Repair or replace, by defect
| # | Camera finding | What it looks like | Usually | Notes |
|---|---|---|---|---|
| R-01 | Single crack | Hairline or open crack in one pipe section | Repair | Spot repair or a short liner |
| R-02 | Root intrusion at one joint | Fine roots or a root mass at a joint | Repair | Clear roots, then seal the joint |
| R-03 | Roots at many joints | Roots at joint after joint | Replace | Lining or bursting often beats repeated cutting |
| R-04 | Offset joint | A step where sections no longer line up | Repair | Spot excavation; check for more offsets |
| R-05 | Belly (sag) | Standing water over a stretch of pipe | Replace | Regrading needs an open trench |
| R-06 | Collapsed pipe | Camera cannot pass; soil in the line | Replace | Dig at the collapse, then decide on the rest |
| R-07 | Grease buildup only | Coating on the pipe walls; pipe intact | Clean | Jetting plus changes in what goes down the drain |
- RootsMats that catch paper and waste
- CrackLets roots and soil in
- OffsetA lip that snags flow
- BellyWater pools in a low spot
- CollapseLine is blocked by soil
Root cutting is maintenance, not a fix
Roots “make their way into sewer line cracks and service pipe joints, and can cause extensive damage or blockages as they grow larger,” according to the Insurance Information Institute (Triple-I). Cutting or jetting reopens the pipe, but the opening they came through is still there.
If roots return every year or two, ask the contractor to show you on video exactly where they enter. One joint can be sealed; ten joints is a replacement conversation. Oak-lined streets in Walnut Creek, Lafayette and Danville make this the most common call.
How a spot repair works
- LocateThe camera operator marks the defect's distance and depth on the surface.
- PermitThe contractor pulls the Central San permit; outside sewer work needs one even for a short section.
- ExcavateA single pit at the defect, sized for safe work at that depth.
- Replace the sectionDamaged pipe comes out and a new section is joined to the old pipe with approved couplings.
- Inspect and backfillCentral San inspects before backfill; book it 24 hours ahead on (925) 229-7373.
- Re-videoAsk for footage of the repaired section and the rest of the line.
What a repair costs
A Bay Area plumbing company puts typical sewer repairs at $1,400–$5,300+, with root removal and hydro-jetting priced separately (Bellows). Depth, the surface above (lawn vs. concrete) and whether the defect is under the street move the number. Full ranges on the cost page.
Want a second opinion on a repair-or-replace recommendation? Have another local contractor look at the same footage.
Questions to ask before you approve a repair
- Can I have the full video, with distances, not just a clip?
- How many other defects are on the line, and where?
- If I repair this section now, what is likely to fail next?
- What warranty covers the repaired section, and does it cover anything else?
- Would lining or bursting the whole line cost much more?
For the full replacement picture see sewer line replacement and trenchless options.
Questions homeowners ask
Is it worth repairing a sewer line?
Yes, when the problem is isolated: one crack, one root-entry point or one offset joint in pipe that looks sound on the rest of the video. If the camera shows trouble at joint after joint, repeated spot repairs usually cost more over time than one replacement.
How often do sewer laterals need replacing?
There is no fixed schedule. Material, soil, trees and installation quality matter more than age alone. A camera inspection is the only reliable way to know the condition of your line.
Will cutting the roots fix the problem?
Root cutting or hydro-jetting clears the pipe, but roots re-enter through the same openings. It is maintenance, not a repair. Tree roots seek moisture and enter through cracks and joints (Triple-I).
Does a spot repair need a Central San permit?
Yes. Central San requires a permit for sewer work outside the building, on or off your property (Central San).
Sources
- Bellows Plumbing: Sewer Line Repair Cost Guide in the Bay Area
- Insurance Information Institute (Triple-I): Protect your house from sewer backups
- Central San: Sewer Repairs (permits, cleanouts, OPDs, inspections)
- Next Level Plumbing: Sewer Lateral Replacement Cost, 2026 Bay Area Guide
Rules and programs change. Confirm current requirements with the agency before you start work.