Water Treatment & Filtration Services

Professional Water Treatment Solutions Across Maryland, D.C. and Virginia

Water Treatment | Plumbing | Well Pumps

Water Treatment​

The National Water Service Way

Understanding What’s in Your Water

Even clear-looking water can contain contaminants that affect taste, safety, and your family’s health. Across Maryland, Washington D.C., and Northern Virginia, homeowners often face a variety of water quality challenges — whether from municipal supplies or private wells.

A glass of tap water—with contaminants often found in well water and city water—labeled around it: arsenic, radioactive contaminants, pesticides, nitrates, hormones, fluorine compounds, calcium, hexavalent chromium, lead, drugs, aluminium, and THMs.

Why Us?​ 45+ Years Experience Clean Safe Water Trusted by Homeowners 5-Star Service

Logo for National Water Service with a large blue N stylized to include a water droplet and circular design, followed by the words ational water service in dark blue text.

At National Water Service, our mission is to give you clean, safe, great-tasting water — backed by over 45 years of trusted experience.

1
Step 1: Professional Water Testing

Step 1: Professional Water Testing

We start with a comprehensive water test. Our specialists analyze your tap or well water to identify exactly what’s in it — from minerals and bacteria to pH imbalance or chemical contamination.

2
Step 2: Clear Results & Expert Guidance

Step 2: Clear Results & Expert Guidance

You’ll receive a detailed water analysis report explaining what was found, how it affects your home and health, and what solutions are best for your specific water problems.

3
Step 3: Custom Treatment — The National Water Service Way

Step 3: Custom Treatment — The National Water Service Way

We design a personalized water treatment plan using non-proprietary, top-of-the-line systems built to last.
That means:

  • No locked-in service contracts

  • No proprietary parts

  • Only transparent, long-term water solutions

All installations are handled by our certified water treatment technicians, who bring decades of hands-on expertise to every job.

4
Step 4: Annual Service & Maintenance

Step 4: Annual Service & Maintenance

Your water system works best with regular care. We offer yearly inspections and maintenance to keep your equipment running efficiently, ensure filters and media are replaced on schedule, and verify that your water quality stays perfect year after year.
Our annual service plans help protect your investment and keep your home’s water clean, safe, and reliable — the National Water Service way.

Water Emergency? No Water?

Common Water Contaminants in Maryland, D.C. & Virginia

Each region in the Mid-Atlantic has unique water chemistry — and even two homes on the same street can have completely different results.

National Water Service has a solution for your water issues. We offer a variety of products tailored to each individual home’s or business’ needs including but not limited to: acid neutralizers, aeration & radon removal systems, birm systems, solution feeders, ozone treatment, sediment filtration, reverse osmosis purification systems, UV disinfection lights,  water softeners, carbon tanks, IBSB systems, KX Pros, multistage systems, and water heaters. For quality service from one of our professionals, please fill out the contact form below. 

A woman standing by a kitchen sink holds a glass of water and pinches her nose, appearing to react to a bad smell or taste—highlighting the need for effective water filtration solutions.

Chlorine & Chloramine

Close-up of a metallic shower fixture with visible water spots, stains, and signs of mineral buildup—highlighting the need for effective water treatment—mounted on a light-colored tiled wall.

Hard Water

A bathtub with stained brownish-orange streaks below the faucet, indicating rust or mineral buildup on the white tub and tiled wall.

Iron & Rust

A clear glass filled with cloudy, dirty water containing visible particles and debris highlights the need for effective water treatment, set against a plain, light-colored background.

Sediment

A bathroom sink with brown, murky water flowing from the faucet, creating dark bubbles in the basin—a clear sign that effective water treatment or a reliable water softener may be needed.

Manganese

A gloved hand holds a petri dish with bacterial colonies under running water from a sink faucet, highlighting a laboratory setting focused on Water Filtration and scientific research.

Bacteria & Coliform

A circular diagram labeled PFAS Sources highlights icons for shampoos, paints, non-stick cookware, and more—emphasizing the importance of water filtration and effective water solutions to help reduce exposure.

PFAS (Forever Chemicals)

A square pink icon displays the chemical symbol Rn for Radon, with the atomic number 86 above and "Radon" below, resembling a periodic table tile—ideal for Maryland Water Treatment or water testing visuals.

Radon In Water

Water Treatment Products & Systems We Offer

From whole-home systems to specialized filters in residential and commercial settings, we offer non-proprietary equipment designed to solve your specific water issues.

A well-lit basement contains large water heaters, two tall water filtration tanks, pipes, valves, and a black storage tank, all set against unfinished walls and an exposed ceiling.
Various plumbing pipes, fittings, and tools, including copper and plastic parts, are arranged on top of house blueprints with a yellow measuring tape in the foreground—ideal for those searching for "plumbing near me.

Trust Our Maryland, DC and Northern Virginia Water Treatment, Well Pump & Plumbing Experts

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.

Water Quality Issues

 

National Water Service offers comprehensive solutions for various water quality issues commonly encountered in many households & small businesses. Our range of products above is designed to address your specific water wants and needs, ensuring clean and safe water for your home or business.

Visit here for more information about Water Quality Issues