How a sewer camera inspection works
A push camera is a small lens and light on the end of a flexible rod, usually from 100 to 200 feet long. The plumber feeds it into the sewer line through a cleanout, which is the capped pipe stub outside the house, and pushes it toward the street while a monitor shows the picture. Most systems also record, so the video can be replayed later and shared.
Many cameras carry a built-in transmitter just behind the lens. A hand-held receiver above ground picks up its signal, so the plumber can mark the exact spot on the lawn or driveway and read the depth. That marking is what turns a picture of a crack into a place you can dig.
Ask the dispatcher what the visit includes. The plumber should explain in plain words what each problem means for the line, including whether it needs cleaning, repair or only watching.
What the camera can show you
Inside a sewer pipe, the camera is looking for a short list of things. Each one tells a different story about why a drain acts up.
- Tree roots entering at joints, which show up as pale hair-like masses
- A belly or low spot where the pipe has sagged and holds standing water
- An offset joint where two pipe sections no longer line up
- Cracks, broken sections or a collapsed pipe
- Grease buildup, scale or packed debris along the pipe wall
- Tie-ins where another line joins the main, and whether the connection looks clean
A belly is easy to miss without a camera. Water pools in the dip, solids settle out and the pipe clogs again every few months, no matter how often it is cleared. Roots are the other repeat offender, because they find the tiny gap at a joint and grow into a mat that catches paper.
What a camera cannot see
Honest limits are part of the job. A camera shows the inside of the pipe it can reach, nothing more.
It cannot see inside walls or under a slab where there is no access point. It cannot get past a full blockage, so a line that is completely stopped usually needs clearing first. A joint that looks fine while sitting in a pool of water may hide a crack below the waterline. A camera also cannot test whether a pipe leaks under pressure, since a drain line only carries water by gravity.
For a leak in a supply line, the answer is a different method, covered under electronic leak detection. If the picture is unclear, the plumber says so rather than guessing.
| What the camera shows | What it usually means | Typical next step |
|---|---|---|
| Roots at a joint | A gap or crack that roots found | Clear the roots, then watch or repair the joint |
| A belly with standing water | The pipe has settled | Monitor, jet regularly or repair the low section |
| An offset joint | Sections have shifted apart | Repair, depending on how far they moved |
| Grease or scale along the wall | Buildup narrowing the pipe | Clean the line and change what goes down it |
| Broken or collapsed pipe | The line has failed | Repair or replace the damaged section |
When it makes sense to schedule one
The strongest reason is a drain that keeps clogging. If you have had the same line cleared twice in a year, the clog is a symptom, and a camera finds the cause. The same goes for slow drains that return soon after clearing.
Other good times to book one are listed below.
- Before you buy a home, to see the condition of the line before closing
- Before a landscaping, tree planting or concrete project over the line
- After a sewage backup, to see what failed
- When a sewer smell shows up with no obvious source
A smell with no source deserves a separate word. A p-trap that has dried out lets sewer gas rise, and a slow leak in a drain can leave a trap unable to hold water. If a trap keeps emptying, a camera can check the drain behind it. Sewer gas that is strong or makes people feel ill is a reason to call the same day.
Want a camera look at your sewer line?
Call the 24/7 line and describe the symptoms. A licensed plumber is scheduled, and you hear the price first.
The cleanout and getting access
The camera needs a way in. The best entry point is a cleanout, a capped pipe near the house or at the property line, often a white or black cap at ground level. If you do not know where yours is, say so on the call and the plumber can look for it.
Some homes have no usable cleanout. In that case the plumber may go in through a toilet, which means pulling it and resetting it, or through a roof vent. These routes work, but they add time and a little risk of damaging a wax ring, so the plumber explains the choice first.
Clear the area around the cleanout before the visit. Dense shrubs, a parked car or a planter on top of the cap all slow the job.
