UV Water Treatment Systems in Maryland, DC & VA | National Water Service

Eliminate bacteria, viruses, and microorganisms with professional whole-house ultraviolet (UV) water disinfection.

What Is a UV Water Treatment System?

A UV water treatment system uses ultraviolet light to disinfect water by neutralizing harmful microorganisms such as bacteria, viruses, and protozoa — without chemicals.

Unlike filters that remove sediment or softeners that reduce minerals, UV water disinfection targets biological contaminants that can pose serious health risks, especially in well water systems.

At National Water Service, we design and install whole-house UV water treatment systems that protect every tap in your home.

A hand in a blue glove holds a petri dish with greenish colonies of bacteria in water, over a sink with running water in the background.

Who Needs UV Water Disinfection?

UV water treatment is ideal if you:

UV systems are commonly installed after filtration to ensure maximum effectiveness.

Learn more about whole house water filtration here.

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Why Us?​ 47+ Years Experience Clean Safe Water Trusted by Homeowners 5-Star Service

Benefits of UV Water Treatment Systems

UV disinfection water treatment systems offer a highly effective and chemical-free method of purifying water in your entire home. The primary advantage of UV light disinfection water treatment is its ability to neutralize harmful microorganisms, including bacteria, viruses, and protozoa, which can cause waterborne illnesses. 

Without a water test, you be unaware of these bacteria in your water, so a UV water treatment system can be highly efficient and give you peace of mind that your water is safe.

Highly Effective

UV light has been proven to kill up to 99.99% of harmful microorganisms. This level of effectiveness ensures that the water you and your family consume is safe and free from pathogens.

Chemical-Free

Unlike chlorine or other chemical treatments, UV disinfection does not introduce any potentially harmful substances into your water. This makes it a safer and more environmentally friendly option.

Safe for Well & City Water

UV systems do not alter the taste, odor, or color of your water, maintaining its natural quality. This is a significant advantage over chemical treatments, which can sometimes impart an unpleasant taste or smell.

Low Maintenance

Once installed, UV systems require minimal maintenance. The UV lamps need to be replaced annually, and periodic cleaning of the quartz sleeve is recommended to ensure optimal performance.

Eco-Friendly

UV water disinfection systems consume relatively low amounts of energy, making them cost-effective to operate. They use about the same amount of energy as a 60-watt light bulb.

Our Proven UV Installation Process

At National Water Service, our mission is to give you clean, safe, great-tasting water — backed by over 47 years of trusted experience.

1

Step 1: Professional Water Testing

We test your water to identify bacteria, sediment, iron, hardness, and other factors.

2

Step 2: System Design

We size and configure the UV system based on flow rate, water quality, and household demand.

3

Step 3: Expert Installation

Our licensed technicians install the UV system seamlessly into your existing plumbing.

4

Step 4: Ongoing Support

We provide maintenance, bulb replacement, and system inspections.

Is UV Water Treatment Good for Well Water?

Yes — UV water treatment is one of the most effective solutions for disinfecting well water.

Well water is not treated by municipalities, making it more susceptible to bacterial contamination. A properly installed UV system provides continuous protection without altering water chemistry.

Many homeowners pair UV disinfection with other well water filtration systems like:

Learn More about the best whole house water filtration system.

Signs You May Need UV Water Disinfection Immediately

  • Failed bacterial water test

  • Cloudy or foul-smelling water

  • Recent flooding near your well

  • Gastrointestinal illness with unknown cause

  • Aging well or plumbing system

⚠ If bacteria is present, do not delay treatment. We take all the necessary steps in checking water quality issues and dealing with them.

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Cost Benefits of Using UV Water Treatment vs Other Water Filter Systems

UV water treatment systems offer long-term value compared to chemical or media-based filtration systems.

Compared to chemical disinfection

  • No recurring chemical costs
  • No taste or odor issues
  • No harmful byproducts

Compared to media filtration

  • Lower ongoing maintenance
  • No backwashing or regeneration
  • Longer system lifespan

Best use case

UV systems are ideal when paired with:

  • Sediment filtration
  • Carbon filtration
  • Whole-house water treatment

UV Water Disinfection System FAQ

Is UV water treatment worth it?

Yes, because UV water treatment can kill up to 99.99% of bacteria, it is one of the most effective water treatments you can install for your home.

Yes, the “C” band in the light is what is most effective and helps treat water for homes and businesses through UV water filters.

UV disinfection for water treatment uses UV light to cleanse and clean water. The “C” band in the light is what kills up to 99.99% of bacteria that can be harmful when detected in water.

Yes, these are proven to be 99.99% effective at killing bacteria and similar contaminants detected in water supplies.

A UV disinfection water system uses ultraviolet light to penetrate the cell walls of microorganisms, disrupting their DNA and rendering them unable to reproduce. This process effectively neutralizes harmful bacteria, viruses, and protozoa, making the water safe to drink.

UV disinfection is highly effective against most common waterborne pathogens, including bacteria, viruses, and protozoa. However, it does not remove chemical contaminants, heavy metals, or sediments, so it is often used in conjunction with other filtration methods.

The UV lamp in a disinfection system typically needs to be replaced once a year to ensure optimal performance. Some systems have indicators to alert you when it’s time for a replacement.

Yes, UV systems are designed to handle various flow rates. It’s essential to choose a system that matches your household’s water usage to ensure effective disinfection. We can consult with you on the best system for your household needs.

Yes, UV water treatment is environmentally friendly as it does not use chemicals or produce harmful byproducts. It’s a green solution for water purification and consumes low energy.

No, UV disinfection does not alter the taste, odor, or color of water. It only targets and neutralizes harmful microorganisms, preserving the natural qualities of your water.

While some UV systems are marketed as DIY-friendly, professional installation is recommended to ensure proper setup and optimal performance. A professional from our team can also provide essential maintenance and support services.

Depending on the quality of your water, you might need additional treatments like sediment filters, activated carbon filters, or water softeners to address other contaminants such as chemicals, heavy metals, and sediments.

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