Underground Plumbing · Clarksburg, MD

Underground Plumbing in Clarksburg, MD

Sewer, water & drain experts.

Drain cleaning, sewer line repair, trenchless replacement, hydro-jetting, camera inspections, leak detection, and water lines, the deep, difficult plumbing most companies avoid is exactly what we do best. Across Clarksburg and Montgomery County, we fix what is underground while protecting what is on top.

Trenchless optionsCamera diagnosis firstLicensed & insured
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Underground experts
Sewer, water & drains
What we do underground

Underground plumbing services

The deep, technical work that keeps your home flowing. Tap any service to see how we handle it.

Drain Cleaning

Fast, lasting clearing of slow and clogged drains, not just a quick snake and run.

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Sewer Line Repair & Replacement

Camera diagnosis, spot repairs, and full sewer line replacement built to last for decades.

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Trenchless Sewer Repair

Repair or replace your sewer line with little to no digging, protecting your yard and driveway.

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Hydro-Jetting

High-pressure water that scours grease, scale, and roots from the inside of your pipes.

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Sewer Camera Inspection

We send a camera down the line so you only pay to fix what is actually wrong.

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Leak Detection

Pinpoint leak detection for water and sewer lines, and pools too, with no guesswork or random digging.

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Water Line Repair & Replacement

Repair or replace your main water line, including trenchless options that spare your yard.

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Excavation & Site Work

Careful digging and site work for sewer, water, and gas line projects, with minimal disruption.

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Don't see it?

Repiping, gas lines, vent stacks, and more underground work. If it runs beneath your home, we handle it.

Call (301) 972-2223
A personalized experience

Honest help, start to finish

You deserve a plumber who listens, tells you the truth, and respects your home. We treat every house like our own.

1

We inspect & assess

We find the real problem and explain it in plain language, no scare tactics.

2

We give a fair estimate

Upfront, flat pricing on cost and time, so you approve everything before we start.

3

We deliver on our promise

On time, done right, and your home left better than we found it.

Why homeowners call us

The crew that does the hard digs

Underground work is where experience really shows. Our own trained, background checked crew handles sewer and water line excavation, trenchless repairs, and camera diagnostics every day, and we put your yard back the way we found it.

4.9

Over 500 five-star reviews from your neighbors
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From our community

What your neighbors say

4.8
Based on 518 Reviews
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S D.
July 16, 2026

Highly recommend Clarksburg Plumbing! They accommodated my schedule right away. John and Maddie were amazing!! They took care of my pipe repair quickly and efficiently! 10/10 recommend!

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Jim C.
July 16, 2026

John and Maddie were the ultimate professionals. Came on time. Clear estimate. Excellent work fixing my pressure relief valve, which had been improperly installed by another plumber. Clarksburg are my go to plumbers from now on.

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Ruth T.
July 15, 2026

Arrived on time, explained entire process, had plan a,b,c, in place, Did the best job I could ask for, and even show me the hole in my main line in the pipe. Highly recommend this company for all your plumbing needs.

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Pamela B.
July 15, 2026

Absolute best plumbers I have ever used. Needed them a few times recently and each time they were so professional, kind and resolved each problem the first time around. This last issue took them several hours to fix. They explained everything along the way and gave a very fair price for a lot of work. They also work very cleanly! I will never use another plumber!

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Al B.
July 9, 2026

I had Seth come out to change my outdoor spiked. He was in and out in no time and did a great job!

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Duh S.
July 7, 2026

Called yesterday, they came today, had a clogged kitchen sink. The service was quick and Professional. Great job!

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Praneeth M.
July 7, 2026

Garrett did a fantastic job snaking our clogged drain. He was incredibly professional, efficient, and made sure everything was completely clean before he left.

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Andrea B.
July 7, 2026

I needed a water valve installed for my new fridge and a new faucet installed in upstairs bathroom. Seth was amazing. He came out and really listened to me and my concerns. We even called the company that was going to deliver my new fridge so he would have a better understanding of what he needed to do his job. It made me feel at ease with the whole process. He is even coming back later in the week to install new fridge once it’s delivered. I will absolutely call them again.

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Shariq S.
July 6, 2026

Seth was great explaining the descaling process and performing it with precision.

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Sarah R.
July 1, 2026

Seth replaced our hose bib in the front yard and did a great job! It was hot out but he still took the time to make sure everything was good to go. I called Clarksburg Plumbing yesterday and they were able to come out next day. Very professional.

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B H.
June 30, 2026

Seth and his partner were very professional and did an awesome job fixing the main water valve. I highly recommend them.

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CandP H.
June 29, 2026

Amazing experience with Clarksburg Plumbing LLC! Our well pump needed replacement. Seth showed up right on time, was very professional, knew what he was doing and pricing was fare (they showed me all estimates upfront and explained everything). Any future plumbing needs and Clarksburg Plumbing will be my first call. I’ll also ask for Seth by name if I can get him!!

