Diagnosed, Not Guessed
A camera goes down the main line before recommending work. You see what we found.
Drain Cleaning & Clog Removal In Bethesda, MD
Drain Cleaning service for homes and businesses in Bethesda, MD, backed by Mallick Plumbing & Heating's licensed team and 24/7 emergency availability.
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
Drain Cleaning Service in Bethesda
Drain Cleaning in Bethesda: local conditions
Bethesda is close-in Montgomery County, and Mallick has held a license in this county for over thirty years.
Water and sewer here are WSSC, which means the permit and the inspection on any supply or waste work go through WSSC rather than the county or the city.
A lot of Bethesda housing predates the materials plumbers use today. Homes from the early and mid-1900s often carry some mix of original galvanized supply, cast-iron stacks and clay sewer laterals — systems that work until they suddenly don't. Mature street trees make root intrusion on the sewer side a routine finding, which is why we camera a line before anyone proposes digging it up.
Season by season, Bethesda's older housing shows its age in predictable ways: hard freezes find the uninsulated runs in stone foundations and additions, spring rain finds the clay sewer joints roots found first, and original galvanized supply quietly narrows until the shower pressure makes the decision for you.
Bethesda sits well inside the core dispatch area — about 13 miles from the Gaithersburg shop — with 24/7 emergency response and the same written warranties on every job: one year on installations, 30 days on repairs.
Schedule Drain Cleaning Service
Tell us what you need — we’ll be in touch fast.
Matched To The Clog
Cabling or jetting chosen against the clog's composition — grease, hair and roots are not the same job.
Kind To The Line
Bio-Clean for maintenance — natural bacteria and enzymes, not something that attacks the pipe.
Drain backing up or several running slow? Do not run more water.
Call (301) 804-6759Worth Knowing
Drain cleaning in Bethesda
Mallick provides drain cleaning in Bethesda and across Montgomery County for everything from a single slow sink to a sewer line backing up through the whole house. Which of those you have changes the tool completely, so we establish that before anything goes down the pipe.
One fixture draining slowly is usually a clog in that fixture's line. Several at once, or gurgling when another fixture runs, points at the main — and that is a different job with a different answer.
Response protocol
How a drain cleaning call runs
Clogs are not interchangeable, so the method is matched to the composition. Kitchen drains clog with grease and food; bathroom drains clog with hair and soap; main lines clog with tree roots or a section of pipe that has failed.
Cabling clears a path through a blockage. Hydro jetting cleans the pipe wall. On a main line we inspect first to check whether structural damage needs repair.
One drain or the main?
We establish whether this is one fixture or the main line, because that changes everything that follows.
Camera before cable
On a main line, a camera inspection helps identify structural damage before cleaning begins.
The right tool
Cabling or hydro jetting is selected for the blockage and explained before work begins.
Verified, not assumed
We show you the line afterwards where it matters, so you know if this is closed out or coming back.
Worth Knowing
Why we do not reach for the supermarket bottle
For ongoing maintenance we use Bio-Clean, an environmentally friendly drain and waste treatment built on natural bacteria and enzymes. It digests the organic build-up that lines the pipe rather than attacking the pipe itself.
That is the opposite of the supermarket bottle, which treats every clog identically, frequently achieves nothing, and can damage the line while achieving it. If a drain has needed clearing more than once in a year, the answer is a camera rather than more chemicals.
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 drain cleaning call at 2pm or a burst line at 2am.
Google reviews
2,979
4.9 average across Gaithersburg, Frederick and Woodbine
Ways To Save
Current Offers On This Job
$32
Off
Any Plumbing Service
$1 off for Each Year We’ve Been in Business!
Limit 1 offer per customer, cannot be combined with other offers, residential use only, must be presented at time of service. Not applicable to dispatch charge. Only applies for work performed. Valid Jan 1 – Dec 31, 2026.
Our maintenance plan
The Service Contract Of Choice
A 12-month annual maintenance contract for your home’s plumbing. The team is small enough to give you personalized attention and large enough to handle whatever comes up.
What stands behind every contract
12-month coverage term
24/7 emergency line
Licensed, trained technicians
Payment plans available
2-Year Extended Warranty for Furnished & Installed Equipment
6-Month Repair Warranty
Levels are matched to your home
The office confirms the current contract levels and details before you commit — call and the team will walk you through the options.
12-month term · Sign up by phone
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
Drain Cleaning Questions, Answered
Still Stuck?
Talk To A Plumber
(301) 804-6759Someone picks up 24/7 — nights, weekends, and holidays included.
Does drain or sewer work in Bethesda need a permit?
WSSC Water issues the plumbing and gasfitting permit and performs the inspection. Mallick pulls the permit as part of the job.
Is my clog in one drain or the main line?
One slow fixture is usually a clog in that fixture's own line. Several draining slowly at once, gurgling when another fixture runs, or water backing up into a tub points at the main sewer line instead — which is a different job, and one we put a camera down before recommending work.
What is the difference between cabling and hydro jetting?
Cabling cuts through a blockage to restore flow. Hydro jetting uses high-pressure water to clean the pipe wall and may be appropriate for heavy or recurring buildup.
Does store-bought drain cleaner work?
Generally no. It is sold as a solution to every clog and treats them all the same way, which is why it so often does nothing — and it can damage the line while doing nothing. It is also the thing we most often get called out behind.
Why does the same drain keep clogging?
Repeated clogs may indicate roots, a sagging section or deteriorating pipe. A camera inspection helps identify the cause.
Where We Work
Drain Cleaning 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
Drain & Sewer Drain cleaning, sewer line repair, hydro jetting, video inspection and trenchless replacement across Gaithersburg, Rockville and the surrounding Maryland area — diagnosed with a camera before anyone digs.
Hydro Jetting Hydro jetting in Gaithersburg and the surrounding areas — high-pressure water that takes grease, scale and roots off the pipe wall instead of boring through them, with a camera inspection first.
Video Pipe Inspection Video pipe and sewer scope inspection across Gaithersburg and Maryland — a camera in the line instead of an educated guess, for recurring faults, pre-purchase checks and any repair worth getting right first time.