Commercial Sewer & Excavation · Clarksburg, MD
Commercial Sewer & Excavation
Dig once, done right.
When a commercial sewer backs up or a buried line fails, the fix is rarely simple, and it is rarely a small dig. We handle commercial drain and sewer service plus the excavation behind it across Clarksburg and Montgomery County: cleaning, jetting, camera diagnosis, sewer and water line repair and replacement, utility trenching, and trenchless options that keep the dig small and your business open.
Sewer, water & utility linesExcavation & trenchlessLicensed & insured
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Underground experts
Sewer, lines & site work
The basics
Sewer and excavation, one crew
Commercial sewer problems and the excavation to fix them usually go together, and using two different companies for the diagnosis and the dig wastes time and money. We do both. We camera the line to find the real problem, clear or jet what we can, and when a line needs to be repaired or replaced, we handle the excavation, utility trenching, and site restoration ourselves, with trenchless options wherever they fit to keep the disruption to your property and your operation as small as possible.
What we do
Commercial sewer & excavation services
From a backed-up main to a full line replacement and the dig to do it, one crew handles it all.
Commercial Drain & Sewer Cleaning
Clearing backed-up and recurring drains and main lines in high-demand commercial buildings.
Sewer Line Repair & Replacement
Camera-diagnosed repair and full replacement of commercial sewer lines, dig or trenchless.
Hydro-Jetting
High-pressure jetting that scours grease, scale, and roots from commercial drain and sewer lines.
Excavation & Trenching
Careful digging and trenching for sewer, water, and utility line work, with proper shoring and safety.
Utility Line Excavation
Excavation for water, sewer, and gas service lines, new installs, repairs, and tie-ins.
Camera Inspection & Locating
We scope and locate the line first, so any dig is precise and you only pay to fix what is wrong.
How it works
Diagnose, dig smart, restore
We dig only where we have to, and we put your site back together when we are done.
1
Camera & locate
We scope the line and pinpoint the problem and its depth, so the dig is targeted.
2
Clear or plan the dig
We jet or clear what we can, and plan the excavation or trenchless repair for what we cannot.
3
Excavate & repair
We excavate safely, repair or replace the line, and coordinate around your operation.
4
Backfill & restore
We backfill, compact, and restore the site, including hardscape, as close to original as possible.
When to call
Signs you need sewer or excavation work
For a commercial property, an underground problem only gets worse, and more expensive, the longer it waits.
Recurring or multiple backups
Main-line backups that keep returning across a commercial building point to a deeper sewer problem.
Sewage odors or standing water
Odors inside or wet, sunken spots outside can mean a cracked or collapsed line underground.
Slow drains building-wide
Sluggish drainage throughout a property usually means a restriction in the main sewer line.
Failed inspection or violation
A flagged sewer or site issue needs diagnosis, repair, and proper restoration to clear.
New construction or tie-ins
New service lines, additions, and utility tie-ins need excavation done right and to code.
Old or undersized lines
Aging clay, cast iron, or undersized commercial lines crack, root, and clog and may need replacement.
Sewer trouble or a dig coming up? Let's scope it.
Book OnlineCall (301) 972 2223
What we dig
Sewer, water, and site work
If it runs underground at your property, we can diagnose it, dig it, and restore it.
Sewer Lines
Main sewer and lateral lines cleared, repaired, or replaced, with excavation or trenchless methods.
Water & Service Lines
Commercial water service lines excavated, repaired, replaced, and tied in to the main.
Site & Utility Work
Trenching, utility excavation, and site restoration for new builds, additions, and tie-ins.
Local, licensed, low-disruption
Why this matters here
Commercial excavation in Montgomery County means permits, utility locates, traffic and parking impacts, and inspections, and every day your lot is torn up is a day customers cannot reach you. As a local, licensed contractor, we handle the permitting and locates, dig smart with trenchless options where they fit, and restore the site fast so your business keeps running.
- We camera and locate before any dig
- We handle permits and utility locates
- Trenchless options keep digs small where possible
- We restore the site and work around your hours
Less digging
Ask about trenchless
For many commercial sewer and water lines, we can repair or replace with little digging. See how trenchless works.
