What Happens During a Sewer Camera Inspection? A Drain Specialist Explains
If you've never had a sewer camera inspection before, you may be wondering what actually happens during the process and whether it's worth the investment.
As the owner of Cornerstone Drain & Sewer, I believe sewer camera inspections are one of the most valuable tools available to homeowners. They allow us to see inside your drain and sewer lines without unnecessary digging, help us identify problems before they become emergencies, and give homeowners a better understanding of what's happening beneath their home.
The truth is that most homeowners rarely think about their sewer system until something goes wrong. Unfortunately, by the time a drain backs up or sewage enters the home, what could have been a simple maintenance issue may have turned into a costly repair.
Let's take a look at what happens during a sewer camera inspection, what we look for, and why I believe every drain cleaning should include one.
Why Do Homeowners Schedule Sewer Camera Inspections?
The most common reasons homeowners call us for a sewer camera inspection are:
Recurring drain clogs
Slow drains that keep coming back
Sewer line backups
Locating underground sewer lines
Finding cleanouts
Investigating suspected sewer line damage
Confirming a drain was properly cleared
Many homeowners assume their sewer system is working fine because they don't see it every day. In reality, sewer lines are often "out of sight, out of mind" until a problem develops.
One thing that surprises many homeowners is discovering that a sewer issue has been developing for months or even years without obvious symptoms.
What Happens During a Sewer Camera Inspection?
Every home is different, but our process is generally the same.
Step 1: Find an Access Point
The first thing we do is locate a cleanout.
A cleanout is an access point that allows us to enter the drain or sewer system without removing fixtures or making modifications.
If we cannot locate a cleanout, we can often access the system by:
Removing a toilet
Accessing the drain through a sink P-trap
Using another accessible entry point
Our goal is to enter the system with the least amount of disruption possible.
Step 2: Insert the Camera
We use a specialized sewer camera attached to a flexible cable that allows us to travel through the pipe while viewing the condition of the line in real time.
As the camera moves through the pipe, we're looking for anything that shouldn't be there and anything the pipe is doing that it shouldn't be doing.
Step 3: Inspect the Entire Line
During the inspection, we evaluate the overall condition of the system and look for potential problems such as:
Root intrusion
Standing water
Pipe bellies
Grease buildup
Hair and soap buildup
Construction debris
Offset joints
Separated pipes
Damaged fittings
Foreign objects in the line
Depending on the size of the home and how accessible the system is, the inspection may take anywhere from one hour to several hours.
Step 4: Review Findings
Homeowners are welcome to watch the inspection as we perform it.
Some choose to watch the monitor with us, while others prefer to review the recording afterward.
At Cornerstone Drain & Sewer, we provide recordings so homeowners can see exactly what we found inside their system.
What Problems Do We Find Most Often?
The answer depends on which part of the plumbing system we're inspecting.
Kitchen Drain Lines
The most common issue we see in kitchen drains is grease buildup.
Over time, grease accumulates inside the pipe walls and restricts flow. Eventually, food particles begin sticking to the buildup and create recurring clogs.
Bathroom Sink Drains
In lavatory sinks, we most commonly find:
Hair buildup
Soap residue
Soap curd accumulation
If the home's air conditioning condensate line ties into the bathroom plumbing, we may also find condensate-related buildup.
Main Sewer Lines
In our area, one of the most common issues we find in main sewer lines is a belly.
A belly occurs when part of the pipe settles and creates a low spot that holds water.
Once water begins collecting in that section of pipe, debris can accumulate, increasing the likelihood of recurring stoppages.
A Real Example: The Missing Cleanout That Caused a Backup
One inspection that stands out involved a homeowner who had lived in a newly built home for about five years.
The drain had backed up, and we were able to clear the blockage. At that point, many companies would have considered the job complete.
Instead, we ran a sewer camera.
While inspecting the line, we noticed something unusual. We found where the cleanout riser should have been, but we couldn't get the camera to turn upward into it.
That told us something wasn't right.
