When and How to Replace a Sewer Line

Residential sewer lines rarely fail overnight. Most residential systems show progressive warning signs before structural collapse. Detecting that your sewer line needs replacement early can help keep costs lower and protect your property from unnecessary damage.

How do you know it’s time to replace a sewer line, and how does sewer line replacement work? We’ll share top warning signs your sewer line may need replacement and give a high-level overview of the process, so you know what to expect.

Signs It May Be Time to Replace a Sewer Line

Typically, there will be many warning signs that precede full on sewer line collapse. If you’ve noticed any of these signs, you might consider calling for a sewer line camera inspection.

• Recurring backups: If you experience drains backing up even after being cleared, the issue may lie deeper in the main sewer line. In many Las Vegas homes, recurring backups can signal tree root intrusion or pipe deterioration.
• Multiple drains failing at once: If multiple drains in your home are clogged at once, it often points to failure or blockage in the main sewer line. Those with old underground plumbing systems may notice this sign.
• Sewage odors: When a pipe has cracked or is leaking, sewer gases can escape and be noticeable inside or outside the home. If you smell foul sewage odors, it can be a sign that your sewer line is getting ready to fail.
• Yard wet spots: Wet spots or random lush patches in the yard can indicate that your sewer lines are leaking underground. In the Las Vegas desert climate where irrigation is needed for lawns, wet areas can strongly indicate sewer line issues.
• Foundation cracks: When a sewer line leaks, it can erode the surrounding soil supporting your home’s foundation. This can cause cracks in walls or flooring over time.
• Aging clay or cast iron pipes: Older Las Vegas homes may still have clay or cast iron sewer pipes that deteriorate naturally over time. Sewer line replacement will become necessary as the materials corrode, crack, or collapse.

What Causes Sewer Lines to Fail?

Tree Root Intrusion

Sometimes, when there are small cracks in sewer lines, tree roots will grow into them looking for moisture. As the roots grow and expand, they can cause cracks to worsen and even block the flow of sewage. In Las Vegas neighborhoods with mature landscaping, roots can work their way into sewer pipes over time and cause failure.

Pipe Corrosion

Sewer pipes made from materials like cast iron can corrode and weaken over the years. Corrosion can lead to cracks, leaks, or complete collapse. Corrosion is one of the top reasons homes in Las Vegas need sewer line replacement.

Ground Shifting

When soil moves, it can place pressure on underground pipes, causing them to shift, crack, or separate at the joints. Natural soil settling and construction activity can often contribute to ground shifting and underground pipe damage.

Poor Installation

If sewer lines weren’t installed properly, issues could develop years later. Weak joints or improper pipe slope are two common issues that can lead to blockages, leaks, or premature failure.

High Water Table Conditions

When there’s excess water around sewer lines, it can put pressure on the pipes and soil. Fluctuating groundwater conditions in Las Vegas Valley can accelerate deterioration or cause soil shifting that can damage pipes.

Repair vs. Replacement: How Do You Decide

How do you know whether to repair or replace your sewer lines in Las Vegas? With trenchless repair options, you may be curious when you can get away with repairs vs. replacement.

Trenchless sewer line repair is designed to be less invasive and minimize disruption to yards and landscaping. However, if your sewer line is severely damaged or collapsed, it likely won’t be eligible for trenchless repair. Minor cracks may qualify for trenchless lining, but structural collapse requires excavation.

Getting a sewer line camera inspection will determine the scope of the project and give you an understanding of the damage. It will help professional plumbers diagnose if full sewer line replacement is required or if repairs will suffice.

How Sewer Line Replacement Works

Sewer line replacement involves a variety of tasks completed by professionals to safely remove damaged pipes and install new ones.

Inspection

First, a licensed plumber will generally complete an inspection using a high-resolution sewer line camera. They will snake the camera in through an access point to view the inside of the pipes underground. This allows them to locate the severity of the damage and how widespread it is.

Permits

Next, the professionals will work with local authorities to secure the proper permits for the job. In Las Vegas, sewer line replacement typically requires approval from municipal building departments to ensure work meets local plumbing codes and safety standards.

Excavation or Trenchless Method

Depending on the damaged pipe, the plumbers will either use traditional excavation to dig down and access the sewer line or the modern trenchless method. Some Las Vegas homes may qualify for trenchless sewer replacement, using small access points to replace the pipes with minimal disruption to the yard, driveway, or landscaping.

Pipe Replacement

The old sewer line is removed or relined with a new pipe system. Most modern replacement pipes are made from PVC or HDPE. These materials are resistant to corrosion and root intrusion, making them long-lasting options.

Backfill and Restoration

Once the new sewer line has been installed and tested, the excavated areas are filled back in and the property is restored. Restoration can include repairing landscaping, replacing soil, or restoring concrete or pavement that was removed during the replacement.

What Impacts Sewer Line Replacement Cost?

Sewer line replacement costs can be influenced by several different factors. It’s important to consider these factors when estimating the final cost of the project.

• Pipe depth: The deeper the sewer line, the more excavation will be required, which can increase the total cost of the project. Some sewer lines in Las Vegas will be several feet underground which can increase the equipment and labor needed.
• Length: The length of the pipe that needs replacing will directly impact the total cost. Longer sections will typically cost more than a short repair near the home.
• Yard obstacles: If your yard has landscaping features like trees, retaining walls, or irrigation systems, accessing the sewer line will be more complicated and time-consuming.
• Driveway removal: If your sewer lines run underneath your driveway, parts of the concrete will need to be removed to access the pipe. This can add extra labor and restoration costs.
• City permits: Permit costs in Las Vegas can vary depending on the scope of the sewer line replacement project.

Is It Better to Replace a Sewer Line Before It Collapses?

Yes, it is best to replace a sewer line before it fully collapses. This is because emergency costs can be much higher than normal replacement costs. Additionally, a collapsed sewer line can cause significant property damage and interior flooding.

To avoid interior flooding, you should watch for warning signs that your sewer line is deteriorating. Lastly, it is easier to schedule sewer line replacement in Las Vegas when there isn’t a condensed timeline.

When to Call a Professional in Las Vegas

If you notice any of the warning signs we mentioned, it’s an excellent idea to call a professional plumber like BEST Air Conditioning Plumbing Repair. BEST offers plumbing repair services, including water line repairs, to homeowners in Clark County. We even support homeowners with emergency plumbing services.

Contact BEST today by calling (702) 970-4911 or scheduling a sewer line camera inspection online. We’ll be able to assess the condition of your sewer lines and make a recommendation.