The crew that does the hard digs
A crew you are glad to let in
Commercial sewer and excavation work takes the right equipment, the right permits, and real experience. Our own trained, licensed, background checked crew owns the whole job, from camera diagnosis to the dig to the final restoration, so you deal with one team, not three.
From our neighbors
What your neighbors say
Rating
Marina W.
August 26, 2026
The best plumbers in the Bethesda area! We have worked with over 4 companies and none could figure out our issue until we called Clarksburg. They are honest, flexible and communicative. Wonderful experience from start to finish.
Douglas F.
August 26, 2026
John and Maddy were excellent! Professional and beyond. Not only did the effectively fix our kitchen leak, but gave solid recommendations to fix other problems in advance. Appreciate them! Arrived on time, came quickly . We are definitely using this company for the rest of our remodeling planned. Thank you again. Doug Frankel Cost was no issue. They stand behind their work as they did today
Kevin
August 20, 2026
Knowledgeable technicians who explained everything in detail and did a great job installing my new water heater.
Lynn A.
August 18, 2026
We had our first experience with Clarksburg Plumbing & now we're sold! Charlie replaced our powder room toilet & did a great job. We moved to our house 3 years ago (& needed a new plumber) so we're happy to a great plumber now. Highly recommend!
Stephanie B.
August 13, 2026
Booked an apt with Clarksburg plumbing at 7am and by 9am they were at my house. Seth was a great tech that explained anything he was doing and answered my questions. would use Clarksburg plumbing again.
Susan F.
August 11, 2026
Highly recommend John Brown from Clarksburg Plumbing LLC! Yesterday John flushed and descaled our tankless water heater. We've gotten used to waiting and waiting for service people. That's not the case with John. He arrived pleasantly early for both the initial visit (for a no-cost estimate) and for the actual service call. He was personable, knowledgeable, and very patient with our many questions. He really helped us understand the ins and outs of this new-to-us technology of tankless water heaters. We're already recommending him to our neighbors!
Judith
August 10, 2026
John and Maddie were professional and customer focused. They completed several plumbing projects efficiently and verified my satisfaction with the work. John diagnosed a plumbing problem for future remediation. Great people and company.
Daniel J.
August 7, 2026
I had Clarksburg Plumbing come out for a minor home plumbing repair. Seth and Maddie were on time, friendly, and professional. They provided a free estimate, and I went ahead with the repair. The repairs took just under 2 hours and I was completely satisfied with the service. I will definitely use Clarksburg Plumbing again in the future. Thanks, Seth and Maddie!
Dennis D.
August 7, 2026
We had a very good experience with Clarksburg this year. A new fresh water pipe from the street and cleaning the waste pipe. From Brady in the office to John Brown and his team on site (Franklin and Chris) everything went smoothly, successfully, and on time. Would highly recomnend!
Ryan
August 7, 2026
Charlie S. was efficient and friendly. He also answered some of my plumbing questions which I greatly appreciate. I will be using Clarksburg Plumbing in the future.
Lisa W.
August 7, 2026
I recently used Clarksburg Plumbing for a condo repair of my main water turnoff valve and my outside hose bib. It required coordination with DC Water and the condo, and Clarksburg was extremely helpful, professional, and patient in the process. They came out a few times to evaluate and troubleshoot the issues, and then ultimately performed/made the repairs. Garrett and John Brown were the first to help, both very kind, knowledgable and highly skilled, and then Pablo (along with apprentice Tevon) made the final repairs. Not only did they do a great job, explaining everything to me in the process and checking after the water was restored to the condo, they also helped out one of the other owners that was having a sudden, luckily minor issue, as well. It’s a relief to know that I finally have a plumbing company that I can rely on for any future issues.
J C.
August 3, 2026
John Brown & Maddie did a great job with installing our new sump pump and battery backup--very informative, patient and thorough.
Daniel C.
August 3, 2026
Many thanks to John and Maddie for their excellent work and cheerful attitude.
Joye K.
July 31, 2026
We had a fire at our house 3-Jul-2025. Our contractor used Clarksburg Plumbing for all of our plumbing needs as we rebuilt our house. Pablo was with us from the beginning until all work on the house was completed a year later. Pablo was the lead plumber from Clarksburg Plumbing. He worked on the plumbing rough-in in December through February this past winter in bitter cold through the end of July 2026 when work was finally completed. Pablo quietly does his work. It’s clear that he is very skilled but he is not arrogant in any way. Rather, he is very engaging, takes suggestions under consideration and employs them as warranted, and is always kind even when I interrupt his work. Pablo represents Clarksburg Plumbing very well. It was my pleasure working with Pablo.
