#1 Rated plumbing services
Searching for Licensed Local Plumbers in Maryland, DC and NoVA?
Serving Montgomery, Howard, Frederick, Baltimore, Carroll, Prince George’s Counties in Maryland, District of Columbia & Northern Virginia
- 45+ Years of Experience
- Precision Workmanship
- Emergency Plumber
- Innovative Solutions
- Family Atmosphere
- Upfront & Competitive Pricing
- Trusted Customer Service
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Maryland, DC & Northern VA
Plumbing & Mechanical
Tankless Water Heater
Hybrid Water Heater
Gas Water Heater
Electric Water Heater
Faucet Installation & Repair
Gas Fitting
Camera Inspection
Drain Cleaning & Fixtures
Sump Pumps
Leak Detection
Garbage Disposal
Outdoor Kitchen
Residential Plumbing
Emeregency Plumbing
Commercial Plumbing
And More!
Plumbing Repair
Plumbing Install
Emergency Plumbing Services
What plumbing services do you provide in Maryland, DC & NoVA?
We handle a full range of plumbing and mechanical services, including tankless, hybrid, and gas water heaters, faucet installation, gas fitting, drain cleaning and repairs, sump pumps, leak detection, garbage disposals, outdoor kitchens, residential plumbing, commercial plumbing, emergency plumbing, and more.
Which areas do you serve?
We provide plumbing services throughout Maryland, Washington, DC, and Northern Virginia, with a strong focus on counties like Montgomery, Howard, Frederick, Baltimore, and Carroll and many surrounding cities and communities.
Do you offer emergency plumbing services?
Yes. If you have no water, a major leak, sewage backup, or any urgent plumbing issue, you can contact us for emergency plumbing service. A licensed plumber will be dispatched as quickly as possible to help protect your home or business from further damage.
Are your plumbers licensed and insured?
Yes. Our plumbers are fully licensed and insured and follow all local codes and regulations. Our company holds plumbing and contractor licenses in Maryland and Virginia, and we stay up to date on best practices and safety standards.
How much experience do you have?
National Water Service has been serving homeowners and businesses for over 45 years, providing expert plumbing, water treatment, and mechanical services backed by precision workmanship and trusted customer service.
Do you work on both residential and commercial plumbing?
Absolutely. We service single-family homes, townhomes, condos, apartments, offices, retail spaces, and other commercial properties. Whether you need routine maintenance at home or a large installation at a commercial site, we can help.
Can you replace or install water heaters?
Yes. We install, repair, and replace tankless water heaters, hybrid water heaters, and traditional gas water heaters. Our team can help you choose the right size and type of system based on your home or business, hot water usage, and energy-efficiency goals.
Do you offer drain cleaning services?
Yes. We provide drain cleaning and repair for slow drains, recurring clogs, gurgling drains, and backups in sinks, tubs, showers, and toilets. We’ll diagnose the cause of the problem and recommend the best long-term fix, not just a quick temporary solution.
Can you help if I suspect a hidden leak?
Yes. We offer professional leak detection services. If you see unexplained water spots, higher water bills, damp areas, or hear water running when fixtures are off, we can locate and repair hidden leaks in pipes, walls, floors, or underground lines.
Do you provide special offers or coupons for plumbing services?
Yes. We offer professional leak detection services. If you see unexplained water spots, higher water bills, damp areas, or hear water running when fixtures are off, we can locate and repair hidden leaks in pipes, walls, floors, or underground lines.
How do I schedule a plumbing service?
You can schedule a service by using the “Schedule a Service” button on our website or by calling our office during business hours. Just share your contact information, address, and the nature of your plumbing issue, and our team will confirm an appointment time with you.
What are your business hours?
Our standard office and service hours are Monday–Thursday, 7:00am–5:00pm, and Friday, 7:00am–4:00pm. Emergency plumbing service is available on weekends as needed.
Do you also handle water treatment and well systems?
Yes. In addition to plumbing and mechanical work, National Water Service specializes in water treatment systems and well pump services. If your property uses a well or you’re concerned about water quality, we can design, install, and maintain a complete solution for clean, reliable water.
How is pricing handled for plumbing work?
We provide upfront, competitive pricing before work begins. After inspecting the issue, our technician will explain your options and associated costs so you can make an informed decision—no surprise charges or hidden fees.
What should I do in a plumbing emergency before you arrive?
If safe to do so, turn off the water supply to the affected fixture or your main water shutoff valve, avoid using electrical outlets near standing water, and move valuables away from the leak area. Then contact us immediately so we can dispatch an emergency plumber.
Coupons
$ 25 OFF
Installation and Service
For Active Duty Military, Veterans Or First Responders
$ 75 OFF
New Water Treatment
For New Customers Getting New Water Treatment Installs Only
$ 100 OFF
New Well Pumps Installation
For New Customers Getting New Well Pump Installs Only
$ 25 OFF
Customer First Service Call
For New Customers Getting First Service Call
$ 40 off
Any Plumbers Service Call
For use only one time per customer
National Water Service
2878 Daisy Road, Woodbine, Maryland, 21798
301-854-1333
Service Area
Counties:
Montgomery County, Howard County, Frederick County, Baltimore county and Carroll County in Maryland.
Fairfax County, Alexandria County, Manassas County, Falls Church County, Arlington County, Loudoun County in Virginia
Areas and cities:
Rockville, Bethesda, Potomac, Silver Spring, Columbia, Ellicott City, Clarksville, Woodbine, Savage, North Laurel, Dayton, Glenwood, Cooksville, Ilchester, West Friendship, Jessup, Lisbon, Highland, Woodstock, Elkridge, Sykesville, Marriottsville, Glenelg, Frederick, Urbana, and Middletown, Westminster, Sykesville, Eldersburg, New Windsor, Union Bridge, Hampstead, Manchester, Taneytown, Towson, Kingsville, White Marsh, Lochearn, Reisterstown, Dundalk, Accokeek, Adelphi, Andrews AFB, Aquasco, Baden, Beltsville, Bladensburg, Bowie, Brandywine, Brock Hall, Camp Springs, Capitol Heights, Cedar Heights, Cheltenham, Chillum, Clinton, Coral Hills, Croom, District Heights, East Riverdale, Fairmount Heights, Fairwood, Forestville, Fort Washington, Friendly, Glassmanor, Glenarden, Glenn Dale, Greenbelt, Hyattsville, Kettering, Konterra, Lake Arbor, Landover, Landover Hills, Langley Park, Lanham, Largo, Marlboro Meadows, Marlboro Village, Marlton, Mitchellville, National Harbor, Oxon Hill, Palmer Park, Peppermill Village, Queen Anne, Queens Chapel, Queensdale, Queensland, Riverdale, Riverdale Park, Rosaryville, Seat Pleasant, Seabrook, Silver Hill, Springdale, Suitland, Summerfield, Temple Hills, Upper Marlboro, Walker Mill, Westphalia, West Laurel and Woodmore.
Fairfax, Reston, Herndon, McLean, Vienna, Great Falls, Annandale, Springfield, Burke, Lorton, Chantilly, Centreville, Clifton, Oakton, Falls Church, Arlington, Alexandria, Ashburn, Sterling, Leesburg, Purcellville, Middleburg, South Riding, Aldie, Brambleton, Cascades, Broadlands, Lovettsville, Round Hill, Manassas, Manassas Park, Haymarket, Gainesville, and Falls Church City.
District of Columbia