We excavated the area and discovered that during construction, the cleanout riser had been broken off and never repaired properly.
Over the years, dirt had slowly entered the pipe through the damaged section. Eventually enough dirt accumulated to create the blockage that caused the backup.
Without the camera inspection, the drain would have been flowing again, but the underlying issue would still have existed.
The homeowner likely would have experienced another backup later.
Sometimes the Best Result Is Finding Nothing
Not every camera inspection uncovers a major problem.
We were called to another home because a bathroom drain had backed up.
By the time we arrived, the drain had cleared itself.
The homeowner still wanted answers, so we recommended a camera inspection.
After thoroughly inspecting the system, we found no major issues.
There were a few minor observations, but nothing requiring immediate repair.
In that case, the value wasn't finding a major defect. The value was giving the homeowner confidence that their sewer system was in good condition.
Sometimes peace of mind is just as important as finding a problem.
What Can a Sewer Camera Inspection NOT Tell You?
One misconception is that sewer cameras can diagnose every plumbing problem.
While they're incredibly useful, they do have limitations.
Standing Water Can Block Visibility
If a pipe contains significant standing water due to a blockage or large belly, it may be difficult or impossible to see certain sections of the pipe.
Small Cracks Can Be Difficult to See
Minor cracks and early glue-joint failures aren't always visible.
In many cases, we don't discover these issues until the pipe begins separating or roots begin entering through the damaged area.
Vent Problems May Not Be Visible
A sewer camera generally cannot tell us whether a vent system is properly connected or sealed.
Additional testing may be required to diagnose certain venting issues.
This is one reason experience still matters. The camera is a powerful tool, but it is only one part of the diagnostic process.
Why We Run a Camera After Every Drain Cleaning
This is one area where my opinion differs from many companies.
I believe a sewer camera should be run every time a drain is cleared.
There are three reasons.
1. It Confirms the Drain Is Actually Clear
Just because water is flowing doesn't necessarily mean the obstruction is completely gone.
A camera allows us to verify the line is open and functioning properly.
2. It Helps Identify the Cause
Was this simply a one-time clog?
Or is there a belly, root intrusion, damaged pipe, or buildup causing recurring issues?
Without a camera inspection, we're often guessing.
3. It Helps Educate Homeowners
One of the most important parts of our job is helping homeowners understand what's happening inside their plumbing system.
When homeowners can see the problem for themselves, they can make informed decisions about maintenance, repairs, and future planning.
When Should You Schedule a Sewer Camera Inspection?
In my opinion, homeowners should strongly consider regular sewer camera inspections if they already know they have issues such as:
Root intrusion
Pipe bellies
Recurring backups
Known sewer defects
Regular inspections allow us to monitor those conditions and determine whether maintenance is actually needed.
Rather than performing maintenance on a fixed schedule and hoping for the best, we can evaluate the condition of the system and make recommendations based on what we actually see.
That saves homeowners money and helps avoid unnecessary work.
The Most Important Thing Homeowners Should Remember
If there's one thing I hope homeowners take away from this article, it's this:
Drain and sewer systems require maintenance.
Most people don't think about them because they work quietly in the background.
But when problems develop, the damage can be significant and expensive.
Regular inspections, routine maintenance, and early intervention allow homeowners to catch issues before they become emergencies.
Whether we're finding a hidden construction defect, monitoring a known belly, checking for roots, or simply confirming everything looks good, a sewer camera inspection gives homeowners information they can't get any other way.
And when it comes to protecting your home, information is one of the most valuable tools you can have.
Need a Sewer Camera Inspection in Montgomery County?
Cornerstone Drain & Sewer provides professional sewer camera inspections throughout Conroe, The Woodlands, Spring, Magnolia, Montgomery, Willis, Tomball, Cypress, Porter, and New Caney.
Whether you're dealing with recurring clogs, a recent backup, or simply want to understand the condition of your sewer system, we're here to help you find the problem, explain your options, and help you make the best decision for your home.
Clear the Problem. Fix It Right.
