Sewer Camera Inspection: What It Shows and When You Need One
A sewer camera turns a guessing game into a picture. Instead of paying someone to rod a line every eighteen months forever, you find out what is actually wrong with the pipe and decide whether to maintain it or fix it.
When an inspection is worth the money
- Before buying a house. A standard home inspection does not include the sewer lateral. On any DeKalb or Sycamore home built before roughly 1975 — which covers most of the near-campus neighborhoods and the older streets off Lincoln Highway and Fourth Street — this is inexpensive insurance against a five-figure surprise.
- After a second backup. One backup can be a wipe or a hairball. Two in the same line means a condition, not an accident.
- Recurring problems on a cycle. Roots regrow and bellies refill on a predictable schedule. If you can set your calendar by it, you have a structural problem.
- Before you pay for a repair. Nobody should excavate a lateral without video and a surface locate first.
- When the yard sinks, smells or greens up in a strip. Classic exfiltration signatures.
- After major nearby excavation. Utility work, a new driveway or a tree removal can crush or offset a line.
What you will see on the screen
Roots
The most common finding in older DeKalb neighborhoods. You will see fine white or tan hair-like masses entering at a joint, or a dense mat filling the pipe. What matters is not the roots themselves but where they enter — an offset clay joint, a crack, a failed mortar seal. Cutting them out restores flow; it does not close the door they came through, which is why they come back.
Offset joints
One length of pipe has shifted relative to the next, so the camera sees a ledge. A small offset catches paper and solids. A large one is a structural failure that will keep getting worse as soil washes into the gap.
Bellies (sags)
The camera goes underwater and stays there for several feet before coming up again. The line has settled so a section sits below the run’s grade, and water stands in it permanently. A shallow belly may run for decades with routine maintenance. A deep one collects solids and causes recurring backups, and correcting it means excavation.
Cracks and fractures
Longitudinal cracks along the pipe, circumferential cracks around it, or open fractures with soil visible behind. Any crack is both a root entry point and a route for groundwater to get in and soil to get out.
Scale and build-up
In cast iron, heavy rust scale narrows the bore and gives waste something to snag on. In any material, grease build-up does the same. Jetting removes it; the underlying pipe condition determines whether it stays clear.
Collapse
The camera stops because the pipe has failed completely. This is the finding that means replacement, and it is the reason we always locate the camera head from the surface before quoting.
The connection to the city main
Worth reaching if we can, because a defect at or beyond the connection may not be your financial responsibility. We document it with video and a surface locate so you can take it up with the appropriate authority rather than pay for work that is not yours.
The part people forget: the surface locate
Video alone tells you what is wrong and roughly how far down the line it is. It does not tell you where to dig. The camera head carries a sonde, and we track it from the surface with a receiver and mark the defect’s position and depth in paint on your lawn or drive.
That mark is the difference between a four-by-four pit and a trench. Do not accept a sewer inspection that does not include it.
What you should walk away with
- The recorded video, in your possession, not just watched once on a tablet
- The pipe material and approximate age
- Each defect, its type, and its distance along the run
- Surface marks showing position and depth
- A plain statement of whether this is a maintenance situation or a repair situation
- Repair options, not just the most expensive one
A note on being sold a full replacement
Sewer work attracts overselling because the customer cannot see the pipe. Ask to watch the screen while the camera runs. Ask what specifically makes a repair inadequate for your defect. Ask whether jetting and root cutting would buy time, and how much. A camera inspection that always concludes “you need a full replacement” is not an inspection, it is a sales call.
Plenty of laterals we camera get a recommendation of routine maintenance and a re-inspection in two years. That is a legitimate outcome.
Quick answers
Usually under an hour when there is an accessible cleanout. Longer when we have to create access by pulling a toilet or opening the stack, and longer again if the line needs clearing before the camera can pass.
Not usefully — the camera cannot pass the blockage and the lens ends up covered. We clear it first, then inspect, which is also the right order because you want to see the pipe's condition rather than the debris.
No. A push camera travels through the existing pipe with no cutting or digging. The only invasive part is creating an access point where no cleanout exists, and we discuss that before doing it.
More leak guides
The 30-minute meter test that tells you whether water is escaping, and whether it is inside the house or underground.
Where DeKalb pipes freeze, how to prevent it, and the first five minutes when one bursts.
Eight causes of a sudden bill spike, ordered from the cheapest fix to the most serious.
Leak line, answered 24 hours
(815) 849-0091Call nowOne call does it. We work out what is likely wrong on the phone, quote before we come out, and book you in on the same call.