How Long Does Sewer Line Replacement Take

Timeline by Replacement Method

CIPP Lining: 1 Day

CIPP lining is the fastest sewer replacement method. The typical schedule is pipe cleaning and inspection in the morning (2 to 3 hours), liner insertion and inflation (1 to 2 hours), curing (1 to 8 hours depending on method), and final inspection (30 minutes to 1 hour). With UV curing, the entire project is often completed within 6 to 8 hours. Ambient curing takes longer, with the pipe returning to service the following morning.

Your sewer service is interrupted only during the active lining phase, typically 4 to 8 hours. During this time, you cannot use any drains, toilets, or water-using appliances that discharge to the sewer. Plan accordingly by filling containers with water for drinking and flushing, and avoid running the dishwasher or washing machine.

Pipe Bursting: 1 to 2 Days

Pipe bursting is a one-day operation for most residential laterals, but some projects extend to two days. Day one includes excavating access pits at both ends of the pipe run, performing the bursting operation, connecting the new HDPE pipe to the house and the municipal connection, and backfilling the access pits. If the project starts early, it is often completed by late afternoon.

Projects that extend to a second day typically involve deeper pipes (requiring more time for access pit excavation), longer runs (over 100 feet), complications such as unexpected bends or connections, or branch line reconnections.

Sewer service is interrupted for the duration of the bursting operation, typically 4 to 8 hours. The new pipe is functional as soon as it is connected at both ends, usually by end of day one.

Traditional Excavation: 3 to 5 Days

Traditional sewer line replacement is the most time-consuming method because it involves extensive earthwork. Day one is typically spent excavating the trench along the full length of the sewer line. Day two involves removing the old pipe and installing new PVC or ABS pipe at the correct grade. Day three covers connecting the new pipe at both ends, backfilling the trench with proper compaction, and final inspection. Additional days may be needed for surface restoration, including concrete work if the trench crossed a driveway, landscaping, and irrigation repair.

Sewer service is interrupted for the full duration of the pipe removal and reinstallation, typically 1 to 2 full days. Your contractor should provide a portable toilet if the interruption extends beyond one day.

Factors That Extend the Timeline

Permit delays. Some municipalities issue plumbing permits the same day, while others require 3 to 10 business days for review. If your contractor has not pulled the permit before the scheduled start date, the project cannot begin until the permit is approved. Ask about permit timing when scheduling the work.

Pipe depth. Deep sewer lines (6 to 12 feet) require more time for excavation, whether for a full trench or for access pits. Shoring requirements for deep trenches add setup and removal time. A pipe at 10 feet deep may add a full day to a traditional excavation project.

Pipe length. Longer pipe runs take more time for every method. A 150-foot lateral takes roughly twice as long as a 75-foot lateral for pipe bursting and traditional excavation. CIPP lining time is less sensitive to length because the insertion and curing phases scale slowly.

Unexpected conditions. Unknown utility crossings, rock encountered during excavation, pipe conditions that differ from the camera inspection findings, or discovery of additional branch connections can all extend the timeline. A good contractor builds a buffer into their schedule for unexpected conditions.

Municipal inspection scheduling. Most jurisdictions require a municipal inspection before the trench is backfilled (for traditional work) or after the liner is cured (for CIPP). If the inspector is not available the same day, the project may be delayed by a day waiting for inspection approval. Some contractors coordinate inspector availability as part of their scheduling process.

Surface Restoration Timeline

The pipe replacement itself is only part of the total project timeline. Surface restoration can add significant time to traditional excavation projects. Concrete driveway or sidewalk repair requires 2 to 5 days for concrete to cure before it can be used. Landscape restoration (grading, topsoil, sod) can be completed in 1 to 2 days but the new sod needs 2 to 4 weeks to establish. Irrigation system repair, if the trench crossed sprinkler lines, adds half a day to a full day.

Trenchless methods avoid nearly all surface restoration. The small access pits from pipe bursting are backfilled and the surface repaired within hours. CIPP lining typically requires no surface restoration at all.