Prabhu P.
July 30, 2026
John & Maddie were great to get me scheduled for a potable water replacement
Erin M.
July 30, 2026
Properly identified the source of my leak after multiple other plumbers/companies couldn’t figure it out. Were thorough in explaining what they were doing, how they arrived to their determination, and gave advice on how to proceed with next steps that were outside their scope of operations. Thanks Pablo and Tevon
Jason R.
July 28, 2026
So grateful for you all, after 10 years and multiple plumbers your techs Garrett and Brady found the problem in 10 mins. Professional, friendly, knowledgeable, and we are more than satisfied with the work. Great company, great employees. We have a plumber now!
Ajay P.
July 23, 2026
We had a severe blockage in our kitchen sink drain, causing water to back up into both the sink and the dishwasher. Seth and Brady arrived on time, quickly identified the issue, and did an excellent job clearing the kitchen drain. They also fixed the dishwasher drain line, which is now working perfectly. They were professional, efficient, and courteous throughout the process. I highly recommend them to anyone needing plumbing services.
Abbie C.
July 22, 2026
Recently had an issue with my hot water heater in the restaurant I worked at. Clarksburg plumbing was quick and efficient and I was lucky enough to get John and Maddie as my techs! They were knowledgeable and helpful and fixed the issue in no time. I can’t recommend Clarksburg Plumbing enough and especially John and Maddie. They were honestly wonderful.
Anna F.
July 22, 2026
John and his assistant, Maddie, replaced an outside water valve and reviewed plumbing in a bathroom. They did excellent work, gave good advice and were friendly and nice. We were pleased with the work and will contact them at Clarksburg Plumbing for any plumbing needs in the future.
L C.
July 20, 2026
John was very knowledgable and provided all the details I needed to make my decision on what I wanted. Matty give me the exact estimates to consider. They were very curteous and professional. Thank you.
Chantell P.
July 20, 2026
John and Maddie arrived on time and were professional and kind! All issues were resolved without issue! Highly recommend!
David G.
July 19, 2026
Happy we called them. It is refreshing to deal with a company a company with great customer service and honest techs. Highly recommend you call them.
Christine K.
July 18, 2026
Seth was very professional, quick and efficient. Also kind and personable.
Good questions
Commercial sewer & excavation FAQ
What property managers, owners, and GCs ask us most.
Do you handle both the sewer diagnosis and the excavation?
Yes, that is the point of this service. We camera and locate the problem, clear or jet what we can, and when a line needs repair or replacement we do the excavation, utility trenching, and restoration ourselves, so you are not coordinating multiple companies.
Can you repair a commercial sewer line without tearing up the lot?
Often, yes. For many commercial sewer and water lines we offer trenchless repair or replacement that needs only small access points. We camera the line first to confirm trenchless is the right method.
Do you handle permits and utility locates for excavation?
Yes. We pull the required permits and arrange utility locates before any dig, and coordinate inspections, so the work is legal, safe, and documented.
Will excavation shut down my business?
We work to minimize it, scheduling around your hours, digging only where needed, using trenchless where possible, and restoring the site quickly so customers and staff can get back to normal fast.
Do you do utility and site work for new construction?
Yes. We excavate and install water, sewer, and service lines for new builds, additions, and tie-ins, coordinated with your general contractor and schedule.
Do you restore the site after digging?
We do. We backfill, compact, and restore the area, including hardscape where possible, leaving your property as close to how we found it as we can.
What areas do you serve?
We serve Clarksburg, Germantown, Gaithersburg, Rockville, Damascus, Potomac, North Bethesda, and the surrounding Montgomery and Frederick County area.
Underground experts
Let's get under your sewer problem.
Let's Flow.
Backed-up main, failing line, or a dig on the horizon? Book online or call a real person. We camera it first, then handle the sewer work and the excavation with one crew. Here 24/7 for emergencies.
Book OnlineCall (301) 972 2223