Water… It’s What We Do!
At National Water Service, we’re proud to offer expert water treatment, well system repair, and hot water solutions to homes and businesses across Maryland, Washington D.C., and Northern Virginia. Below are answers to the most common questions about our services, systems, and how we help keep your water clean, safe, and flowing efficiently.
We offer a comprehensive range of services, including:
Water treatment solutions (filtration, purification, softening)
Signs include hard water buildup, metallic tastes, sulfur smells, staining on faucets, or cloudy water. We offer free water testing and custom recommendations for softeners, filters, or reverse osmosis systems.
Our service area includes:
Maryland
Washington, D.C.
Northern Virginia
We are committed to providing top-notch water services to clients throughout these regions.
This may be a well pump or pressure tank issue. If your faucets sputter, you hear clicking sounds, or your system completely shuts off, call us for emergency service. We offer fast diagnostics and repairs for all well systems.
RO systems purify water by removing contaminants like lead, chlorine, and nitrates. Filters typically need replacing every 6–12 months, and membranes every 2–3 years. We offer maintenance plans to keep yours running smoothly.
Yes — we install and service both. We’ll help you choose between tankless systems for on-demand heating or storage tank heaters for larger capacity needs. Energy efficiency and reliability are always top of mind.
UV systems kill bacteria, viruses, and other pathogens in your water without chemicals. They’re highly recommended for homes with well water, especially if water tests show microbiological contamination.
Yes. We offer tailored solutions for both types. On city water, we often install chlorine filters, carbon tanks, or reverse osmosis. For well water, we provide full treatment, pump repair, and filtration systems to ensure safe use.
Absolutely. We install sump pumps, booster pumps, flood sensors, and emergency shutoff valves to protect your home from water damage. These are especially useful in basements and low-lying areas.
We’ve been a trusted name in water systems since 1979. Our commitment to quality, customer education, and long-term service makes us the go-to provider for complete water system solutions in the DMV area.
With over 45+ years of experience in water repair and management, we are proud to offer dedicated Water Techs & Master Plumbers to homes and businesses. Get affordable pricing, competitive quotes, and quality materials that last.
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 ™
