What Causes Repeated Drain Stoppages

A Clog Is a Symptom, Not a Diagnosis

Clearing a stoppage restores flow. It does not tell you why the stoppage formed. If a line backs up on a predictable schedule, something about that line is causing it.

There are really only a few culprits, and they have very different solutions and very different price tags.

The Usual Causes

• Grease and buildup. Common in kitchen lines and in commercial kitchens especially. It narrows the pipe until anything catches.
• Root intrusion. Roots exploit joints and cracks in older clay and cast iron sewer laterals. Cabling cuts them; it does not stop them coming back.
• A belly or sag. A section of line that has settled holds water and debris. Nothing you do inside the house fixes it.
• Damaged, offset, or collapsed pipe. The line has structurally failed. No amount of cleaning changes that.
• Improper venting or slope. Sometimes it was never right to begin with.

Why Camera Inspection Settles It

A camera inspection shows the visible condition of the line: whether you are looking at buildup, roots, a sag, or a break. That distinction is the difference between a cleaning, a hydro jetting, and a sewer repair.

What a camera can see is affected by access, water level, and debris — but it is far better than guessing.

Is Hydro Jetting the Answer?

Sometimes. Hydro jetting is effective on heavy buildup, grease, and sludge when the pipe condition supports it. It is not right for every line, and it does not repair damaged, collapsed, or offset pipe.

Anyone who recommends jetting before looking at the line is guessing.