Trading Again Fast
Service restored first, permanent repair scheduled second — limiting downtime is the priority.
Commercial Sewer Services In Gaithersburg, MD
Commercial sewer cleaning, inspection, repair, replacement and maintenance across Gaithersburg and Maryland — sequenced to get the property trading again first and do the permanent repair second.
4.9 from 2,979 Google reviews
30+ Years 30+ Years Serving Maryland
24/7 Service 24/7 Emergency Service
WSSC Licensed WSSC Licensed & Insured
Locally Owned Locally Owned and Operated
Commercial Sewer Service in Gaithersburg
Commercial sewer services in Gaithersburg
A commercial sewer line carries waste and wastewater from the property to the public system, and the section running across the property is the owner's responsibility — from the point it crosses the boundary, not from the building wall.
Mallick's commercial plumbers handle sewer service across Gaithersburg and Maryland: cleaning, inspection, repair, replacement and maintenance programmes for the properties where a failure closes the business.
Schedule Commercial Sewer Service
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Cleared Properly
Camera and jetter rather than rodding, so a grease-coated line is actually cleaned.
Scheduled, Not Emergency
Maintenance programmes that put the work on a Tuesday rather than a Saturday night.
Commercial main backing up? Get your operations moving again.
Call (301) 804-6759Go Deeper
Every Kind Of Commercial Sewer
The commercial problem is not really plumbing, it is downtime. A restaurant with a backed-up main is shut; an office building with a failed line is a health matter with a landlord attached to it.
We locate the fault, restore service where possible, and schedule the permanent repair around the property's operations.
Sewer Cleaning in Gaithersburg
Sewer and grease trap cleaning on a schedule that suits trading hours.
Sewage Pumps in Gaithersburg
Lifting waste to the main where a property sits below the sewer line.
Video Pipe Inspection in Gaithersburg
Camera inspection to locate a fault precisely before anything is opened.
Project control
How a commercial sewer call runs
Underground lines are hard to reach and harder to guess at. Video pipe inspection locates the source and nature of a blockage quickly, and hydro jetting clears with high-pressure water rather than boring a channel through the obstruction.
On commercial lines that distinction matters more than on residential ones, because commercial blockages are usually grease or scale coating the wall over months. Rodding those buys weeks. Jetting them buys years.
What is affected
We establish what is closed and what still works so we can prioritize the response.
Located on camera
Camera in to locate the fault and its nature precisely — commercial lines are too long to guess at.
Trading again first
Service restored first where possible, so the property can trade while the permanent repair is scheduled.
Fixed and scheduled
Permanent repair carried out at an agreed time, and a maintenance interval set so it is not a surprise again.
Worth Knowing
Scheduled beats emergency, every time
Scheduled sewer cleaning helps commercial properties address recurring buildup at a planned time.
For food service in particular, the line will need attention on a predictable cycle no matter what. The only decision is whether it happens on a Tuesday morning or on a Saturday night.
Why Mallick
Maryland Has Trusted Mallick For 30+ Years
WSSC-licensed and insured crews, and warranties in writing: one year on installations, 30 days on repairs. The same standard whether it is a commercial sewer call at 2pm or a burst line at 2am.
Google reviews
2,979
4.9 average across Gaithersburg, Frederick and Woodbine
Customer Field Notes
What Customers Remember After The Call
4.9
2,979 Google reviews across three Maryland locations
Field note 01 · Gaithersburg, MD
“Eric and Nick did a wonderful job.”
Very thorough and provided detailed explanation of what was needed to get our garbage disposal up and running.
Abbas and Koli were great technicians.
Quickly diagnosed the issue, thoroughly explained everything, and gave me a few options to move forward. I've had great experiences working with Mallick, highly recommend.
Chrissie Schenkel · Gaithersburg, MD Abbas came to our house for an emergency repair on a Saturday.
He was courteous and kind, he didn’t rush, and he worked hard to fix our problem and thoroughly investigate. It was hard to find a plumber who could do this on a Saturday at the last minute, and we appreciated Mallick’s and Abbas’s willingness.
Raj Nayak · Gaithersburg, MD Abbas Rahimiari was exceptionally professional, looking at our two plumbing problems, describing the underlying issues, fixing one immediately and explaining options on the other. Courteous, clear and efficient. And knowledgeable.
