Sewer Replacement
Sewer Line Replacement in Denver, CO
Bell Plumbing, Heating, Cooling & Electrical has provided sewer line replacement in Denver since 1926. When a sewer line is too damaged to repair, replacing it keeps the failure from disrupting your home and putting your family's health at risk. Sewer lines break down over time from age, root intrusion, and corrosion.
We start with a camera inspection to confirm that replacement is really necessary, then use trenchless or traditional methods to replace your line quickly and reliably.
Reach out to our Denver drain and sewer experts to learn more!
Call (303) 731-5469
What Our Customers Are Saying

Signs You Need Sewer Line Replacement in Denver
Persistent drain problems often point to trouble in the sewer line. These are the signs to watch for:
- Backed-up toilets and drains: sewage backing up into sinks, tubs, or showers
- Frequent clogs and slow drains: in more than one sink, tub, or toilet, or clogs that keep coming back
- Sewage odors: bad smells coming from your drains or yard
- Gurgling sounds: strange gurgling or bubbling from your drains
- Lush grass patches: unusually lush, green patches in your yard, especially near your sewer line
- Foundation cracks or sinkholes: a broken sewer line can damage your foundation or cause sinkholes
- Increased water bills: a sudden rise with no obvious explanation
If you're seeing these signs, call us. It may be a repair or a cleaning instead of a replacement, and we'll tell you honestly which it is.
Book OnlineCommon Reasons for Denver Sewer Line Replacement
Sewer lines in Denver are replaced for a handful of reasons:
- Aging Infrastructure: A lot of homes have sewer lines made of clay, cast iron, or Orangeburg pipes, which can break down and fall apart over time.
- Persistent Blockages: If you have frequent and serious blockages that you can’t get rid of by cleaning or snaking, you may need a whole new drain.
- Extensive Damage: A sewer line needs to be replaced if it has a lot of cracks, breaks, or other damage to its structure that makes it unsafe.
- Tree Root Invasion: Often, the only way to fix a sewer line that has been damaged by tree roots is to replace the damaged part.
- Freeze-thaw stress: Denver's winters add stress to aging pipe and joints.
Replacement is a big decision, so we confirm it's necessary before recommending it.

Our Denver Sewer Line Replacement Methods
We use modern trenchless and traditional methods, and choose the one that fits your line and your yard:
- Trenchless replacement: a new pipe is installed with little digging, which limits damage to your landscaping, driveway, and walkways. Methods like pipe bursting pull a new pipe through the path of the old one.
- Traditional excavation: we dig a trench to remove the old line and install a new one. It's sometimes necessary depending on the pipe's condition and location.
The camera inspection tells us which methods are possible for your line. We'll explain the options, the scope of work, and an upfront price before we start.
Benefits of a New Sewer Line in Denver
- A fresh start: modern PVC resists corrosion and root intrusion better than the older materials it replaces
- Fewer backups and emergencies: a sound line means fewer clogs and surprises
- Protection for your home: a failing line can damage your foundation and yard
- A long-term fix: replacement ends the cycle of repeated repairs and cleanings
If you're tired of repairing the same line, a replacement may be the better investment. Call us and we'll help you decide.
Call (303) 731-5469Our Denver Sewer Line Replacement Process
When you schedule sewer line replacement with us, here's what to expect:
- Camera Inspection: We inspect your line to confirm the damage and see whether replacement is necessary. See sewer inspections.
- Recommendation and Quote: We explain your options and give you an upfront price before any work begins.
- Planning: We choose the method that fits your line and your yard.
- Replacement: Our licensed plumbers install your new sewer line using trenchless or traditional methods.
- Testing: We confirm the new line is working properly before we call the job done.
You'll know what we found, what we did, and what to expect from your new line.
Expert Tips
Sewer Line Replacement Costs in Denver
The cost of sewer line replacement depends on the length and depth of your line, the pipe material, the replacement method, and how much of your yard needs to be restored. We provide an upfront price before any work begins. Replacement is a larger investment, so financing is available through GreenSky. Bell Perks Club members also receive 20% off service work.
Denver Sewer Line Replacement FAQs
Signs include backups in more than one drain, frequent clogs, sewage odors, gurgling, lush patches in your yard, and cracks or sinkholes. A camera inspection shows us whether the damage is limited to one area, which a repair can fix, or runs along the line, which may call for replacement.
Cast iron was used in the early 1900s, clay until the 1960s, and Orangeburg from the 1940s to the 1970s. Modern lines are PVC.
The cost depends on the length and depth of the line and the replacement method. We provide an upfront price after inspecting your line.
It depends on the length and depth of your line, the pipe material, the method, and how much restoration is needed. We give you an upfront price before any work begins.
Yes. Financing is available through GreenSky. See our financing page.
Trenchless methods install a new pipe with little digging. Traditional replacement involves digging a trench to remove the old line. We'll explain which fits your situation after the camera inspection.
Trenchless methods limit damage to your yard, driveway, and walkways. Traditional excavation involves more digging. We'll explain what to expect for your line before we start.
It depends on the material and conditions. Older cast iron, clay, and Orangeburg lines fail sooner than modern PVC. See our How Long Will My Sewer Line Last? blog post for more information!
Sometimes. If the damage is limited to one section, sewer repair may be enough. A camera inspection tells us.
Sewer issues between your house and the sewer main are typically the homeowner's responsibility. If you're unsure, give us a call and we can help.
If the problem is buildup from corrosion rather than damaged pipe, hydro jetting can scour the line without digging. We'll check with a camera before recommending a replacement.
Same-day service is often available. Call or book online and we'll find the soonest appointment.
Why Choose Bell Plumbing, Heating, Cooling & Electrical for Sewer Line Replacement in Denver
Bell Plumbing, Heating, Cooling & Electrical has replaced failing sewer pipe in Denver since 1926, through every material era the metro has seen: cast iron, clay, Orangeburg, and modern PVC. Our licensed master plumbers work under Colorado Master Plumbers License MP.00600078 and explain your trenchless and traditional options in plain terms, so you're never sold a full replacement you don't need. We're BBB A+ accredited (since 1983), a 2025 and 2026 ColoradoBiz Best of Colorado Business Choice winner, and an official partner of the Cherry Creek and Douglas County school districts. From our Centennial headquarters, we serve Denver and the surrounding metro area.
Book OnlineGet Professional Sewer Line Replacement in Denver
Don't let a deteriorating sewer line put your home at risk. Call Bell Plumbing, Heating, Cooling & Electrical to find out if sewer line replacement is the right solution. We'll provide a professional assessment, efficient replacement, and a sewer system that's built to last.
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