Sewer Line Replacement Costs: What You Need to Know

Sewer lines are essential to any plumbing system, carrying wastewater from your home to the main sewer line. However, over time, these lines can become damaged or clogged, leading to the need for replacement. In this article, we will discuss everything you need to know about sewer line replacement costs, including factors that can affect the price, signs that you may need a replacement, and how to contact Mainline Water & Sewer for assistance.

Damaged pipe
Graphic of leaking pipe

Understanding Sewer Line Replacement

What is a Sewer Line Replacement?

A sewer line replacement involves removing and replacing the existing sewer line with a new one. This process is typically necessary when the current sewer line has become damaged or is no longer functioning correctly.

Signs You May Need a Sewer Line Replacement

Some common signs that you may need a sewer line replacement include the following:

  • Slow-draining sinks or toilets
  • Foul odours coming from drains
  • Gurgling noises in pipes
  • Water backing up into sinks or toilets

Causes of Sewer Line Damage

Several factors can contribute to sewer line damage, including:

  • Age of the sewer line
  • Tree root intrusion
  • Corrosion
  • Shifting soil or ground settling
  • Clogs caused by grease, hair, or other debris

Factors That Affect Sewer Line Replacement Costs

Length of Line

The length of your sewer line will significantly impact the overall replacement cost. The longer the line, the more materials and labour will be required, which can increase the price.

Type of Pipe

The type of pipe used for the replacement can also affect the cost. PVC pipe is typically the cheapest option, while more durable materials like cast iron can be more costly.

Access to the Line

Access may require additional time and effort if the sewer line is located in a hard-to-reach area, which can add to the overall cost.

Location of the Line

The location of the sewer line can also impact the cost of replacement. If the line is located near a road or other obstacles, it may require additional permits and equipment to complete the replacement.

How Much Does Sewer Line Replacement Cost?

The sewer line replacement cost can vary significantly based on several factors, including those listed above. On average, homeowners can expect to pay anywhere from $3,000 to $7,000 for a complete replacement.

How to Choose a Sewer Line Replacement Contractor

The sewer line replacement cost can vary significantly based on several factors, including those listed above. On average, homeowners can expect to pay anywhere from $3,000 to $7,000 for a complete replacement.

Contact Mainline Water & Sewer for Sewer Line Replacement Services

If you need sewer line replacement services, Mainline Water & Sewer can help. Our team of experts has the experience and equipment necessary to complete your replacement quickly and efficiently. Contact us today for more information or to schedule a consultation.


Sewer line replacement can be costly and complex, but it’s essential to maintain the functionality of your plumbing system. By understanding the factors affecting the replacement cost and working with a reputable contractor like Mainline Water & Sewer, you can ensure your replacement is completed successfully and without surprises.


How long does sewer line replacement typically take?

The length of time required for sewer line replacement can vary depending on several factors, including the length of the line, the type of pipe used, and the line’s location. On average, the process can take anywhere from a few days to a few weeks.

Does insurance cover sewer line replacement?

Sewer line replacement may be covered by your homeowner’s insurance policy, depending on the cause of the damage. It’s important to check with your insurance provider to understand your coverage options.

Can sewer line damage be repaired instead of replaced?

In some cases, sewer line damage can be repaired instead of replaced. However, this will depend on the damage’s extent and the issue’s location. A professional plumber can help determine whether repair or replacement is the best option.

Can I perform sewer line replacement myself?

Sewer line replacement is a complex and potentially dangerous process that a trained professional should only perform. Attempting to perform this work yourself can result in serious injury or further damage to your plumbing system.

How can I prevent sewer line damage in the future?

Regular maintenance and care of your plumbing system can help prevent sewer line damage. This includes avoiding flushing inappropriate items down the toilet, properly disposing of grease and other waste, and having your system inspected and cleaned regularly by a professional plumber.