About The Company

 Water Treatment, Purification & Well Pump Specialists


At National Water Service is a water company, we set the standard for home water treatment, purification, as well as a complete line of well pumps, boosters, etc. If you need it, we have it! In addition to offering outstanding service and workmanship, our staff is friendly and eager to answer any of your questions.

In dealing with Residential areas, one of the important things a homeowner needs to consider is water quality. Before any decision should be made, a well informed homeowner should have their water evaluated. It is important to note that whether on City Water or a Well System, water quality can vary quite a bit from neighborhood to neighborhood. National Water Service is happy to do a basic analysis at no charge. In addition, if extensive testing is deemed necessary, we have testing services available for virtually any contaminant at a reasonable rate.

A 5 Star Rated Company Time and Time Again!

Serving all of Maryland, Virginia & DC’s well water, well pump, water treatment, water purification and water filtration needs!

National Water Service Truck

For over 40 years, National Water Service has been installing and servicing complex water systems. Restaurants, Hotels, Hospitals, Shopping Centers, and various other Government and Non-Governmental sites all over the State of Maryland, Washington DC, and Virginia. We work with area Architects, Builders, and other Construction Firms to create custom applications for Water Treatment and Purification.

Our installers are all professionally trained in both Water Treatment, Purification, as well as all aspects of well pump service. For over 40 years we have dominated the industry in our area and we still hold an unblemished record. Our prices are competitive and yet we still find the time to continually invest our time in classrooms, on the job training, and on the proper equipment to get the job done.

In addition, every installation is followed up on by an inspection to ensure that the water quality is as promised and that the installation is plumbed to international plumbing codes as well as our strict guidelines!