Sewer Line Replacement in Longmont, CO
For lasting fixes to damaged sewer pipes in Longmont, CO, count on GFR Plumbing for expert sewer line replacement.
- Fast, Reliable Service
- Licensed Plumbers
- Guaranteed Work
- Upfront Pricing
Your Local Plumbers for Sewer Line Replacement in Longmont, CO.
We handle digging or trenchless work, permits, inspection and site restoration.
Sewer Line Replacement in Longmont, CO With Trenchless and Traditional Methods
When your sewer line is beyond repair, GFR Plumbing provides efficient and reliable sewer line replacement for Longmont, CO residents. We handle everything from the initial inspection to final pipe installation. Your new sewer system will meet all local codes and work properly for years to come.
Our expertise includes:
- Modern Video Inspection and Locating
- Code Compliant Installations
- Open-trench replacement with correct slope and bedding

Additional Drain Services Services in Longmont, CO
From stubborn kitchen clogs to main sewer backups, our drain services in Longmont, CO restore full flow fast and keep it that way.

Customers
Why Choose GFR Plumbing for Sewer Line Replacement in Longmont, CO?
Choosing the right contractor for sewer line replacement is essential for the life of your plumbing system. We make sure all work meets local Longmont, CO building codes and standards.
- Site Restoration, We backfill, compact and restore the work area as part of the job.
- Accurate Diagnosis, We use high-resolution cameras to precisely locate damage, avoiding unnecessary digging.
- Advanced Technology, We use up-to-date equipment for accurate diagnostics and efficient replacement.
Citywide Coverage
GFR Plumbing serves every neighborhood in Longmont for sewer line replacement. Whether you're in a historic district or a newly developed area, our team is ready to respond quickly to your call.
Experienced Team
With years of hands-on experience, our technicians at GFR Plumbing are skilled at diagnosing tricky sewer line issues and completing precise replacements with minimal disruption to your property.
Safety-First Approach
Before any excavation or pipe work begins, we verify the location of all underground utilities. Our careful approach keeps your Longmont sewer line replacement safe and compliant.
Trusted Certified Longmont Plumbing Services Professionals
At GFR Plumbing, we take pride in providing licensed, certified plumbing services throughout Longmont, CO. Backed by leading industry credentials, our experienced plumbers combine technical skill with genuine customer care. Whether it is repair, installation, or maintenance, we follow strict safety and quality standards to deliver lasting results you can trust.
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PHCC Plumbing Contractor Recognition
Better Business Bureau (BBB) Accreditation
Angi Certified Pro
ISO 9001 Quality Management CertificationTrusted Sewer Line Replacement Services in Longmont, CO
Emergency Sewer Line Replacement in Longmont, CO
Sewer line emergencies demand immediate attention. A complete sewer line collapse or severe blockage can cause raw sewage to back up into your property. GFR Plumbing offers emergency sewer line replacement across Longmont, CO, responding promptly to limit damage and restore your system. Our emergency team is equipped to handle urgent situations with the right tools and expertise, 24/7.

Permits and Code Compliance in Longmont, CO
Sewer line replacement is a significant project that requires following local plumbing codes and often needs permits from Longmont authorities. GFR Plumbing handles permit applications and makes sure every replacement job meets or exceeds municipal and state regulations in Colorado. Colorado adopts a statewide plumbing code based on the International Plumbing Code, and plumbers must hold a state-issued license. This includes proper pipe sizing, depth, slope, and connection to the main sewer. Skipping permits or code requirements can lead to fines and rework, so we take care of it professionally.
Commercial Sewer Line Replacement in Longmont
Businesses in Longmont rely on robust plumbing systems. A failing commercial sewer line can lead to serious operational disruptions and health hazards. GFR Plumbing provides efficient, professional commercial sewer line replacement, reducing downtime for your business. We work quickly to restore your sewer system, following all commercial codes and standards.
Cast Iron Sewer Replacement in Longmont
Cast iron drains in older homes corrode from the inside, especially along the bottom of the pipe. Over time this leaves cracks, holes and a rough surface that snags waste. Replacing the cast iron sewer outside the home is often the first step. We can also evaluate under-slab cast iron and discuss lining or rerouting choices. New PVC or HDPE will not rust or scale the same way.
Partial Sewer Line Repair in Longmont, CO
Not every damaged sewer needs full replacement. If the camera shows a single break or one root-damaged joint, a spot repair may fix the problem. We locate the exact spot and depth, excavate a small area and replace that section. This costs far less than replacing the whole lateral. We only recommend it when the rest of the line is in sound condition.
Sewer Pipe Lining as an Alternative in Longmont
Cured-in-place pipe lining creates a new pipe inside the old one. After cleaning, a resin-soaked liner is pulled in and cured in place. This works when the host pipe still holds its shape without major sags or collapse. Lining can be a good option under slabs or finished areas. We tell you plainly if your line is a candidate.
Sewer Line Material Upgrades in Longmont
Many older homes in Longmont may have sewer lines made from outdated materials like clay or cast iron, which are prone to cracking, corrosion, and root invasion. We offer upgrades to modern, more durable materials such as PVC or HDPE (high-density polyethylene). These materials stand up to corrosion, roots, and shifting soil, giving your sewer system a much longer lifespan.

