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Top-Rated Sewer main install, replace or repairers in Severn - Updated Nov 2026

Avatar for Mahon Plumbing
Mahon Plumbing
4.6(
199
)
Sewer Main - Install, Replace or Repair

Serving Severn, MD and surrounding areas

Approved

In business since 1994

Emergency services offered

Warranties offered

"Recently used Mahon Plumbing for various plumbing needs around my house. As a new homeowner you can be skeptical on what’s behind your walls or in this case pipes. Mahon did an initial sewer line inspection and called them back to swap out toilets and install natural gas in my backyard for a grill and fire table. They were professional, honest, and extremely knowledgeable about all phases of my projects. I would recommend Mahon Plumbing for all of your plumbing needs!"
Tankless water heater installation
Tankless Water Heater Installation
Commercial drain cleaning
Sewer Line Video Inspection
Water heater replacement

+30

Response time7 hrs
Response rate100%
Recommended by92%of homeowners
Avatar for Remedy Plumbing and Drain Cleaning
Remedy Plumbing and Drain Cleaning
4.8(
78
)
Sewer Main - Install, Replace or Repair

Serving Severn, MD and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"Owner came out promptly when we called for a sewer line backing up into our basement. His quote was better than another we received an hour before, and he had the equipment ready to go immediately. He cleared the blockage and advised us to pursue a video inspection because of a snag in the line (possible rupture in the pipe and/or tree root) that likely contributed to the backup."
Additional Photos
Additional Photos
9 neighbors recently requested a quote
Recommended by76%of homeowners
Avatar for Mr. Rooter of Maryland
Mr. Rooter of Maryland
4.3(
1,100
)
Sewer Main - Install, Replace or Repair

Serving Severn, MD and surrounding areas

Approved

In business since 1968

Free estimates

Emergency services offered

"This company was highly rated on Home Advisor. That is why I hired them. They sent a **junior** plumber to rework the pipes in the shower of a 60-year-old house. I also asked that a new faucet be installed in the lower-level bathroom. In the case of the bathroom repiping, a couple of mistakes were made according to the tile installer who had to ask for a correction. In the case of the lower bathroom faucet, I was told that because of the pedestal sink, a portion of the bathroom wall would have to be replaced. I certainly did not want that to occur to replace a faucet. Ultimately, this inexperienced plumber asked the main office to send another plumber to do the work and determine how to save the wall in the process. Day 2, a more experienced plumber came, changed the faucet without further adieu. The total cost of all of this far exceeded what I expected."
Mr. Rooter of Baltimore fleet
Response time50 mins
17 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Roto-Rooter Plumbing & Water Cleanup - Baltimore
Roto-Rooter Plumbing & Water Cleanup - Baltimore
4.2(
662
)
Sewer Main - Install, Replace or Repair

Serving Severn, MD and surrounding areas

Approved (Corporate)

In business since 1935

Free estimates

Emergency services offered

When you need an emergency plumber in Baltimore, MD or a drain cleaner, call Roto-Rooter Plumbing & Water Cleanup. Your fast & reliable plumber can fix any plumbing problem, including sump pumps, toilet repair, faucet repair, faucet replacement, garbage disposals, water heaters, bathtubs, showers, and outside faucets. Roto-Rooter is best known for drain cleaning & sewer cleaning. We fix drain clogs, clogged toilets or sinks, blockage of main sewer lines, slow draining shower and bathtub drains, sewer lines and leaking or burst pipes. We also specialize in water damage restoration & water cleanup services. We can fix and clean up your flooded basement too. Roto-Rooter is a 24-hour plumber near you and provides emergency service.

Roto Rooter- Baltimore
Roto Rooter- Baltimore
Roto Rooter- Baltimore
Roto Rooter- Baltimore
Roto Rooter- Baltimore

+6

Recommended by80%of homeowners
Avatar for Len The Plumber Heating & Air, LLC
Len The Plumber Heating & Air, LLC
4.2(
1,348
)
Sewer Main - Install, Replace or Repair

Serving Severn, MD and surrounding areas

Approved (Corporate)

In business since 1996

Credit card accepted

Customers say: Super punctual

"Inside and outside repairs were handled efficiently and with extra care. House rules followed because of pets. Costs were presented, reviewed and approved prior to repairs. I would rate this project 5 stars"
Additional Photos
10 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Pasadena Premier Plumbing LLC
Pasadena Premier Plumbing LLC
5.0(
5
)
Sewer Main - Install, Replace or Repair

Serving Severn, MD and surrounding areas

Approved

In business since 2016

Emergency services offered

Warranties offered

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job is. \n

Install new toilet
Install new toilet
Install new toilet
Install new toilet
Replace exterior sewer

+11

Response time4 hrs
Response rate100%
...
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FAQs for sewer main install, replace or repair projects in Severn, MD

Most trenchless sewer line replacements can be completed within one to three days, though this varies based on your situation. Simple repairs on accessible lines might be finished in hours, while complex systems or challenging soil conditions could extend the timeline. The reduced excavation requirements result in faster completion compared to traditional trenching methods.

Trenchless pipe lining may reduce the interior diameter of your pipes, which could affect flow capacity in already narrow lines. This method also requires the existing pipe to maintain sufficient structural integrity to support the new liner. Severely collapsed sections, major joint separations, or completely misaligned pipes might not be suitable candidates for lining and could require alternative approaches.

Trenchless sewer pipe liners are rated to last up to 50 years when properly installed and maintained. Actual longevity depends on installation quality, usage patterns, and environmental factors like soil movement or tree root intrusion. Regular maintenance and avoiding problematic disposal practices (like flushing non-biodegradable items) can help maximize your system's operational lifespan.

Trenchless technology availability varies by region, with greater accessibility in metropolitan and suburban areas where specialized contractors operate. Some rural locations may have limited access to trenchless equipment and expertise. Local regulations and soil conditions also influence availability. A professional assessment of your property and local contractor options will determine if trenchless methods are feasible for your specific location.

Professional video inspection provides the most reliable assessment of whether your sewer issues suit trenchless repair. Generally, pipes with moderate damage, like small cracks, minor leaks, or partial blockages, respond well to trenchless techniques. Completely collapsed sections, severe misalignments, or extensive structural failures might require traditional excavation. Consulting with contractors who offer both methods ensures you receive unbiased recommendations.

Quality trenchless sewer replacement often includes a workmanship guarantee from the contractor. The specific terms vary by company and region, but many professionals stand behind their installation for at least one year. Material warranties may extend longer, depending on the pipe products used. Always request written warranty information before hiring, and understand exactly what's covered and what might void your protection.

The Severn, MD 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.