Main line sewer repair for the primary sewer run connecting your building to the city sewer or septic system. When this line fails, every fixture in the property is affected. We camera the full run, locate the failure, and repair the pipe.
What you are seeing
Every drain in the building empties into one pipe - the main sewer line. When that line cracks, separates, collapses, or bellies, the symptoms show up everywhere. Toilets back up. Showers drain into bathtubs. Floor drains push sewage onto the basement or utility room floor.
If cleaning has been done more than once and the problem keeps returning across multiple fixtures, the main line itself is likely damaged. The blockage is a symptom - the pipe is the problem.
When this repair applies
This repair applies when the structural failure is in the main sewer line - the 4-inch or 6-inch pipe that carries waste from the building to the municipal connection or septic tank. That is a different job than fixing a single branch drain under a bathroom or kitchen.
Main line damage affects the entire property because every fixture routes through it. The repair has to account for the full run, not just the point where backups are surfacing.
What you walk away with
You walk away with the damaged section of your main sewer line repaired, camera footage of the entire run before and after the work, and a clear explanation of the remaining pipe condition. If additional sections show early-stage deterioration, you will know about them before they become the next failure.
Problem
A branch drain problem affects one fixture. A main line problem affects everything downstream of the connection point - and on most residential properties, that means every fixture in the building drains through the same pipe.
The main sewer line is typically the longest, deepest, and hardest-to-reach pipe on the property. It runs from the building's main cleanout to the city tap or septic tank, usually 3 to 8 feet underground, and on older Northern Utah properties it may be clay, cast iron, or Orangeburg - materials that crack, corrode, and collapse as they age. Main line failures develop slowly. Roots find a joint, soil settles under a section, or the pipe material deteriorates from decades of use. The early signs - a slow flush, a occasional gurgle - get ignored or cleaned away. By the time backups are happening across multiple fixtures, the pipe has often been failing for months or years. What makes main line repair different from a branch repair is scale and consequence. The pipe is larger, deeper, and longer. The excavation is more involved. The surface restoration - yard, driveway, sidewalk, whatever sits above the line - adds cost and complexity. And until the main line is repaired, no drain in the building works reliably.
Solution
Main line sewer repair starts with a camera inspection of the entire primary run - not just the first few feet past the cleanout. The camera documents pipe material, diameter, joint condition, and every defect from the building to the property line. That footage is what separates a scoped repair from a guess.
Once the failure is located and measured, the repair method matches the damage. A single cracked joint on a shallow line in open yard is a straightforward section replacement. A 20-foot collapsed segment of clay pipe under a concrete driveway is a different job entirely. The camera footage, pipe material, depth, and surface conditions determine which approach fits - spot repair, section replacement, trenchless lining, or full excavation and replacement.
Main line repairs also require clearing the line before the camera can travel the full run. That is why jetting equipment deploys on every call - if the pipe is holding debris, grease, or root mass from the failure, the line gets cleared first so the camera can document the actual pipe condition, not just the blockage sitting in front of the damage.
Fit and situation bullets
Problem bullets
Customer Feedback
See what customers say after a main line sewer repair — from the diagnosis process and camera findings to the clear communication on what the repair involved and what to expect from the line going forward.
Leave a Review!Amazing experience! They are knowledgeable, kind, courteous and very thorough. Our clogged kitchen pipe was a bit of a challenge but they kept going and did everything they could to get it unclogged and they did it! They were very upfront with what caused the clog, gave us video recording of our pipes so we can see exactly what was done, double checked to make sure the pipes were clean and free of clogs and gave us steps on how to maintain the pipes moving forward. Highly recommend!!
I had an Emergency pipe back up AJ and Jake came snaked and got it all jetted out and cleaned up quick and for a really fair price! Anyone in need I would highly recommend
Very professional, quick and efficient work definitely would recommend
Highly recommend, very quick and easy to work with crew, drain cleaned my main sewer line professionally and well done.