Gordon Schatz · Gaithersburg, MD I had a wonderful experience with Billy.
He was amazing and he was able to fix my issue with no concerns! 10/10! Thank you Billy.
Mia Barker · Gaithersburg, MD Excellent service and support from William Clem and Malick Plumbing.
Had a pinhole leak in a water service line. Found and fixed the problem … thanks so much.
Daryle Seckar · Gaithersburg, MD Roberto and Adelson were great to work with, efficient, and answered all questions. Top service and repair of water heater!
Jonathan Daly · Gaithersburg, MD
Fred and Luka were great!
They took the time to find the issue as well as helping me get opinions on future concerns as a new homeowner! Real experts and will work with them again!
Elijah Wadsworth · Woodbine, MD Abbas and Koli were fantastic.
They quickly identified and resolved our issue, and did a check to ensure there were no other sleeping issues. They were a pleasure to work with, respectful, and kind.
Kelley Barnaby · Gaithersburg, MD I received great service from both Ikem and CJ today.
They quickly identified the leak and fixed the issue. They also did a great job replacing some valves that needed replacing. They were very experienced and efficient. I have used Mallick several times and have always been pleased with their service.
Melissa Cavuto · Gaithersburg, MD Abbas and Erick were professional, knowledgeable and kind.
They inspected and guided me to make safe choices with my range that had a gas leak.
Andrea Huerta · Gaithersburg, MD Abbas and Bryan installed my new water heater.
There was a leak in my furnace and they fixed it also! The job was perfect. They had to install vents that were well done. They left no trace and the house was completely clean. The new water heater works like a charm. HIGHLY RECOMMEND this team and Mallick.
Janet · Gaithersburg, MD Kyle was so helpful in helping my husband and I fix the water pressure in our house. Kyle was very well versed and experienced, providing great options for future improvements to water filtering. I would highly recommend his services to anybody struggling with plumbing issues.
Azusena Herrera Tapia · Gaithersburg, MD
Every quote above comes directly from Mallick’s current Google Business Profile record.
Read more customer storiesCommon Questions
Commercial Sewer Questions, Answered
Still Stuck?
Talk To A Plumber
(301) 804-6759Someone picks up 24/7 — nights, weekends, and holidays included.
Which part of the commercial sewer line am I responsible for?
You are responsible for the line from the point it crosses onto your property, not from the building wall. That surprises a lot of commercial owners, because the section under a car park or forecourt is usually theirs and is usually the part that fails.
How do you clear a commercial sewer blockage?
Video pipe inspection to locate the blockage and its nature, and hydro jetting to clear it with high-pressure water. Commercial blockages are usually grease or scale coating the pipe wall, which rodding bores through rather than removes — so it comes back.
Do you offer scheduled maintenance rather than call-outs?
Yes. Scheduled cleaning can help food-service and other high-volume properties manage recurring buildup around operating hours.
Can you work around our business hours?
Where the fault allows, we restore service first and schedule the permanent repair around your operations.
Where We Work
Commercial Sewer Service Across Maryland
Bethesda Rockville Silver Spring Germantown Potomac Olney Clarksburg Damascus Chevy Chase North Potomac Frederick Woodbine Columbia Ellicott City Aspen Hill Boyds Burtonsville Darnestown North Bethesda Poolesville Takoma Park Wheaton–Glenmont White Oak Green Valley Linganore Washington, DC College Park
Related Services
Commercial Plumbing Commercial plumbing for restaurants, retail, offices and multi-unit buildings across Gaithersburg and Montgomery County — grease traps, backflow prevention, storm drainage, commercial water heaters and 24/7 emergency response.
Sewer Cleaning Scheduled commercial sewer and grease trap cleaning across Gaithersburg and Maryland — video inspection and hydro jetting, on an interval set by what the property actually produces.
Commercial Drain Cleaning Commercial drain cleaning in Gaithersburg for restaurants, food service, multi-tenant and industrial properties — hydro jetting or mechanical clearance matched to what is actually in the line.
Residential Sewer Lines Sewer line repair and sewer main replacement in Gaithersburg, across Montgomery County, Maryland and D.C. — inspected on camera first, replaced trenchless where the run allows, and backups answered 24/7.