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Dundalk Water Company for Homes & Businesses

Total Water Quality Solutions and Complete Water Treatment in Dundalk

A person in a blue shirt and brown boots stands on grass near a building, working with pipes and cables attached to a metal post. Sunlight shines diagonally, and equipment is visible on the ground nearby.

Are you looking for a top-notch water treatment company in Dundalk you can trust? National Water Service is your solution.

We have been the trusted partner to Dundalk homes and businesses for over 40 years, offering everything from water testing and treatment to plumbing services and well pumps. Our five-star service guarantees you and your family get the best water possible.

We’ve expanded our company to include leak detection directly to your smart phone, water heater installations, total home filtration, commercial companies water treatment, and more. Let’s make your home’s water the best it can be!

Proudly serving Dundalk and surrounding areas in the DMV. Get a personal quote by emailing us today.

Better Water is One Message Away

Dudalk, MD Water Quality Solutions | Exceeding Expectations

A water test kit for water testing is spread out on a paper towel atop a kitchen counter. Items include a blue box, test strips, liquid bottles, a dropper, a color chart, scissors, and a packet.

Water Testing in Dundalk, MD

For families and parents, your top priority is your children's health. National Water Service is here to help with professional water testing in Dundalk, Maryland. We offer affordable solutions based on your results to ensure your home's water is free from harmful contaminants. We provide detailed analysis and effective treatments, guaranteeing your family’s water is safe and clean. