Plumbing Expertise
Licensed plumbers assess the house-side plumbing and connected drain lines.
Septic System Service & Repair In Gaithersburg, MD
Plumbing service and repairs for septic-connected homes in Gaithersburg, Woodbine and surrounding Maryland communities. We do not install new septic systems or provide septic tank pumping.
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
Septic Service in Gaithersburg
Septic systems in Gaithersburg and the rural edges
A septic system processes a property's waste on site, for houses not connected to a municipal sewer. Most of Montgomery County is on WSSC sewer — septic here belongs to the rural edges, out toward Woodbine and the Frederick and Howard County boundaries.
Mallick provides plumbing service and repairs for homes connected to septic systems. We do not install new septic systems or provide septic tank pumping. Call to discuss the plumbing issue so we can confirm the work is within our scope.
Schedule Septic Service
Tell us what you need — we’ll be in touch fast.
Clear Service Scope
We confirm the work we can provide before a visit is scheduled.
Know Who To Call
Septic tank pumping and new septic system installation require a separate provider.
Slow drains or backups at a home on septic? Call to discuss plumbing service.
Call (301) 804-6759Worth Knowing
How a septic tank works
A septic tank separates what arrives into three layers. Solids settle to the bottom, lighter material floats to the top, and the liquid between them passes out into the drain field, where the ground finishes the job.
Septic tanks need periodic pumping by a septic pumping provider. Mallick does not offer that service; our work focuses on the plumbing and drain lines connected to the system.
Response protocol
How a septic call runs
A slow drain or backup can involve the house plumbing, the line to the septic tank or the septic system itself. Tell us what is happening so we can determine whether a plumbing service visit is appropriate.
If the job requires septic pumping or a new septic system, you will need a provider that offers those services.
Where the fault is
You describe the symptoms and location so we can confirm whether a plumbing visit fits the problem.
Plumbing assessed
We assess the accessible plumbing and drain lines to help identify the cause of the problem.
Scope explained
We explain which plumbing repairs are appropriate and when a separate septic provider is needed.
Repaired and warrantied
Authorized plumbing repairs are completed by licensed plumbers and the work is explained before we leave.
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 septic 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
Septic Questions, Answered
Still Stuck?
Talk To A Plumber
(301) 804-6759Someone picks up 24/7 — nights, weekends, and holidays included.
Does Mallick install new septic systems or pump septic tanks?
No. Mallick does not install new septic systems or pump septic tanks. We provide plumbing service and repairs for septic-connected properties and confirm the scope of work when you call.
What are the signs of a septic problem?
Slow drainage throughout the house, gurgling, sewage odours near the tank or field, wet or unusually green patches over the drain field, and backups at the lowest fixture. Standing water above the field is a late sign and usually means the field itself is affected.
What work can Mallick handle at a home with a septic system?
We assess plumbing and drain-line problems at homes connected to septic systems. A backup may have a house-side cause, so we discuss the symptoms and confirm the work needed. Septic tank pumping and installation of a new septic system are outside our services.
Which areas do you cover for septic work?
We serve septic-connected homes in our Maryland service area, including Woodbine and communities in Montgomery, Carroll, Howard and Frederick Counties. Call with your location and the plumbing issue so we can confirm service availability.
Where We Work
Septic 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
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