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    • Our Locations
      • Darnestown MD
      • Highland MD
  • Home
  • Services

    • Lifetime Warranty Well Pumps
    • Water Treatments
      • Acid Neutralizer
      • Aeration / Radon Removal
      • Birm
      • Chemical/Solution Feeders
      • Ozone Treatment
      • Sediment Filtration
      • Reverse Osmosis
      • UV Disinfection
      • Water Softener
    • Water Treatment Products
      • Carbon Tank
      • IBSB
      • KX Pro
      • Multistage Whole House System
    • Commercial Water Treatments
      • Food Service
      • Office
    • Well System Products
      • Lifetime Warranty Well Pumps
      • Pressure Tanks
    • Water Testing
    • Plumbing Services
    • Water Heaters
      • Water Heater Info
      • Water Heaters for Sale
    • Water Storage
    • Well Enclosure
  • Common Water Issues
    • Acidic Water
    • Arsenic
    • Bacteria
    • Bad Taste and Odor
    • Chloride
    • City Water Contaminants
    • Man Made Contaminants
    • Cloudy Water
    • Hard Water
    • Leaks
    • Low Pressure
    • Radon
    • Sediments
    • Stains
  • About NWS
    • About Us
    • Blog
    • Gallery
    • Testimonials
  • Resources
    • What’s your water issue
    • Manuals & Brochures
    • How To
    • Water News
  • Contact Us
    • Our Locations

      • Darnestown MD
      • Highland MD

Water Treatment

What is your issue?

Need Commercial Services?

Stains, Smell, & Taste

Stains, Smell, & Taste.

Corrosion, Leaks, & Appliances

Corrosion, Leaks, & Appliances.

Bacteria & Contaminants

Water quality solutions.

Hard Water

Water Softener

Radon

Aeration & Carbon

Lead

KX Pro, Acid Neutralizer & Reverse Osmosis

Reverse Osmosis

Cleaner Drinking Water

For over 40 years, National Water Service has been a Leader throughout the Mid-Atlantic Region for all things Water Treatment, Water Testing, and Well Pump related.
Contact Us
Contact Information
7 Day a Week Emergency Service

Main Office

7249 Mink Hollow Road
Highland, MD 20777
(301) 854-1333
View Location

Our Store

14111 Seneca Road
Darnestown, MD 20874
(410) 379-1993
View Location

Call Us

Maryland: (301) 854-1333
Washington DC: (301) 854-1333
Baltimore: (410) 379-1993
Virginia: (540) 882-4006
Fax: (301) 854-1538
Email:  info@nationalwaterservice.com 
SOME OF OUR SERVICE AREAS

Featured Counties

- Frederick County, Maryland

- Howard County, Maryland

- Montgomery County, Maryland

- Loudoun County, Virginia

- Anne Arundel County, Maryland

- Baltimore County, Maryland

- Carroll County, Maryland

- Prince George's County, Maryland

- Fairfax County, Virginia

- Prince William County, Virginia

- Washington, D.C.


Featured Cities

- Clarksville, Maryland

- Gaithersburg, Maryland

- Germantown, Maryland

- Rockville, Maryland

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