There are several reasons why a sewer system can back up, some of which include the following:
- Blockages: Blockages in the sewer line are a common cause of backups. This can happen due to foreign objects, such as wipes or sanitary products, being flushed down the toilet or poured down the drain. Tree roots can also grow into sewer lines, causing blockages.
- Pipe damage: Damage to the sewer line, such as cracks, breaks, or collapses, can cause backups. This can occur due to age, wear, and tear, or extreme weather conditions.
- Heavy rainfall or flooding: During heavy rainfall or flooding, the amount of water entering the sewer system can exceed its capacity, causing backups.
- Incorrect pipe installation: Improper installation of sewer pipes, such as insufficient slope or incorrect connections, can cause backups.
- Grease buildup: Grease and fats can solidify in the pipes, causing blockages and backups.