What You Need to Know About Sewer Line Repair 

Your home sewer line connects your home plumbing to the local sewer system and directs water flow from your home into the city’s sewer structure. Damaged sewer lines can lead to dangerous home plumbing and structural issues, including foundation cracks and sewage backups. Unfortunately, sewer line damage often only becomes clear several months after the original deterioration began. 

Proactive sewer line analysis and repair can help prevent further line issues and protect your family. Learn to protect your home’s sewer system and sewer lines with this latest guide to sewer line repair. 

The Most Common Sewer Line Repair Issues

Pipe Corrosion

Sewer pipe corrosion occurs when moisture and bacteria from waste leaving the home form sulfuric acid and other chemicals that can break down pipe materials such as plastic and copper over time. 


Sewer line blockages result from the flushing of items that fail to break down and settle within the line. Consumer products such as baby wipes, diapers, and tampons can build up and cause a debris blockage in your sewer line.

Foul Smell

A foul smell from the sewer line is usually related to clogs deep within the sewer system. Most home sewer line odour comes from rarely used showers and bathtubs in the family home.

Sewer Line Shifting

Your sewer line may shift with age or due to environmental factors such as excess rainwater. This shifting primarily occurs at the joints connecting the sewer pipes and stops the optimal sewage flow away from the home. 

Tree Roots

Plumbers often discover tree roots to be the source of sewer line issues. When tree roots search for moisture, they can break through the sewer line and cause the entire structure to fail. Tree root removal and line repair are complex and require sewer line experts with decades of project experience.

Do I Need Sewer Line Repair or Sewer Line Replacement?

Your plumber can help you make the determination between the repair of your sewer line and a replacement of the sewer connection. Factors to consider when reviewing sewer line replacement versus line repair options with your plumber include the following:

  • The Extent of Damage to the Pipe

If the extent of the damage to the sewer pipe is significant and the time to repair the damage would require a cost more than replacement, your plumber will recommend a line replacement. 

  • The Location of the Damage

Another critical factor in deciding between line repair or replacement is the location of the damage. For example, a leak and structural issue near the home foundation may require line replacement.

  • The Sewer Line Material

Your plumber may recommend the replacement of a clay sewer line with cast iron to provide a higher level of durability. Clay sewer lines are highly vulnerable to tree roots and may require replacement in the near future.

  • The Presence of Tree Roots

While plumbers may be able to repair a section of a sewer line impacted by tree roots, the roots will find their way back into the line if the connected line remains in place. The level of tree root damage and the potential for intrusion in the near future are critical considerations when evaluating repair versus replacement options.

What is the Average Cost of Sewer Line Repair?

The average Canadian homeowner can expect to pay $3000 to $6000 for sewer line repair work. This cost depends on the location of the sewer line damage and the extent. Complete sewer line replacement costs, on average, between $6000 and $10,000, depending on the complexity of the line repairs. 

Before moving forward with your repair, contact your home insurance company to analyze your coverage levels. You may discover your homeowner’s insurance policy covers the total cost or a large portion of the sewer line work.

Call Thunderbird Plumbing for Sewer Line Services

Our experienced plumbers can analyze sewer line problems and provide clear insights and expert knowledge to pinpoint sewer line repair symptoms and offer an effective solution. We can visit your property with short notice for urgent sewer line repairs in the Greater Victoria region. Simply call our office today to connect with our licensed plumbers.


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