The most common cause of sanitary sewer backup is cooking grease and roots that block flow. Other common causes of backup include foreign items that have been disposed of in the sanitary sewer drains such as:
- Baby wipes
- Paper products (other than toilet paper)
Problems surface when the smaller laterals become blocked with roots, grease, sediments, or a collapsed pipe. When the flow becomes blocked, untreated waste water can back up into your home.