also consider the type of pump that you are installing. There are a few different ways to go about it.