Sewer line camera inspections: when you need one and what it actually shows

Your sewer line is the one system in the house you cannot see, buried from the basement wall to the street, and in older northwest suburbs neighborhoods it may be clay tile or cast iron that has been in the ground for fifty years or more. When drains misbehave, the instinct is to rod the line and move on. Sometimes that is right. A camera inspection answers the question rodding cannot: what is actually down there, and will it keep happening?

The clearest case for a camera is a recurring clog. A line that backs up twice in a year is telling you something structural: tree roots entering at a joint, a belly where the pipe has sagged and holds water and solids, a cracked or offset section, or a partial collapse. A camera run, which typically costs $250 to $500, shows the problem, its location, and its depth, so a repair quote is based on a diagnosis instead of a guess. Ask for the recording, not just a verbal summary; reputable companies hand it over as a matter of course.

The second case is buying a home. A standard home inspection covers the drains inside the house but not the buried lateral, and a sewer replacement in the suburbs typically runs $5,000 to $15,000 depending on depth, length, and how much yard or driveway has to come up. A pre-purchase camera inspection on a Park Ridge or Arlington Heights home built before 1980 is inexpensive information about one of the largest hidden costs in the transaction. If the inspection window is tight, ask anyway; sellers in our market see the request regularly.

What will you see on the video? Roots look like pale webs at the joints. A belly shows as a stretch where water stands deep in the pipe. Grease appears as orange or gray coating narrowing the walls, common near kitchen runs. The operator should narrate distances as the camera travels, because a problem eight feet out, under the lawn, is a very different repair from one forty feet out, under the street-side parkway. The inspection also confirms the pipe material, which shapes every repair option that follows.

What a camera cannot do is fix anything, and that distinction matters when you are quoted next steps. Root intrusion with otherwise sound pipe often needs only periodic cleaning or a root treatment. A cracked or bellied section may qualify for trenchless lining, which typically costs less than open excavation and spares the landscaping, while a collapsed line usually means digging. Get the diagnosis in writing and take a second quote on any five-figure recommendation; the video makes second opinions easy, because the second company can review the same footage.

If you have had two backups in a year, or you are buying an older home, schedule the camera before you schedule anything else. The directory lists plumbers across the northwest suburbs; when you call, ask directly whether the inspection includes a recording and a written report, because those two deliverables are what turn a service call into a document you can plan around.