(204) 414-1877 | Open 24/7, Free Estimates & Senior Discounts Are Available

Sewer lines are an essential part of any property’s plumbing system, responsible for carrying wastewater away from your home to the main sewer line or septic tank. But like any other component of your home, sewer lines have a lifespan. How long can you expect your sewer line to last, and what factors influence its longevity?

Understanding Sewer Line Lifespan

The lifespan of a sewer line can vary depending on several factors, including the material of the pipe, environmental conditions, and maintenance practices. Here’s a closer look at some common sewer line materials and their typical lifespans:

Cast Iron Pipes

Cast iron pipes were commonly used in older homes. While they are durable, they are susceptible to corrosion over time. On average, cast iron sewer lines can last 50 to 100 years with proper care.

Clay Pipes

Clay sewer pipes have been used for centuries due to their durability and resistance to tree root intrusion. Properly maintained clay pipes can last up to 100 years or more.

PVC Pipes (Polyvinyl Chloride)

PVC (polyvinyl chloride) pipes are popular for modern sewer line installations. They resist corrosion and tree root intrusion and can last over 100 years.


Orangeburg pipes, made from wood fibre and pitch composite, were commonly used in mid-20th-century homes. However, they are prone to deterioration and can fail prematurely, with a lifespan of around 50 years or less.

Factors Influencing Sewer Line Longevity

Several factors can impact the lifespan of your sewer line:

  • Material Quality

The quality of the materials used in the sewer line installation plays a significant role in its longevity. High-quality materials and proper installation can extend the lifespan of the sewer line.

  • Soil Conditions

Soil conditions, such as acidity and moisture levels, can affect the integrity of the sewer line. Highly acidic soils can corrode certain pipe materials, leading to premature failure.

  • Tree Roots

Tree roots are a common cause of sewer line damage. As trees grow, their roots can infiltrate sewer lines, causing cracks, blockages, and failure.

  • Maintenance

Regular maintenance, including inspections and cleaning, can help prolong the life of your sewer line. Identifying and addressing issues early can prevent them from escalating into costly repairs.

Signs of Sewer Line Problems

Knowing the warning signs of sewer line issues can help you address problems before they worsen. Look out for the following signs that indicate you may need sewer line repair or replacement:

  • Foul Odours

Sewer odours from drains or the yard can indicate a sewer line leak.

  • Slow Drains

Persistent slow drains throughout your home may signal a blockage or clog in the sewer line.

  • Backups

Sewage backups in sinks, toilets, or tubs clearly indicate a sewer line blockage or malfunction.

  • Lush Patches of Grass

Unexpectedly, lush or soggy patches of grass in your yard can indicate a sewer line leak.

Transform Your Plumbing Woes into Peace of Mind with Aslan Plumbing

Experience a seamless solution to your plumbing needs with Aslan Plumbing. Our team of expert plumbers in Winnipeg is ready to tackle any issue, from routine maintenance to emergency repairs. Don’t let plumbing problems disrupt your life. Contact us to get our services!