Sewer line replacement

When you need a new sewer line

The clearest signs your sewer line needs help:

• Repeated backups that snaking doesn't fix for long
• Multiple fixtures draining slowly at once — sink, tub, toilet
• Sewer smell in the yard or basement
• Wet spots, sinkholes, or unusually green patches in the line's path
• Water surfacing at low points in the yard after rain
• Camera inspection from a plumber showing cracks, offsets, root intrusion, or belly-sag
• Old clay or Orangeburg pipe — both have a known end-of-life and most original residential installs from before the late 1970s are at or past it

A plumber typically diagnoses the line with a sewer camera. If they recommend replacement, the excavation is the next call.

Two ways to replace

There's open-trench and there's trenchless. Each has its place.

Open-trench replacement

The traditional method: excavate a trench from the building to the connection point (city main or septic), remove the old pipe, lay new pipe to grade, bed and backfill, restore the surface.

Open-trench is the right answer when:

• The existing line has serious belly-sag that trenchless can't correct
• Sections of the line have collapsed or shifted significantly
• Multiple branches or connections need to be addressed
• The line passes through obstacles that need to be repositioned anyway
• The line is shallow enough that trenching is straightforward

Trenchless (pipe burst or pipe lining)

The newer methods — pipe-bursting or cured-in-place lining — leave most of the surface intact and only excavate at the endpoints. Less disruptive but not always cheaper, and not appropriate for every situation.

Trenchless is the right answer when:

• The existing line's path is mostly straight and at a usable slope
• The line is under finished surfaces (driveways, mature landscaping) that you don't want torn up
• There are no major belly-sags or collapses
• The plumber recommends it after a camera inspection

We handle the excavation side of both. For the trenchless equipment itself we coordinate with specialty subs.

What's included on an open-trench job

• Tennessee 811 or Georgia 811 locate before any digging
• Pre-dig coordination with the plumber on the slope, depth, and connection points
• Trench excavation from building to connection — typically 24-48 inches deep depending on the slope needed
• Sand or fine-soil bedding under the new pipe
• PVC, ABS, or HDPE pipe per the plumber's spec, laid to grade
• Pressure or visual test of the new line in coordination with the plumber and the inspector
• Backfill in lifts with compaction
• Surface restoration — yard with topsoil and seed, driveway with concrete or asphalt patch, walkway with whatever was there

Septic-to-city tie-ins

When city sewer service reaches a property that's been on septic, the homeowner often has the option (or the requirement) to abandon the septic and tie into the main. We handle:

• The new lateral from the building to the city tap
• The required permits and inspections (typically the city water and sewer department)
• The septic tank abandonment — pumping, crushing or filling, recording with the regulator
• Final yard restoration

Common projects we handle

• Residential sewer-line replacement after a camera inspection finds a failure
• Lateral replacements from the building to the property line
• City tap connections for new construction
• Septic-to-city conversions
• Sewer line extensions to detached buildings or ADUs
• Storm sewer repairs and storm-to-sewer separations (where allowed)

Meta

• Meta title: Sewer Line Replacement & Repair, Chattanooga TN | L & S
• Meta description: Main sewer line replacement, lateral repair, and septic-to-city tie-ins across the Greater Chattanooga area. Excavated, replaced, backfilled, restored.

Recent work