Plumbing
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Emergency Plumbing
24 hour emergency plumber service.
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Gas Lines
Natural gas line installation, repair and replacement.
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Leak Detection
Leak detection and slab leak repair.
District of Columbia
Plumber in Washington, DC
Mallick crews run into Washington regularly, with the same licensed team and 24/7 dispatch that covers the Maryland side of the line.
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
Plumbing in Washington
Trusted Plumbing Service In Washington
Much of the District's housing is rowhouse stock that has been standing — and being re-plumbed piece by piece — for a century or more. That history lives in the walls: mixed pipe materials, modified drain runs, and original cast iron that has outlasted several kitchens. Working on it well means diagnosing what is actually there, not what the era suggests should be.
The District also runs its own regime end to end: DC Water bills the service, and the DC Department of Buildings issues the permits. Neither works like the Maryland counties next door, and we handle the difference as part of the job.
District rowhouses concentrate a century of plumbing decisions into narrow walls. Freeze season finds supply runs in unheated cellars, old cast iron stacks shed scale into shared drain lines, and every renovation inherits whatever the last three did.
Mallick crews cross into the District daily from the Gaithersburg shop, upper Northwest most of all — 24/7 dispatch, DC Department of Buildings permits handled when the job needs one, and written warranties on the work.
- Water & sewer in Washington
- DC Water bills water and sewer for District addresses. Source: DC Water — dcwater.com
- Permits in Washington
- The DC Department of Buildings issues plumbing permits in the District. Mallick handles the permit as part of the job. Source: DC Department of Buildings — permits hub, dob.dc.gov
Need a plumber in Washington today?
24/7 emergency dispatch · Licensed & insured · Warranties in writing
What We Do Here
Our Services In Washington, DC
Drain & Sewer
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Drain Cleaning
Drain cleaning.
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Sewer Lines
Sewer line repair and sewer main replacement.
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Hydro Jetting
Hydro jetting.
Water Heaters
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Tank
Repair, replacement and installation for gas, electric and high-efficiency tank water heaters.
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Tankless
Tankless water heater installation, repair, replacement and maintenance.
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Heat Pump (Hybrid)
Heat-pump and hybrid water-heater installation, replacement, repair and maintenance.
Water Quality
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Water Softeners
Water softener installation, repair and servicing.
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Filtration Systems
Whole-house water filtration systems.
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Water Testing
In-home water analysis for well and municipal water.
Commercial Plumbing
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Commercial Water Heaters
Commercial water heater installation, repair, maintenance and replacement.
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Drain Cleaning
Commercial drain cleaning.
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Backflow Prevention
Commercial backflow prevention.
From The Dispatch Log
What We Get Called For In Washington
Rowhouse Drain Problems
Shared and stacked drain runs mean one house's clog is sometimes the block's. We camera first, clear what is actually blocked, and show you the footage.
Drain cleaning and clearingOld Supply Line Failures
Mixed generations of pipe fail at their joints and transitions. We diagnose what is actually in the wall before recommending work.
Leak detectionWater Heater Swaps
Tight utility closets and rooftop vents make DC swaps a planning job. Sized right, vented right, permitted right.
Water heater replacementWhy Here
Why Washington Homeowners Call Mallick
Close By
Washington is about 21 miles from our Gaithersburg office, and emergency dispatch runs 24 hours a day, every day.
Rowhouse Fluent
Party walls, stacked systems and a century of piecemeal re-plumbing — we diagnose what is actually in the wall before recommending work.
Permits Handled
The DC Department of Buildings issues plumbing permits in the District. Mallick handles the permit as part of the job.
Warrantied In Writing
One year on installations, 30 days on repairs — in writing, backed by the same crew that did the work.
“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.
4.9
from 2,979
Google reviews
Dispatch Desk
Schedule Service In Washington
Send the form and the office calls you back to book a time — or call now and a real person answers, day or night. Emergency work in Washington carries the same warranties as booked work.
- years in Maryland
- 30+ years in Maryland
- licensed & insured
- WSSC licensed & insured
- emergency dispatch
- 24/7 emergency dispatch
Schedule Service in Washington
Tell us what you need — we’ll be in touch fast.
Questions
Plumbing Questions From Washington
Do you actually work in DC, or just Maryland?
Yes — Mallick crews cross into the District regularly, and the emergency line is answered 24/7. Upper Northwest neighborhoods near the Maryland line are the most routine runs.
Who issues plumbing permits in Washington, DC?
In the District, plumbing permits come from the DC Department of Buildings, and DC Water is the utility — a different regime from the Maryland counties. When a job needs a permit, we handle the paperwork as part of the work.
Do you work on DC rowhouses?
Rowhouse plumbing is its own discipline — shared party walls, stacked systems, old cast-iron drains and supply lines that have been modified many times over a century. We diagnose what is actually in the wall before recommending work, and camera the drain side rather than guessing.
24/7 emergency service in Washington, DC
Someone answers, day or night.
Serving Northwest DC from Maryland · Maryland license MD 19572