Preventative Measures After Replacement in Longmont
Once your sewer line is replaced, we can advise on steps to extend its lifespan. This includes landscaping choices that won't interfere with your new pipes, proper waste disposal habits, and regular inspections. Expansive clay soils are a well-known problem in parts of Colorado, swelling with moisture and heaving slabs, basement floors, and buried pipes. We also talk through how trees and soil movement near your home can affect the line and what you can do to minimize future risks. That keeps your new system in Longmont trouble-free.
Sewer Line Replacement Near Me in Longmont, CO
Our local teams are located to provide quick, efficient sewer line replacement throughout Longmont and surrounding areas. We pride ourselves on being the go-to local choice for reliable plumbing solutions.
Choosing a local company for sewer line replacement means faster scheduling and a team that knows local permit rules. We work with the Longmont building department regularly. That helps keep your project on schedule.
GFR Plumbing at a Glance
- Licensed and insured plumbers serving Longmont, CO
- 24/7 emergency service with same-day scheduling
- Clear written estimates, no hidden fees
- 4.8-star rated by 750+ Colorado customers
Longmont Map
Longmont Information
- Population
- 98,630
- Area codes
- 303/720/970
- Service area
- Longmont and communities within 40 miles
- Nearby
- Lafayette, Boulder, Broomfield, Loveland
In Longmont, CO, shifting soil can put significant stress on sewer lines, leading to cracks and offsets that often call for replacement. Expansive clay soils are a well-known problem in parts of Colorado, swelling with moisture and heaving slabs, basement floors, and buried pipes.
Expert Services
Trust our professionals for reliable GFR Plumbing solutions in Longmont, CO.
Our Specialized Plumbing Services in Longmont, CO
At GFR Plumbing, we provide a complete range of plumbing services across Longmont, CO. From leak detection to full system installations, our team ensures fast, precise, and affordable service for both residential and commercial properties. Explore our core services below:
How Our Sewer Pipe Replacement Process Works in Longmont, CO
Replacing a sewer line is a project, and we manage it from inspection to final restoration.
Request a Quote
Call (720) 727-9398 or fill out our online form to schedule a first visit. We'll discuss your concerns and set up a convenient time for an on-site visit.
Diagnosis & Plan
Our technicians use camera inspections to accurately diagnose the sewer line issue. We then develop a detailed replacement plan, explaining the best method and materials for your property.
Permits & Prep
We handle all necessary permits with Longmont authorities before any work begins. Our team prepares the site, keeping safety in mind and minimizing disruption to your property.
Frequently Asked Questions About Sewer Line Replacement in Longmont
Sewer line replacement in Longmont commonly ranges from about $4,000 to $15,000 for a typical residential lateral, and can run higher for long, deep or hard-to-reach lines. Trenchless work is often priced around $80 to $250 per foot depending on conditions.
Yes, sewer line replacement is a major plumbing project that usually requires a permit from Longmont's building or public works department. GFR Plumbing handles all necessary permit applications and makes sure all work meets local and state plumbing codes in Colorado for a legal, safe installation.
Traditional replacement involves digging a trench to access and replace the entire pipe, which can be more invasive to your yard. Trenchless methods, like pipe bursting or pipe lining, require minimal digging, often just two access points, protecting your landscaping while installing a new pipe.
We typically use PVC for open-trench work and HDPE for pipe bursting. Both resist corrosion and root intrusion much better than clay or cast iron.
We primarily use high-quality PVC (polyvinyl chloride) or HDPE (high-density polyethylene) pipe for sewer line replacements. These materials are durable, corrosion-resistant, flexible, and long-lived, making them ideal for the soil conditions in Colorado.
Yes, sewer line replacement usually requires a permit and inspection. We handle the paperwork and schedule the inspection.
Sewer line replacement is a demanding job that requires specialized equipment, permits, and expertise in excavation, pipe fitting, and local plumbing codes. It is not a suitable DIY project and should always be handled by licensed, experienced professionals for safety and compliance.
Repeated backups, sewage odors in the yard, soggy spots, and camera footage showing collapse, major cracks or long bellies are clear signs. A camera inspection gives a clear answer.
What People Are Saying About Our Plumbing Experts?

Daniel K.
A pipe burst at 11 pm and they actually answered. The plumber showed up within the hour, shut everything down, and had us back to normal the next morning. Could not ask for more.
Emergency Plumbing · Longmont, CO
Patricia H.
We had a slab leak that two other companies could not find. GFR Plumbing located it in under an hour, explained our options, and the price matched the quote to the dollar.
Slab Leak Repair · Boulder, CO
James P.
Our commercial plumbing system had a leak under the sink, and GFR Plumbing handled it professionally. The plumbers arrived quickly and restored everything without disruption to our customers.
Commercial Plumbing · Boulder, CO
Robert G.
The trenchless sewer replacement saved our front yard. They walked us through the camera inspection footage first so we knew exactly what we were paying for.
Sewer Line Replacement · Broomfield, CO
Laura S.
I scheduled a water heater replacement, and the team made the process smooth and affordable. The new unit works perfectly, and they cleaned up after completing the job.
Water Heater Replacement · Longmont, CO
Mark T.
When our office needed drain cleaning, GFR Plumbing provided quick, reliable service. The plumber arrived on time and made sure every drain flowed perfectly before leaving. Very satisfied.
Drain Cleaning · Longmont, CO