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Sarah B.
June 26, 2026

We had a pinhole leak suddenly appear in our outdoor hose bib, and Clarksburg Plumbing was able to provide next-day service, which we really appreciated. Our technician, John Brown, arrived right on time after giving us a 30-minute courtesy call. John quickly diagnosed the problem, explained everything clearly, and provided an accurate assessment of what needed to be done. He completed the repair in under two hours, and the quality of his work was excellent. Before leaving, he even took the time to share some helpful tips on how to prevent similar issues in the future. John was friendly, professional, knowledgeable, and efficient from start to finish. We couldn’t have asked for a better service experience. I highly recommend Clarksburg Plumbing and especially John Brown for anyone needing reliable, high-quality plumbing work.

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Neil D.
June 26, 2026

Great experience. Team arrived on time and were efficient. Seth explained everything with even gave me some tips and pointers to look out for moving forward. David made sure everything was cleaned up before they left.

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Erik H.
June 18, 2026

Extremely professional and did an amazing, quick job. Highly recommend!

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Eliot C.
June 12, 2026

Clarksburg Plumbing installed an external bib; after a couple of months there was a mechanical failure in the vacuum breaker. They responded within 24 hours, fixed it, no charge. Seth was prompt, courteous and efficient. We will be happy to use their services again.

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Joseph A.
June 10, 2026

Franklin and Cris — great job and great guys. Everything went smoothly with water line replacement. A tough job. Thanks for your hard work. Clarksburg Plumbing is the best!

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Rebecca B.
June 8, 2026

Charlie was an excellent technician. Thanks.

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Joshua R.
June 5, 2026

Cris and Franklin from Clarksburg Plumbing did incredible work at our home fixing an underground water service leak. They encountered complications but went to plan B efficiently and skillfully and got the job done well and in a timely manner. They also answered all our questions patiently and taught us a lot of why they made the decisions they made. We are very pleased with their work and plan to recommend them and all of Clarksburg Plumbing to our friends and neighbors.

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David N.
June 2, 2026

Franklin and Cris were especially helpful, informative and instructive. The rest of the instructive, polite and professional. Overall a good experience for me and my wife.

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Stephen C.
May 17, 2026

We had a clog in our septic line. The Clarksburg Plumbing crew located the troublesome area using a camera and then removed the clog and tested the line. They then remounted the toilet with a new wax ring and cleaned the area. Overall, a great experience!

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Tom W.
May 7, 2026

Seth did a great job today 5/7/2026 installing a new toilet for us. Second time he has helped us through Clarksburg Plumbing. Ask for him by name and you won’t be disappointed!! Thanks Seth!

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A E.
May 7, 2026

John Brown did a great job. He was on time, Professional and pleasant. Thanks

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peter D.
April 30, 2026

These guys are diligent, courteous and did a great job! They were friendly, helpful and thorough - I'd recommend Clarksburg plumbing any day of the week and twice on Sundays

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Seth K.
April 28, 2026

Seth was absolutely amazing! He was very courteous and knowledgeable about his profession. He arrived on time and worked the entire time. He kept me in the loop the entire way as to what he was doing. He diagnosed two leaks within our toilet system and readily fixed them. Clarksburg Plumbing should be honored to have such an amazing employee as him.

Good questions

Underground plumbing FAQ

Quick answers about sewer, water line, and trenchless work.

Trenchless repair fixes or replaces your sewer line with little or no digging, usually through one or two small access points. It is faster, cleaner, and protects your yard, driveway, and landscaping compared to a full dig.

Multiple slow or backed-up drains at once, gurgling toilets, sewage odors, or soggy patches in the yard often point to the main sewer line. We run a camera inspection to confirm exactly what and where the problem is.

Hydro-jetting uses high-pressure water to scour grease, scale, and tree roots from the inside of your pipes, far more thoroughly than snaking. For pipes in good condition it is very safe, which is why we camera the line first to confirm.

Not if we can help it. We use camera diagnosis to dig only where needed and offer trenchless options for many sewer and water line jobs. When digging is required, we restore the area as best we can.

It varies by material, but many lines last 40 years or more. Older Orangeburg, clay, or galvanized lines fail sooner. A camera inspection tells us the real condition and whether repair or replacement makes sense.

Yes. Along with water and sewer line leak detection, we locate pool and underground leaks using specialized equipment, so we find the problem without tearing everything up.

We serve Clarksburg, Germantown, Gaithersburg, Rockville, Damascus, Potomac, North Bethesda, and the surrounding Montgomery and Frederick County area.

Ready when you are

Trouble underground?

Let's Flow.

Backed-up sewer, soggy yard, or a failing line? Book online or call a real neighbor. We diagnose with a camera first, then fix it right, with trenchless options where we can.

Same-day service

Let's get started

(301) 972 2223

Available 24/7 for Clarksburg and beyond

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