Repaired Where Sensible
Repair recommended wherever a repair genuinely holds — most fixtures do not need replacing.
Bathroom Plumbing Repair & Installation In Gaithersburg, MD
Bathroom plumbing repair, installation and maintenance across Gaithersburg and surrounding Maryland communities, from leaking fixtures and clogged drains to planned upgrades.
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
Bathroom Plumbing Service in Gaithersburg
Complete bathroom plumbing service
Bathroom plumbing has to support sinks, toilets, tubs and showers reliably every day. Mallick repairs leaks, drainage problems, failing fixtures and supply issues across Gaithersburg and surrounding Maryland communities.
The team works on original cast iron and galvanized piping as well as copper, PVC and PEX, so the recommendation accounts for the system behind the fixture rather than treating every bathroom alike.
Schedule Bathroom Plumbing Service
Tell us what you need — we’ll be in touch fast.
The Cause, Not The Symptom
Pressure checked on recurring faults, so the new part does not fail for the old reason.
Emergency Cover
A bathroom out of use is covered 24/7, not booked for the next available slot.
Toilet won't flush, or the tub won't drain? A bathroom is not optional.
Call (301) 804-6759Go Deeper
Every Kind Of Bathroom Plumbing
A recurring clog, low pressure, water staining or a toilet that will not stop running can point to more than the visible fixture. The first step is locating the actual fault and explaining whether repair, maintenance or replacement makes sense.
Bathroom Fixture Repair in Gaithersburg
Repair for leaking, running or poorly performing bathroom fixtures.
Sink, Tub & Toilet Installation in Gaithersburg
Professional installation for sinks, tubs, toilets and their connections.
How the call runs
How a fixture repair runs
Mallick installs and replaces sinks, faucets, toilets, tubs and shower plumbing, and can coordinate the plumbing portion of a larger bathroom upgrade. Work is completed to applicable Maryland and local plumbing requirements.
Inspected, not guessed
The fixture is inspected properly — valve, seal, cartridge and trap — rather than diagnosed from the symptom at the outlet.
Pressure ruled in or out
House pressure checked when the fault is a recurring drip, because high pressure is the reason repairs do not hold.
The honest recommendation
Repair and replacement options explained with the reasons for each recommendation.
Finished and warrantied
Work completed to code, the area left clean, and repairs carrying our 30-day warranty.
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 bathroom plumbing 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
Bathroom Plumbing Questions, Answered
Still Stuck?
Talk To A Plumber
(301) 804-6759Someone picks up 24/7 — nights, weekends, and holidays included.
What bathroom plumbing problems require a plumber?
Persistent slow drains, recurring clogs, water stains, low fixture pressure, leaks around a fixture and toilets that keep running can all indicate a fault that deserves professional diagnosis.
Can Mallick install new bathroom fixtures?
Yes. Mallick installs and replaces sinks, faucets, toilets, tubs, showers and the associated supply and drain connections.
Do you provide emergency bathroom plumbing service?
Yes. Active leaks, overflows and a bathroom that cannot be used are covered by Mallick's 24/7 emergency service.
Where We Work
Bathroom Plumbing 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
Plumbing Repair, replacement and installation across every plumbing system in the house — WSSC-licensed plumbers, warranties in writing, and 24/7 emergency service throughout Montgomery, Carroll, Howard and Frederick Counties and parts of NW Washington DC.
Kitchen Plumbing Kitchen plumbing in Gaithersburg and surrounding areas of Maryland for leaks, blocked drains, faucets, disposals and range gas lines. Same-day repair appointments may be available based on capacity, with 24/7 emergency service.
Drain Cleaning Drain cleaning in Gaithersburg and Montgomery County — cabling, hydro jetting and camera inspection matched to what the clog is actually made of, with Bio-Clean for ongoing maintenance.