This company is Awesome!!! Highly recommend that you call them for your drain cleaning and power washing needs! A++ in service, cost, and quality of work. Alex and Jacob completed drain work, patio cleaning, and filled in cracks in cement. The patio looks brand new! Thank you Alex and Jacob!!!
Alex was very good to work with. They were professional and punctual, working around my schedule. They were able to show me exactly before and after, even showing footage inside my pipes, which I have never seen before. I would recommend them.
Why Mountain West
Camera rated to 200 feet
Covers the full main sewer run on most residential and small commercial properties in a single pass. Live footage review so owners see every joint, crack, and defect before the repair scope is set.
Jetting and camera on every call
Hydro jetting equipment deploys on every service call. Main lines holding root mass, grease buildup, or debris from a pipe failure get cleared first so the camera documents actual pipe condition - not just what is sitting in front of the damage.
3,850 PSI jetting capability
Clears main lines 2 to 12 inches in diameter at 3,850 PSI and 8 GPM with 300 feet of reach - enough to jet the full primary run and follow immediately with the camera.
20+ years combined field experience
Two decades diagnosing main line failures across clay, cast iron, Orangeburg, and PVC - including the judgment calls on when a spot repair holds versus when the full run needs replacement.
Licensed and insured
Licensed for sewer, drain, and drainage system work including excavation, trenching, backfill, concrete, and asphalt work required for main line access and restoration.
Every main line sewer repair visit follows the same sequence: clear the line, camera the full run, scope the repair to the confirmed damage, complete the work, and verify the result on camera.
You leave the visit with a functioning main sewer line, before-and-after camera footage of the full run, and a documented condition report for the sections that were not repaired - so you know what to watch and what has years of life left.
Main line failures sometimes lead to decisions beyond the initial repair. If the camera shows damage extending the full run, or if the line qualifies for a trenchless method, these services cover the next decision points.
Evidence
Next Service RouteSewer Camera InspectionIf no camera has been run yet, start here. Sewer camera inspection documents the full main line condition so the repair is scoped to confirmed damage - not estimated from symptoms at the surface.
Next Service RouteTrenchless Sewer RepairTrenchless sewer repair for main lines that qualify for lining or pipe bursting instead of open excavation - less yard disruption, lower restoration costs, and faster completion when the existing pipe meets the criteria.
Next Service RouteSewer ExcavationSewer excavation for main line repairs that require open-trench access - deep lines, collapsed sections, or damage under hardscape where trenchless methods cannot reach.Scope and timing
Cost
Support
These are the quick answers most people want before they call, book, or decide on the next step.
Main line sewer repair fixes structural failures in the primary sewer pipe that connects a building to the municipal sewer or septic system. This includes cracks, joint separations, collapsed sections, bellied pipe, and material deterioration in the main run - the single pipe that every drain in the building empties into.
If multiple fixtures are backing up or draining slowly at the same time - especially the lowest drains in the building like basement floor drains or ground-floor showers - the failure is likely in the main sewer line rather than a single branch drain. A sewer camera inspection confirms the location and type of damage in the main run.
The technician jets the main line to clear it, then cameras the full run from the building cleanout to the property line to document the damage. The repair is scoped to the confirmed failure - spot repair, section replacement, or full-run replacement depending on the extent of damage. A post-repair camera pass verifies the fix and documents the condition of the remaining pipe.
Main sewer line repair cost depends on the length of pipe being repaired, the depth of the line, the repair method, the pipe material, and what sits above the line on the surface. A single joint repair in a shallow, yard-covered line costs significantly less than replacing a full run of collapsed clay pipe under a concrete driveway. Mountain West provides a detailed scope and estimate after the camera inspection confirms the damage.
Related Reading
These follow-up reads stay close to this service and answer the pricing, warning-sign, process, and comparison questions that usually come next.
Cost Question
Breaks down the variables that move a sewer repair quote - depth, pipe material, repair method, and what the surface restoration involves.
Warning Signs
How to tell whether the signs you are seeing point to a structural pipe failure or a blockage that cleaning can resolve.
Service Explainer
What a typical sewer repair visit involves from camera inspection through completed work, including the questions worth asking before the crew starts.
