Water… It’s What We Do!
National Water Service is based in Maryland and proudly serves residential and commercial customers across the Mid-Atlantic region. From city neighborhoods to rural communities, our expert technicians are on the road daily to ensure clean, safe, and reliable water systems for homes and businesses.
We regularly service areas throughout:
Montgomery County, MD – including Rockville, Bethesda, Potomac, and Silver Spring
Howard County, MD – including Columbia, Ellicott City, and Clarksville
Frederick County, MD – including Frederick, Urbana, and Middletown
Carroll County, MD – including Westminster and Sykesville
Northern Virginia – including Fairfax, Great Falls, and Loudoun County
Washington, DC Metro Area
Surrounding rural communities and well water regions
Whether you need emergency well pump service, water filtration system installation, or routine maintenance, we’re your trusted local water experts—just a call away.
Not sure if you’re in our service area?
Contact us and we’ll let you know right away.
Monday – Thursday: 7am – 5pm
Friday: 7am – 4pm
Saturday and Sunday: 6am – 6pm
Not all water is created equal. Even treated municipal water can contain man-made chemicals like PFAS, chloroform, and nitrates. Well water often has high levels of naturally occurring substances like calcium, iron, or lead. Left untreated, these contaminants can affect your health, your appliances, and the taste of your water.
That’s why we offer expert water analysis and tailored treatment solutions—so you can drink and use your water with confidence.
Plumbing issues are more than just an inconvenience—they can disrupt your entire day. Leaky pipes, low water pressure, or unexpected breakdowns not only cost time and money but can lead to serious damage if left unchecked. Whether it’s routine repairs or emergency fixes, our licensed plumbing team has you covered.
Your well is your lifeline—especially if you’re off the grid. But over time, well pumps can wear out, water pressure can drop, and systems can fail. When that happens, we’re ready to step in. From pump repair to complete replacements, we make sure your well runs smoothly, rain or shine.
Water is not always safe to consume or use. It is often polluted or has high levels of naturally occurring substances. For instance, many water deposits contain manmade contaminants. These pollutants may include chemicals such as bromodichloromethane, choroform, halocetic acids, nitrates and more. In addition, they may also contain Per- and Polyfluoroalkyl substances. Pollution from these chemicals are known to cause liver damage, decreased fertility, high cholesterol cancer, and other diseases of the like. Therefore, water containing these substances is not safe for consumption.
Water deposits may have high levels naturally occurring contaminants. These substances are not safe for human consumption in high quantity. For example, some areas may have large deposits of calcium, iron, or lead. These substances are also known to cause health problems in individuals when consumed in high quantities. The chemicals in city water and high quantities natural substances in well reserves are equally dangerous. Therefore, water treatment is a necessity for most people because access to clean water is crucial for human survival.
We’re more than a water treatment company—we’re your one-stop solution for clean water, strong plumbing, and dependable well systems. Our team combines decades of experience with a commitment to quality and service.
If you’re dealing with water problems—or just want to avoid them—reach out today.
Fill out our contact form and one of our experts will follow up with you soon.
National Water Service has been providing residential & small commercial water treatment, plumbing & well pump services for over 45 years. We specialize in water treatment, filtration & purification solutions as well as general plumbing to ensure clean, safe water for our customers in Maryland, DC & Northern Virginia.
Mon - Thurs
7:00am - 5:00pm
Friday
7:00am - 4:00pm
Sat - Sun
Emergency Service Available
National Water Servicing Corporation — 2025 All Right Reserved ™
