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National Water Service

David Rycke

7249 Mink Hollow Road
Highland, Maryland 20777

P: (301) 854-1333


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About Us

For 40 years, National Water Service has been installing and servicing complex water systems in Homes, Restaurants, Hotels, Hospitals, Shopping Centers & more all over the the DC, Baltimore & Frederick Metro areas.

We work with Architects, Builders & Construction Firms to create custom applications for residential & commercial water treatment, purification, as well as a complete line of well pumps, boosters, etc.

Whether on City Water or a Well System, water quality can vary quite a bit from street to street and we are happy to do a basic analysis of your water and/or existing water treatment at no charge.

Our installers are all professionally trained in Water Treatment, Purification, Filtration and are certified well water specialists!

Service Areas


  • Howard, MD
  • Anne Arundel, MD
  • Baltimore City, MD
  • Baltimore, MD
  • Carroll, MD
  • Frederick, MD
  • Prince Georges, MD
  • Montgomery, MD
  • Washington, D.C., DC
  • Fairfax, VA
  • Fauquier, VA
  • Loudoun, VA

Our Work

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