Locating the line
Knowing where the sewer runs is useful on its own. A transmitter in the camera head or on a separate sonde lets the plumber trace the line above ground and mark its path and depth with paint or flags.
That matters before digging, planting a tree or pouring a patio. It also matters when the camera finds a problem, because repair work is priced by where it is and how deep. Marking the spot first means a smaller dig.
The marks locate your private sewer line. The marks show only your private sewer line. Gas, electric and other buried lines can be nearby, so do not dig on your own, and ask the plumber or your utility about having buried lines marked.
Buying a home in Cibolo or a nearby town
A home inspector looks at what is visible. A sewer camera looks at what is buried, and that is the part that is costly to fix. If you are buying in Cibolo, or nearby towns such as Schertz, a camera inspection before closing tells you whether the line is clear, how it is laid and whether there are roots, bellies or cracks.
What the camera shows can give you something to negotiate with. If the line has a problem, you can ask the seller to repair it or adjust the price. If the line is clean, you have a baseline to compare against later.
Keep the limits in mind. A camera shows today's condition and cannot promise how long the pipe will last. The same visit can include a look at a water softener or other plumbing equipment that comes with the house, since a buyer often wants to know what works. A seller's permission is needed to run a camera on a house you do not yet own.
Sewer service in Cibolo: who to call
Sewer billing in Cibolo changed in November 2025. According to the City of Cibolo, it no longer bills sewer, and Green Valley Special Utility District (GVSUD) adds the sewer charge. That affects what you do when a problem shows up.
If every drain in the house is backed up and a neighbor has the same trouble, or a manhole in the street is overflowing, the problem may be in the public main. In that case call GVSUD. Its emergency line for suspected sewer clogs is (830) 914-2331 and its main line is (830) 914-2330.
If only your home is affected, the problem is more likely in your own line. A camera inspection can show which side of the property line the trouble is on, which settles who pays for the fix. The City of Cibolo enforces the 2021 International Plumbing Code (IPC), which sets rules for traps, vents and cleanouts. Permit rules vary, so ask the City of Cibolo building department before any repair that opens a floor or a yard.
What affects the price of a camera inspection
Line length and depth
A long run from the house to the street takes more time than a short one.
Insurance is worth a short call. Homeowners policies usually cover sudden and accidental damage, not wear or slow root growth, and sewer backup often needs its own endorsement. Ask your insurer. You get a clear price before work starts, and any change after the camera goes in is explained before more work begins.
Getting ready for the inspection
Find the cleanout
Look for a capped pipe stub near the house or at the lot line, and tell the dispatcher if you cannot find it.
Clear the area
Move planters, hoses and anything parked on or near the cap so the plumber can reach it.
Hold the water
Avoid running the washer, dishwasher or a long shower while the camera is in the line.
Note the symptoms
Write down which drains were slow, when the smell appears and when the last clearing was.
Common questions about sewer camera inspections
It depends on the length of the line and how easy the access is. A clear line with a cleanout is usually quicker than one that needs cleaning first. The dispatcher can tell you what to expect when you describe the house, and we do not promise a time of arrival.
It can show cracks, gaps and breaks, and standing water in a low spot. It cannot test pressure, because a sewer line is a gravity drain. If the camera shows damage, the options are explained under repairing the sewer line.
It is a sensible step for any house with a buried sewer line, especially an older one. A camera can show roots, bellies and cracks that a standard inspection cannot see. Ask the seller for access, and ask the dispatcher what the visit includes.
Yes, when the camera head carries a transmitter. The plumber marks the path and depth above ground with a receiver. Do not dig on your own, since other buried lines can be nearby.
The camera cannot pass a full blockage. The line usually has to be cleared first, as described under clearing the sewer line. The camera then goes in to find out why it blocked.
It can be. A dry p-trap, a cracked vent or a broken drain line can all cause it, and the camera helps with the last one. Strong odor or illness is a reason to call right away, since the line is answered around the clock.