Sewer Line Replacement: Signs and Your Options
A sewer line replacement is the process of removing an old or damaged underground pipe and replacing it with one made from modern materials to support proper wastewater removal. You may need sewer line repair or replacement if you’re experiencing recurring backups and have old pipes common in homes built before the 1980s.
The price of sewer line replacement depends on the method used, pipe material, and length. Trenchless options are popular to prevent digging yards, driveways, or landscaping, and the associated restoration costs.
Dauenhauer specializes in sewer line replacement in Central Kentucky and conducts HD camera inspections to determine the best method for the job.
We’re going to share the most common signs you need a sewer line replacement, pipe materials and their lifespans, the replacement process, and more.
Signs You Need a Sewer Line Replacement
There are many signs that indicate you may need a sewer line replacement, including frequent clogs, slow drains, and sinkholes in the yard. It’s important to understand the signs of sewer line issues, so you know when to call a professional plumbing service.
- Frequent clogs or backups
- Sewage odors
- Slow drains throughout the house
- Soggy or sunken spots in the yard
- Cracks or leaks visible on pipe
- Old pipe from pre-1980s home
If you notice multiple signs together, it usually means that replacement is necessary, and that sewer line repair isn’t sufficient. Knowing when to replace a sewer line helps prevent unnecessary frustration from recurring plumbing issues.
Sewer Pipe Materials & How Long They Last
Sewer lines can be made from various materials, each with their own lifespan and characteristics. Understanding the type of sewer line material in your home is essential when determining if replacement is necessary.
| Material | Lifespan | Notes |
| PVC | 50–100+ yrs | Standard in modern construction; corrosion-proof |
| Cast iron | 75–100 yrs | Common pre-1960s; eventually corrodes from the inside |
| ABS plastic | 50+ yrs | Durable, corrosion-resistant plastic |
| Clay | 50–60 yrs | Pre-1960s homes; obsolete; prone to root intrusion |
| Orangeburg | 10–50 yrs | 1860s–1970s; wood-fiber + tar; replace on sight |
In Louisville and Lexington, Kentucky, many homes still have cast iron, clay, or Orangeburg lines that should be replaced with PVC sewer pipe.
Repair or Replace? Trenchless vs. Traditional
There are various considerations to make when it comes to deciding whether to repair vs. replace a sewer line.
| Factor | Trenchless | Traditional (dig & replace) |
| Digging | Minimal (1–2 access points) | Full trench along the line |
| Yard/driveway | Largely preserved | Significant restoration needed |
| Timeline | Often 1 day | 1–3+ days |
| Best when | Existing line is intact enough to line/burst | Pipe is collapsed, badly misaligned, or bellied |
There are also two methods for sewer line repair and replacement: trenchless and traditional open-cut excavation.
Trenchless sewer line replacement can be done via pipe lining or pipe bursting. Trenchless pipe lining is when a flexible pipe coated in resin is pulled or blown into an existing sewer line, then cured to create a jointless inner pipe. Trenchless pipe bursting is when a bursting head is pulled through an existing pipe to fracture the material while a new pipe is simultaneously pulled into place.
The traditional dig-and-replace method is much more disruptive to properties and can result in significant restoration costs for driveways, yards, or landscaping. However, the traditional method may be used in cases where the pipe has fully collapsed or severely bellied.
A Dauenhauer plumber will assess your pipes through a camera inspection to determine if they’re eligible for trenchless sewer line replacement.
The Replacement Process & Timeline
The sewer line replacement process is rather straightforward. We’ll explain the five-step process Dauenhauer takes below.
1. Inspect
First, we conduct a camera inspection to identify the condition of your sewer line and location of pipe damage. This helps us determine which replacement method will work best.
2. Gather Permits
A plumbing construction permit from the Kentucky Division of Plumbing is required to replace or install a new sewer line. Our team will handle the permitting and inspection process.
3. Repair or Replace
Depending on the condition of your pipes and the location and extent of the damage, we will decide whether to repair or replace the line. We will use trenchless methods, if possible, and traditional open-cut excavation for cases in which the pipe has fully collapsed.
4. Test functionality
After the repair or replacement, we will do another camera inspection to ensure the job is completed successfully. Then we will test functionality to make sure that wastewater can properly flow from your home to the sewer.
5. Restore Property
We will leave your property the way that we found it and complete or organize restoration of driveways, lawns, and landscaping if needed.
How long does sewer line replacement take? The typical timeline is one to three days and often even faster when trenchless methods are used.
Why Choose Dauenhauer for Sewer Replacement?
Wondering what makes Dauenhauer the right choice for sewer line replacement in Louisville, KY?
Local Service Area
Dauenhauer has served homeowners in Louisville, Lexington, Shelbyville, and Elizabethtown, KY since 1958. Our licensed plumbers live locally and offer a wealth of experience servicing homes in local communities.
Camera Inspection Diagnosis
We always start with a sewer line camera inspection to diagnose the issue and whether repair or replacement is needed. Our HD sewer cameras give us a clear view of the inside of your pipes.
Trenchless Capabilities
We’re proud to offer trenchless sewer line repair and replacement options to eligible homeowners. We will assess your pipes to see if trenchless methods are suitable for the job.
Flexible Financing
Dauenhauer offers customers flexible financing options through Upgrade to help space out paying for costly services.
24/7 Emergency Availability
Since our plumbers live and work locally, we offer 24/7 emergency plumbing repair services. Give us a call anytime when plumbing issues cannot wait.
Call Dauenhauer at (502) 272-9837 or schedule online today for professional sewer line replacement services!
Frequently Asked Questions
What are the signs you need a sewer line replacement?
The major signs you need a sewer line replacement are recurring clogs and sewage backups, persistent sewer odors, slow drains throughout your home, and soggy patches in your yard. If you notice multiple signs together, especially in a home built before 1980, the pipe typically has deteriorated enough to replace vs. repair.
What is trenchless sewer line replacement?
Trenchless sewer line replacement is used to replace an underground pipe with little to no digging. It uses either pipe lining (a resin liner cured inside the old pipe) or pipe bursting (a new pipe pulled through while the old is fractured). Trenchless methods cost less in yard, landscaping, or driveway restoration than traditional excavation and can often be completed in a single day, making them preferred when the existing line is accessible.
How long does a sewer line last?
The longevity of a sewer line depends on its material. For instance, PVC lasts 50 to 100+ years, cast iron lasts 75 to 100 years, clay lasts 50 to 60 years, and Orangeburg lasts as few as 10 to 50 years. Many older homes in Louisville and Lexington still have cast iron, clay, or Orangeburg lines that need replacement.
How long does sewer line replacement take?
Sewer line replacement typically takes one to three days, while complex jobs with long runs, deep pipes, or driveways and landscaping in the path can take longer. Trenchless methods are usually faster because they require less digging and restoration.
