When Drain Cleaning Isn’t Enough

SEWER LINE EXCAVATION IN THE DENVER AREA

Clogged drains are one of the most common plumbing issues homeowners face. In many cases, a professional drain cleaning is all it takes to get things flowing again. But what happens when drain cleaning just isn’t enough and the problem keeps coming back?

If you’re dealing with frequent clogs, slow drains, or recurring backups, the issue may go deeper than a simple blockage. In some cases, excavation is necessary to fully resolve the problem.

What Is Sewer Line Excavation?

Excavation is the process of digging into the ground to access underground plumbing pipes, typically your main sewer line. This allows technicians to inspect, repair, or replace damaged sections of pipe that can’t be fixed from the inside.

While it may sound like a big step, excavation is sometimes the most effective way to permanently solve serious drainage issues.

If you’re not sure whether excavation is necessary, a professional inspection can help determine the condition of your sewer line. At Brothers, we use camera inspections to give homeowners a clear, real-time look at what’s going on underground.

When Do You Need Excavation?

Not every drain problem requires digging. However, there are a few clear signs that your issue may go beyond standard drain cleaning:

Frequent Drain Clogs – If you’re calling for drain cleaning multiple times a year, it’s likely there’s an underlying issue. Temporary fixes clear the blockage, but they don’t address the root cause.

Tree Root Intrusion – Tree roots are one of the most common causes of sewer line damage. Roots naturally seek out moisture and can enter tiny cracks in your pipes. Over time, they grow and expand, blocking water flow and damaging the pipe itself.

Even if roots are cleared during a drain cleaning, they will continue to come back unless the damaged pipe is repaired or replaced.

Collapsed or Damaged Sewer Lines – Pipes can crack, shift, or collapse due to age, soil movement, or heavy impact above ground. When this happens, water flow is restricted or completely blocked.

Sewage Backups – If wastewater is backing up into your home, especially in multiple drains, it could indicate a serious issue with your main sewer line. This is more than an inconvenience. It’s a health hazard and should be addressed quickly.

Why This Is Common in Denver Metro Homes

Here in the Denver Metro area, sewer line issues aren’t just bad luck, they’re often tied to our environment.

Tree Roots Love Your Pipes – Neighborhoods across the Denver Metro area are full of mature trees like cottonwoods, maples, and ash trees.

These trees have aggressive root systems that actively seek moisture. Your sewer line becomes a target, especially if it has even the smallest crack.

Soil Movement & Freeze-Thaw Cycles – The soil throughout the Denver Metro area expands and contracts with temperature swings. Freeze-thaw cycles in winter can cause:

• • Pipe shifting
• • Cracks or separations
• • Gradual line collapse

Over time, this movement puts stress on underground pipes, especially older systems.

Older Homes = Higher Risk

Many homes in the Denver Metro area were built decades ago using materials more vulnerable to damage and deterioration. If you’re experiencing any of these signs, it may be worth having a professional take a closer look. The team at Brothers can help identify the issue and walk you through the next steps so you know exactly what to expect.

Mainline Pipe Types

Older Pipe Materials That Are More Vulnerable

If your home is older, your sewer line material could be part of the problem.

Clay (Vitrified Clay Pipe)

• • Common in homes built before the 1970s
• • Prone to cracking and joint separation
• • Easily infiltrated by tree roots

Cast Iron

• • Used from the early 1900s through the 1970s
• • Corrodes and rusts over time
• • Interior roughness can catch debris and cause clogs

Orangeburg (Bituminized Fiber Pipe)

• • Used between the 1940s and 1970s
• • Made from compressed wood pulp and tar
• • Highly prone to collapsing and deformation
• • Typically requires full replacement

PVC (SDC/SDR)

• • Widely used from the 1970s to present in modern sewer and drain systems
• • Made from Polyvinyl chloride. They are a durable, corrosion-resistant plastic
• • Often white or green plastic pipe with smooth walls

If you’re unsure what type of pipes your home has, a camera inspection can provide a clear answer. Brothers can help identify your pipe material and condition so you can make an informed decision.

