Trenchless vs. Traditional Sewer Repair: Which One Is Right for You?

When your sewer line needs repair, you'll hear two approaches: trenchless and traditional (open-cut). Both fix the pipe. The difference is how much of your property gets torn up in the process — and what that means for your total cost.

What is traditional sewer repair?

Traditional open-cut repair means digging a trench along the length of the damaged pipe, removing the old pipe, installing new pipe, backfilling, and restoring the surface. It works for every type of failure and every pipe material. The downside is the disruption — excavating across a Tempe backyard with mature landscaping, a concrete patio, or a paved driveway adds significant restoration cost on top of the pipe work itself.

What is trenchless sewer repair?

Trenchless repair fixes the pipe from the inside without opening the ground along the full pipe run. There are two main methods: CIPP lining (creates a new pipe inside the old one) and pipe bursting (breaks the old pipe outward while pulling a new pipe in behind it). Both require small access pits at each end of the run, but the trench is measured in feet rather than running the full lateral length.

When trenchless is the right call

Trenchless makes the most sense when the pipe has structural integrity issues across a long run (root intrusion at multiple joints, widespread cracking) but hasn't completely collapsed. In Tempe, it's particularly attractive because the caliche soil adds cost and time to any excavation. If you have mature landscaping, concrete hardscape, or a paved driveway over the line, trenchless often saves money overall even if the pipe work itself costs a bit more.

When traditional excavation is the right call

Open-cut repair is necessary when the pipe has completely collapsed, when there's a severe belly (low spot where the pipe has sagged), or when the pipe needs to be repositioned at a different grade. CIPP lining can't fix a collapsed pipe — the liner needs a host to cure against. Pipe bursting can handle some bellies but not severe ones. Your crew will tell you which applies after the camera inspection.