Quick Answer
Ironclad Plumbing explains the signs your sewer line may need replacing because sewer replacement is one of the highest-ticket jobs in residential plumbing, and the difference between a $2,000 repair and a $12,000 replacement depends entirely on the evidence.
| Sign | What It Probably Means | Likely Fix |
|---|---|---|
| Recurring backups even after professional clearing | Structural problem in the line (roots, offset, belly, crack) | Camera inspection ($275) first, then repair based on findings |
| Multiple drains slow at the same time | Mainline restriction or partial blockage | Camera inspection to diagnose. May be clearable. May need repair. |
| Sewage smell in the yard | Crack or break in the sewer line allowing waste to seep out | Camera inspection. Likely needs repair. |
| Patches of extra-green or soggy grass over the sewer line path | Sewage is fertilizing and saturating the soil | Same as above |
| Gurgling sounds from multiple fixtures | Air entering the drain system through a break or offset in the sewer line | Camera inspection. Could be a vent issue (cheaper fix) or a sewer line issue. |
| Sinkholes or depressions in the yard over the sewer line | Pipe has collapsed underground and soil is settling into the void | This is urgent. Camera inspection + likely replacement of the collapsed section. |
The critical rule: Never agree to sewer replacement without camera footage proving the line can’t be repaired. A spot repair at $2,000 or a trenchless lining at $5,500 may solve the problem without a $12,000 excavation.
When full replacement IS the right call:
- Orangeburg pipe (tar paper, 1950s-1970s). It’s disintegrating. You can’t line it. You can’t spot-repair it meaningfully. Replace.
- Cast iron with widespread deterioration. Camera shows pitting, cracking, and scale buildup throughout the line, not just in one spot.
- Multiple previous repairs in different locations. The line is failing systemically.
- The pipe has collapsed. Lining can’t fix a collapsed pipe.
When repair or lining is enough:
- Single root intrusion point. Cut the roots, repair the section, and consider root barriers.
- Single offset (sections shifted apart). Trenchless lining can bridge a moderate offset.
- Single crack or joint separation. Spot repair or lining.
- Line is generally intact but has buildup. Hydro jetting + lining.
Full pricing: spot repair (~$2,000), trenchless lining (~$5,500), full replacement (~$8,000-$12,000). Ironclad’s Open Price Guide.
Call Ironclad: (833) 597-1932. We always start with a camera. No service visit fees.