Repair vs. Replacement: What’s the Difference?

Once the issue is identified, there are typically two paths forward:

REPAIR – If the damage is isolated, excavation can be used to access and fix a specific section of pipe.

REPLACEMENT – If the pipe is severely deteriorated or has widespread damage, replacing the entire sewer line is often the best long-term solution.

How Much Does Sewer Line Excavation Cost?

Let’s talk numbers, because this is usually the first question homeowners have.

The cost of sewer line excavation varies depending on several factors, including the depth of the pipe, location, and extent of the damage.

Typical Cost Ranges in the Denver Metro Area

• • Minor spot repair: $1,500 – $4,000
• • Main sewer line replacement: $5,000 – $15,000+
• • Complex jobs: $15,000 – $25,000+

What Impacts the Cost?

• • Depth of the sewer line
• • Length of pipe needing repair or replacement
• • Accessibility (under driveways, landscaping, etc.)
• • Soil conditions
• • Permit requirements

Can You Avoid Excavation?

In some cases, yes. Trenchless options like pipe lining or pipe bursting may be possible.

However, excavation is still necessary when:

• • Pipes have collapsed
• • Severe root damage is present
• • The line is significantly misaligned

The Bottom Line

Drain cleaning is a great first step when you’re dealing with a clog. But if problems keep coming back, it may be a sign of something deeper.

Excavation allows plumbers to access and fix the root of the issue, whether that’s invasive tree roots, a broken pipe, or a failing sewer line. While it’s a bigger job, it’s often the solution that restores your plumbing system for the long run.

Still Dealing With Recurring Drain Issues?

A professional camera inspection can help identify what’s really going on inside your sewer line. If you’re dealing with recurring issues, having a clear understanding of the problem is the first step toward a long-term solution.

If you need a second opinion or want to get ahead of a bigger issue, Brothers can help you get answers and a clear path forward.

Frequently Asked Questions (FAQs) About Sewer Line Excavation and Drain Issues

1. How do I know if my sewer line needs excavation?

Frequent drain clogs, slow drains, recurring backups, or tree root intrusion are all signs that your main sewer line may have a deeper problem. A camera inspection can pinpoint the issue. Brothers can help identify whether excavation or a repair is the right solution.

2. Can drain cleaning fix recurring clogs permanently?

Drain cleaning is effective for minor blockages, but if clogs keep coming back, the root cause may be damage in your main sewer line. Excavation or pipe repair may be needed to fully resolve the problem. Brothers can help assess your situation and recommend the best next steps.

3. How much does sewer line excavation cost in the Denver Metro area?

Costs vary based on pipe depth, accessibility, and the extent of damage. Minor repairs typically range from $1,500–$4,000, while full main line replacements can range from $5,000–$15,000 or more. Brothers can provide a clear estimate for your home after an inspection.

4. Are there alternatives to excavation?

Yes. Trenchless methods like pipe lining or pipe bursting can sometimes fix damaged lines without digging a trench. However, excavation is often necessary when pipes have collapsed or roots have caused significant damage. Brothers can help determine which approach is right for your home.

5. Why do Denver Metro homes have so many sewer line problems?

The combination of mature tree roots, freeze-thaw soil cycles, and older building materials makes homes in the Denver Metro area more prone to sewer line issues. Clay, cast iron, Orangeburg, and galvanized steel pipes are especially vulnerable over time. Brothers has experience navigating these local challenges.

6. How long does a sewer line excavation take?

The timeline depends on the complexity of the job, pipe material, and access to your yard or driveway. Minor repairs may be completed in a day or two, while full line replacements can take several days. Brothers can give you a realistic timeline after inspecting your system.

7. Can excavation prevent future clogs?

Yes. Repairing or replacing damaged pipes eliminates the root cause of recurring clogs and backups, giving you long-term peace of mind. Brothers can help prevent future issues by addressing the problem at its source.

Who should I call for excavation service in Denver?

Call Brothers Plumbing, Heating & Electric at (303) 468-2294 or visit our excavation service page to get started.