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Find Sewer main install, replace or repairers in Longmont

Avatar for Rooter Guy, LLC
Rooter Guy, LLC
4.6(
3,104
)

Serving Longmont, CO and surrounding areas

Approved

Super Service Award Winner

In business since 1995

Free estimates

Emergency services offered

"The Rooter Guy replaced my main sewer line in 1 day. They did excellent work. Removing and installing new pipe . Haul off all the old concrete and pipe. They cleaned up so good I couldn't believe it!! Worth every penny!! Keep up the good work Rooter Guys. I would Definitely hire them again if needed."
sewer cleaning
1272 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for No Limits Plumbing & Drains
No Limits Plumbing & Drains
5.0(
109
)

Serving Longmont, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Warranties offered

Small jobs welcome

"The company was very fast, efficient, and very professional. I had to have my sewer pipe replaced, so they had to dig up my laundry room and bedroom floor. About a 1’1/2” wide of concrete floor They fixed the pipe and repaired the cement floor and cleaned up all of there mess. The workers were very nice and did a great job. And very far price. I’m very happy with their work. Would highly recommend this company."
Sink Rough In
Washer
Sink for bathroom
Shower & Toilet
Before Cleanout

+2

Response time7 hrs
96 neighbors recently requested a quote
Recommended by57%of homeowners
Avatar for Peak Plumbing & Drain Repair, LLC
Peak Plumbing & Drain Repair, LLC
4.8(
62
)

Serving Longmont, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Credit card accepted

"They did a great job fixing our sewer line. All workers were experts of this trade. They kept all the dust concealed in the areas they had to jack hammer in the basement. They used a window well to bring in their tools and supplies. They didnâ t want to haul the mess through the house. Canâ t say enough about their excellent work. I have already told the neighborhood about their great work. Thanks guys"
Before
Sewer Repair
Response time6 hrs
100 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Flatirons Plumbing, Inc.
Flatirons Plumbing, Inc.
4.7(
265
)

Serving Longmont, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Emergency services offered

"We had a sewer line leak, a sump pump replacement, an outdoor faucet replacement, a tub drain repair and expansion sleeves installed on vertical sewer pipes. Anthony was very knowledgable and helpful. Everything fixed and I would hire Flatirons again.."
Our Flatirons Plumbing Team!
We promise to listen to our customers
The Flatirons Plumbing Team
Response time5 hrs
10 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for TYCO Plumbing Corporation
TYCO Plumbing Corporation
5.0(
60
)

Serving Longmont, CO and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"Excellent, very professional job. Tyler repaired our bathtub fixtures and replaced the leaking main water-supply valve, as well as the defective water-pressure regulator. He did all that on time and at a reasonable price. Highly recommended."
Tub/Shower valve upgrade
New 1/4 turn main with pressure reducing valve.
Upgraded disposal with drain modifications. (AFTER
Leaking disposal with improper drain. (BEFORE)
New fiberglass tub install

+2

Response time2 hrs
7 neighbors recently requested a quote
Recommended by98%of homeowners
Dr. Drain
5.0(
10
)

Serving Longmont, CO and surrounding areas

Approved

In business since 2014

Free estimates

Credit card accepted

"Great drain clearing service by Jordan without all the bait and switch add-ons provided by the lower cost services. His charge included camera work before and after, with the best guarantee: no payment if he can't clear the line. He uses more powerful equipment than the cheaper services. Don't fall for the $95 service offered by others -- I tried them and they are a scam. They come out, use their lower power equipment unsuccessfully, and then try to get you to upgrade for major repairs. This guy is honest from the start and gets your line cleared in one visit."
Best Dog Ever
Pre Lined CIPP Pipe
Busy Day, Boulder CO
Wining
NuFlow Liner

+1

Response time2 hrs
Response rate100%
10 neighbors recently requested a quote
Avatar for Generation Sewer and Water, LLC
Generation Sewer and Water, LLC
4.6(
27
)

Serving Longmont, CO and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

"Lowest cost of prices received, scheduled and completed the extensive sewer main line repairs (only 1 day on site) very quickly, and cleaned up everything. Good work and good firm."
Response time7 hrs
Recommended by80%of homeowners
Avatar for OnGrade Plumbing & Excavating LLC.
OnGrade Plumbing & Excavating LLC.
5.0(
8
)

Serving Longmont, CO and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"Ongrade plumbing and excavating was a god send. Unbelievable how clean and professional they were from start to finish on my sewer line replacement. They did their best to protect my grass with plywood and did a very good job cleaning up given the huge pile of dirt! Thier pricing was amazing compared to some of the other estimates I received from other company's. Highly recommend to anyone for any of thier home or business plumbing issues"
Underground Gas Line
Underground Gas Line
Underground Gas Line
Leaking Pipes
Tankless Water Heater

+1

Response time10 hrs
Response rate91%
3 neighbors recently requested a quote
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FAQs for sewer main install, replace or repair projects in Longmont, CO

Sewer line replacement costs range from $50 to $250 per linear foot. Your replacement costs rise or fall based on material quality, installation complexity, and the specialized equipment crews need for excavation. Deeper lines cost more to access, and choosing budget-friendly PVC piping rather than premium copper also shifts the final price.

A sewer sleeve repairs cracked or damaged sections of a sewer pipe without the need for excavation. In this process, technicians insert a cured-in-place pipe (CIPP) liner, saturated with epoxy, to seal defects and restore the pipe’s integrity. This approach protects your yard, trims repair time, and adds years to your sewer system’s life—all while delivering reliable results.

Newer homes use durable PVC and ABS piping that offer smooth interiors and effective clog prevention at an affordable cost. Older homes use materials such as copper, Orangeburg, clay, cast iron, or lead, which require a licensed plumber’s inspection to confirm safety and performance. This clear distinction impacts maintenance and overall system reliability.

Red flags include persistent clogs, recurring sewage backups, and unexplained spikes in utility bills. Strong sulfur odors, bubbling drains, and visible sewage in the yard serve as unmistakable warning signs. These symptoms demand immediate professional inspection and repair to prevent further property damage and health hazards, ensuring the system operates safely.

All sewer line projects require permits because strict sanitary and biohazard regulations mandate regulatory approval. Homeowners must secure permits, incurring a specific permit fee of $200 in addition to contractor costs. A licensed professional or local building department manages the permitting process, ensuring the work complies with all legal requirements before the project begins.

A clogged sewer line is not covered by standard homeowner’s insurance policies because these policies exclude damage from regular wear, tear, and neglect. In cases of accidental damage—such as when tree roots block the line—certain policies provide coverage. Homeowners must review their policy details or consult with their insurance provider to confirm the coverage terms.

The Longmont, CO homeowners’ guide to sewer main install, replace or repairs

From average costs to expert advice, get all the answers you need to get your job done.