Expert Plumber's in Maryland, DC and Northern Virginia

Now Serving Howard, Montgomery & Surrounding Counties!

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Complete Plumbing Services for Homes and Businesses

Plumbing Services in Maryland, DC and Northern Virginia

National Plumbing and Mechanical Services is proud to offer complete plumbing services in Maryland, DC and Northern Virginia for homes and businesses. We are your go-to plumbing company for emergency plumbing, gas lines, residential upgrades, commercial maintenance, and more.

Leaks, clogs, and burst pipes don’t wait. Get emergency plumbing repairs from National Plumbing for water heater malfunctions, pipe leaks, sewer backups, faucet repairs, and much more. → Learn More

Never again worry about your home water system, sudden leaks, keeping up with water filter maintenance, losing water to left-on taps, or experiencing unexpected frozen or burst water pipes. The DROP water system monitors your home’s water, water temperatures, water flow, and more so you can get live alerts on the status of your water anywhere, any time. → Learn More

Professional drain cleaning is a fast, efficient way to stop wastewater from backing up in your pipes. Clogged drains can lead to leaks, water damage, and even mold growth out of sight. Get drain cleaning maintenance from our professionals. → Learn More

No more leaky faucets, endless drips, or out-of-style faucets. A new faucet installation from professional plumbers is a fast way to improve your aesthetics and function. → Learn More

New garbage disposal replacements in Maryland can help with clogged drains, foul odors, and constant repairs. Get a powerful and reliable garbage disposal that works effortlessly, leaving your sink and pipes clear and odor-free. → Learn More

Professional gas line installations professional plumbers ensure there are no leaks, you have regular pressure regulation, and secure valves for reliable shut-off when needed. Get gas plumbing for your barbecues, grills, fireplaces, and other appliances.  → Learn More

Maintain and upgrade your outdoor kitchen plumbing today. Get pipe fittings, propane and natural gas, outdoor sinks, outdoor drains, BBQ stations, and more. → Learn More

Don’t let your sump pump fall into damage or disrepair. A properly functioning sump pump stops flooding of your basement and low lying areas of your homes. → Learn More

National Plumbing and Mechanical Services is proud to provide tankless water heater services for water heater installations, operating maintenance, and repairs. → Learn More

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Why Choose Us?

National Plumbing Works For You

National Plumbing and Mechanical Services was born out of National Water Services, a company that has been providing water services to Maryland for over 45 years. We have hundreds of 5-star reviews and decades of experience that we bring to every job and every customer.

Trust Our Master Plumbing Repair Experts

With over 45 years of experience in water repair and management, we are proud to offer dedicated master plumbers to homes and businesses. Get affordable pricing, competitive quotes, and quality materials that last.

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Accurate Plumbing Repairs At Fair Prices - Our Promise To You.

Emergency Services

Don't let leaks or clogs get the best of you -- call for emergency plumbing repairs 7 days a week, 365 days a years!

Satisfaction Guarantee

We take our customer service seriously -- we make sure you're happy with the job before we sign off

Competitive Pricing

All of our plumbing services are priced at affordable rates so you can get quality jobs on any budget

45 Years of Experience

We started off as National Water Service providing water treatment and have continued to expand to meet the needs of our clients

Our Reviews

Based on 379 reviews
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Location

7249 Mink Hollow Road, Highland, MD 20777

Phone

(301) 854-1538

Open Hours:

Mon-Thurs: 7am - 5pm
Fri-Sun: 7am - 4pm