Delivering clean, safe, and reliable water solutions for homes and businesses throughout Fairfax County for over 47+ years.
National Water Service provides professional water treatment services in Fairfax County, VA. Whether your home is connected to a public water system or relies on a private well, we identify water quality concerns, improve taste and safety, and protect your plumbing with customized treatment solutions designed for local conditions.
Fairfax County homeowners and businesses rely on a mix of public water systems and private wells, each with unique water quality challenges. While municipal water is treated to meet safety standards, water issues often originate inside the home due to plumbing materials, aging infrastructure, mineral content, or environmental factors.
National Water Service provides custom water treatment solutions across Fairfax County, helping residents improve water quality, protect plumbing systems, and ensure long-term water safety for both residential and commercial properties.
Water quality in Fairfax County varies depending on whether your property is supplied by a municipal water provider or a private well system.
Public water is professionally treated and monitored, but homeowners may still experience issues related to hardness, disinfectant taste, aging pipes, or mineral buildup once water enters the home. Properties on private wells face additional variables, including groundwater conditions, mineral content, and bacterial risks.
Because water quality can differ between neighborhoods—and even between neighboring homes—professional testing is essential to determine the most effective treatment solution for your specific water supply.
Fairfax County includes a mix of urban, suburban, and semi-rural areas, which means water quality conditions are not one-size-fits-all.
Common water quality factors affecting Fairfax County homes include:
Hard water and mineral buildup, reducing appliance efficiency and causing scale
Disinfectant taste or odor in municipal water supplies
Iron and manganese staining, especially in well-served areas
Low pH or corrosive water, which can damage plumbing and leach metals
Bacterial or microbial risks in private well systems
Environmental runoff, which can impact groundwater quality over time
Even when water meets regulatory standards, these conditions can affect taste, plumbing lifespan, and overall water usability inside the home.
Private wells and aging plumbing systems can introduce bacteria or microorganisms that require testing and treatment.
Calcium and magnesium minerals can cause scale buildup, cloudy water, and reduced soap effectiveness.
These minerals can cause staining, metallic taste, and clogged fixtures.
Acidic water may corrode pipes and contribute to metal leaching.
Urban development and stormwater runoff can affect source water quality over time.
We test for bacteria, hardness, pH, minerals, sediment, and other locally relevant contaminants.
You receive clear explanations and honest recommendations—no pressure, no guesswork.
You receive clear explanations and honest recommendations—no pressure, no guesswork.
Installed by licensed professionals with optional service and maintenance plans available.
National Water Service provides a full range of water treatment solutions for Fairfax County homes and businesses, including:
Every system is custom-built based on test results, not assumptions.
Fairfax
Vienna
McLean
Reston
Herndon
Chantilly
Burke
Springfield
Centreville
Annandale
And surrounding communities
Yes. Many water quality issues originate from plumbing, fixtures, or mineral content—not the public supply itself.
Yes. Private wells require targeted testing and treatment based on groundwater conditions.
At least once per year, or anytime you notice changes in taste, odor, color, or pressure.
Yes. We provide free professional water testing for Fairfax County homeowners.
Schedule your free water test today or call 301-781-5866 to speak with a water treatment specialist.
