Scheduled To Volume
Cleaning intervals set to trade volume, so visits match the needs of the property.
Grease Trap Service & Installation In Frederick, MD
Grease trap service for Frederick restaurants and commercial kitchens — cleaning, maintenance and repair that keeps the line open and the health inspection boring.
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
Grease Trap Service in Frederick
Grease trap service in Frederick
For a restaurant, the grease trap is a health-code item before it is a plumbing one. It catches the fats, oils and grease — FOG, in the trade — that go down the kitchen drain and would otherwise set solid in the line and in the public sewer.
Mallick provides grease trap installation, cleaning, repair, maintenance and replacement across Frederick and Maryland, for restaurants and food-preparation businesses.
Schedule Grease Trap Service
Tell us what you need — we’ll be in touch fast.
Inspected Every Visit
Inspection included with every clean — the trap is already open.
Whole Lifecycle
Installation, repair and replacement as well as cleaning, from one contractor.
Trap overdue, or odours in the kitchen? Keep your kitchen operating.
Call (301) 804-6759Worth Knowing
How a grease trap works
A grease trap, or grease interceptor, is a tank the kitchen's wastewater passes through on the way out. Inside, it separates by weight: solid food settles to the bottom, fats and oils float to the top, and the effluent wastewater in the middle passes safely on to the sewer.
It works well, and it works only until the layers fill the tank. At that point FOG carries straight through into the line — which is the failure everybody eventually sees as a blocked kitchen drain rather than as a trap that was overdue.
Project control
How a grease trap job runs
The consequences of a neglected trap are worse than a blockage, which is why health codes treat it seriously. A trap that is not maintained produces bad odours through the kitchen, clogs the drain line, creates a genuine health hazard, and in the worst case contributes to a kitchen fire.
A trap failure can force a kitchen to close during service. Regular cleaning helps prevent that interruption.
Interval set to you
Interval set to your actual trade volume rather than a generic schedule — a busy kitchen fills a trap far faster.
Cleaned properly
Trap cleaned out fully, so FOG is removed rather than reduced to below the visible line.
Inspected while open
Inspected while open to identify developing faults.
Repairs planned, not forced
Any repair scheduled at your convenience while it is still small, rather than arriving as a shutdown.
Worth Knowing
Cleaning is also the inspection
Cleaning frequency depends on trade volume — a busy kitchen fills a trap far faster than a small one, and the interval should be set to the business rather than to a calendar.
The cleaning visit is also the natural moment to inspect. With the trap open we can check for problems that are starting rather than finished, which means a repair can be scheduled at your convenience while it is still small, instead of arriving as a shutdown.
Commercial work in Frederick
Frederick's commercial mix — restaurants and storefronts downtown, the Golden Mile corridor, flex and light-industrial space around the edges — mostly can't close for plumbing. We schedule around service hours, keep the work contained, and get kitchens and restrooms back to limit disruption to your operations.
Commercial jobs here also mean local permitting: the county on most sites, the City of Frederick inside town. Mallick has done commercial work in Maryland for nearly 30 years and handles the permit and inspection as part of the job.
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 grease trap call at 2pm or a burst line at 2am.
Google reviews
2,979
4.9 average across Gaithersburg, Frederick and Woodbine
Code & Permits
Commercial permitting in Frederick
Commercial plumbing work in Frederick is permitted and inspected locally: Frederick County Permits and Inspections for county sites, the City of Frederick's own office for properties inside town. WSSC, which governs our Montgomery County commercial work, has no role here.
We scope the permit requirements per job, file as part of the work and meet the inspector — so compliance is on us, not on your manager's to-do list.
Permit and inspection requirements per Frederick County Permits and Inspections. Requirements change — confirm current rules before work.
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
Grease Trap Questions, Answered
Still Stuck?
Talk To A Plumber
(301) 804-6759Someone picks up 24/7 — nights, weekends, and holidays included.
How often does a grease trap need cleaning?
It depends on trade volume rather than the calendar — a busy kitchen fills a trap much faster than a quiet one. We set the interval to your actual throughput, because a trap cleaned on a generic schedule is either failing early or being cleaned more often than it needs.
What happens if a grease trap is not maintained?
Bad odours through the kitchen, clogs in the drain line, a genuine health hazard, health-code problems, and in the worst case a contribution to a kitchen fire. Most of these present suddenly, and usually as a kitchen that has to stop during service.
How does a grease trap actually work?
Kitchen wastewater passes through a tank where it separates by weight: solids settle to the bottom, fats and oils float to the top, and the effluent between them passes on to the sewer. When the layers fill the tank, grease carries straight through into your line.
Do you install traps as well as clean them?
Yes — installation for a new kitchen or fit-out, plus repair, maintenance and replacement. Because cleaning visits include an inspection, problems are usually found while they can still be scheduled rather than as an emergency.
Can you work around our business hours in Frederick?
Yes — commercial work is scheduled around your operating hours where the job allows, and emergency response runs 24/7. Keeping a kitchen or a restroom open matters more than our convenience.
Who handles commercial plumbing permits in Frederick?
Frederick County Permits and Inspections for most county sites; the City of Frederick for properties inside town. We handle the permit and meet the inspector as part of the job.
How long has Mallick done commercial work in this area?
Mallick has done plumbing in Maryland for nearly 30 years, and commercial service — restaurants, retail, property management — has been part of the book for years, Frederick included.
Where We Work
Grease Trap 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
Commercial Plumbing Commercial plumbing service and repair for Frederick businesses — restaurants, retail and property managers — from a licensed crew that has done commercial work in Maryland for nearly 30 years.
Commercial Drain Cleaning Commercial drain cleaning for Frederick businesses — recurring maintenance or emergency clearing for kitchens, restrooms and floor drains that cannot stay down.
Sewer Cleaning Commercial sewer cleaning in Frederick — jetting and cabling on a schedule or on an emergency call, with camera verification that the line is actually clear.