#1 Rated
Water Treatment & Filtration Services in Maryland, DC & NoVA
Clean, safe water for your family. Serving Montgomery, Howard, Frederick, Baltimore, Carroll, Prince George’s Counties in Maryland, District of Columbia & Northern Virginia
- 45+ Years of Experience
- Precision Workmanship
- Emergency Services
- Innovative Solutions
- Family Atmosphere
- Upfront & Competitive Pricing
- Trusted Customer Service
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Maryland, DC & Northern VA
Water treatment
Home Water Filtration
Reverse Osmosis Water Treatment
Water Testing
Water Softener
Acid Neutralizer
Storage Tanks
Iron Breaker Sulphur Breaker - IBSB
Radon Removal
KX Pro's
Chemical Feeder
Sediment Filtration
Booster Pumps
UV Disinfection
Carbon Tanks
Multi Media Systems
Multi Media Systems
And More!
Water Treatment Repair
Water Treatment Install
Water Treatment Leak Fix
Emergency Water Services
How do I know which water treatment system is right for my home?
Every home’s water is different. We start by performing a free water test to identify specific contaminants (like iron, sulfur, sediment or chlorine). Based on the results, we recommend a customized solution—whether it’s a whole‑house filtration system, a reverse osmosis unit, a UV disinfection lamp or a combinationEvery home’s water is different. We start by performing a free water test to identify specific contaminants (like iron, sulfur, sediment or chlorine). Based on the results, we recommend a customized solution—whether it’s a whole‑house filtration system, a reverse osmosis unit, a UV disinfection lamp or a combination
Do you service both well water and municipal water?
Yes. We install and service systems for private wells and for city‑supplied water. For well water we often use sediment filters, neutralizers and softeners to address hardness, iron and odor issues. For municipal water we focus on removing chlorine, improving taste and protecting plumbing with carbon tanks and whole‑house filters.
What does a whole‑house filtration system do?
A whole‑house (point‑of‑entry) system treats all the water coming into your home. It can remove sediments, chlorine, heavy metals and other contaminants, so every tap—from kitchen sink to shower—delivers clean, filtered water. It also helps extend the life of appliances and plumbing by reducing scale and corrosion
How long does installation take and will I be without water?
Most residential water‑treatment installations take 2–4 hours. We’ll schedule a convenient appointment, arrive on time and complete the work efficiently. You may experience a brief water shut‑off during installation, but we’ll keep interruptions to a minimum and test the system before we leave.
How often do I need maintenance or filter changes?
Maintenance frequency depends on the type of system and your water quality. Sediment and carbon filters typically need replacement every 6–12 months; UV lamps are usually changed annually; and reverse osmosis membranes last 2–3 years. We offer maintenance plans to ensure your system runs efficiently and to remind you when it’s time to service or replace filters.
Which areas in Maryland do you serve?
We proudly serve homeowners across Montgomery, Howard, Frederick, Baltimore and Carroll counties, including cities like Rockville, Bethesda, Columbia, Ellicott City, Frederick, Westminster, Towson and surrounding communities. If you’re unsure whether we cover your area, just give us a call!
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
