Emergency Repairs
Burst and frozen pipes answered 24/7 — damage is a function of how long it runs.
Piping, Repair & Re-Piping In Frederick, MD
Repiping and pipe repair for Frederick homes — replacing failing galvanized, polybutylene or aging copper with piping that matches the house and the water it carries.
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
Piping Service in Frederick
Piping in Frederick
Frederick County is a mix of old housing and new, so the pipe in an average house is as likely to be fifty years old as five. That single fact decides most of what a plumber finds behind a wall here, and it is why we do not assume a material before opening anything.
Mallick handles piping in Frederick and across Maryland — pipe repair, replacing damaged sections, new pipe installation and full repiping, at any size of job.
Schedule Piping Service
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Diagnosed Properly
Material and era identified before recommending work, because polybutylene and galvanised need different answers.
Minimal Disruption
Routes planned to open as little of the house as possible, and left cleaner than we found it.
Pipe burst, leaking, or pressure gone everywhere? Water damages for as long as it runs.
Call (301) 804-6759Worth Knowing
When a house needs re-piping rather than another repair
Repiping is worth considering when the house has moved from one leak to a pattern of them. Frequent leaks, pressure that has fallen everywhere rather than at one tap, discoloured water, or an original material like galvanised steel or polybutylene are the honest signals.
Galvanised steel corrodes inward until the bore is half what it was, which is why the pressure complaint usually arrives before the leak does. Polybutylene fails at the fittings and was installed widely enough locally to be worth checking for specifically.
Installation plan
How a piping job runs
PEX is flexible and can be routed through finished homes. Copper is durable. CPVC resists corrosion. The choice depends on the installation.
Layout, water quality and the access needed for installation guide the choice of pipe material.
Material identified
We identify the material and the era before recommending work. Galvanised, copper, CPVC and polybutylene each fail differently and are each worth a different answer.
Repair or repipe
Section repair and repiping assessed against the condition of the remaining pipework.
Routed to minimise damage
Routes planned to limit openings in finished walls and floors.
Tested and warrantied
Pressure tested on completion, the site left clean, and the installation warrantied for a year.
Worth Knowing
Burst and frozen pipes, at any hour
Any water at all damages a house, and it gets worse for as long as it runs. A slow leak inside a wall does its damage quietly; a burst pipe does it in an hour.
Burst and frozen pipes are covered 24/7, because the difference between a call at 11pm and a call at 8am is measured in drywall and flooring.
Plumbing in Frederick County, specifically
Frederick's housing stock runs the full range — houses downtown that have been replumbed once or twice over their lifetime, mid-century neighborhoods with the supply materials of their era, and newer construction out toward Green Valley and Linganore. The failures look different in each, and so does the right fix; a crew that works all three doesn't treat every house like the same job.
The other Frederick difference is water source. Inside town limits you're on municipal supply; outside it, many homes run on private wells — which changes pressure behavior, adds a pump and a tank to the system, and puts water chemistry into play. Mallick has run calls across Frederick County for years, dispatched around the clock from the Gaithersburg shop.
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 piping call at 2pm or a burst line at 2am.
Google reviews
2,979
4.9 average across Gaithersburg, Frederick and Woodbine
Code & Permits
Permits in Frederick work differently
Frederick sits outside the WSSC service area, so the permit process that covers Mallick's Montgomery County work does not transfer here. In the county, plumbing permits are issued and inspected by Frederick County Permits and Inspections; inside the City of Frederick, the city runs its own permit office.
Whether a job needs a permit comes down to scope — like-for-like fixture repairs generally don't, work that alters supply, drainage or gas generally does. We tell you which before work starts, and when one is required we handle it as part of the job.
Maryland plumbing licenses are issued at the state level, so the same license that covers our work further south covers Frederick County.
Permit and inspection requirements per Frederick County Permits and Inspections. Requirements change — confirm current rules before work.
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
Piping Questions, Answered
Still Stuck?
Talk To A Plumber
(301) 804-6759Someone picks up 24/7 — nights, weekends, and holidays included.
When should I consider repiping my home?
When leaks have become a pattern rather than an event, when pressure has dropped throughout the house, when water is discoloured, or when the original material is galvanised steel or polybutylene. Repiping fixes the cause; another patch repair fixes this week.
What type of piping material is best for my home?
PEX is flexible, copper is durable, and CPVC resists corrosion. We recommend materials based on layout, water quality and access.
Do you handle burst pipes after hours?
Yes, 24 hours a day, seven days a week. A burst or frozen pipe is doing damage for as long as it runs, so it is dispatched rather than booked. Knowing where your main shut-off is before that night is worth five minutes today.
Does one bad pipe mean the whole house needs doing?
Not necessarily. A single failed section in otherwise sound pipe is a section repair. We recommend whole-house repiping when the material or the pattern of failures says the rest is going the same way — and we will say which of the two we think you have.
Do you serve all of Frederick County, or just the city?
All of it. Mallick has run calls across Frederick County for years — the city, Green Valley, Linganore and the rural stretches between — with crews dispatched around the clock from the Gaithersburg shop.
Who issues plumbing permits in Frederick?
Outside city limits, Frederick County Permits and Inspections issues the permit and sends the inspector. Inside the City of Frederick, the city runs its own permit process. Either way, when a job needs one we handle it as part of the work.
My home is on a well. Does that change the work?
It changes the system, not the standard. A well adds a pump, a pressure tank and its own water chemistry to the picture, and our plumbers work on all of it — including the treatment equipment wells often need.
Where We Work
Piping 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 Full-service plumbing for Frederick homes — from older houses downtown to newer construction out toward Green Valley and Linganore — with licensed plumbers, warranties in writing and a 24/7 emergency line.
Leak Detection Leak detection for Frederick homes — finding the drip inside a wall or under a slab before it becomes a renovation, with repairs done by the same licensed crew.
Water Lines Water line repair and replacement in Frederick — from the meter or the well line to every fixture — done to code and inspected, whether the county or the city issues the permit.
Emergency Plumbing A plumbing emergency in Frederick doesn't wait for business hours — neither do we. Live dispatch 24/7, every day of the year, with licensed plumbers on call for the whole county.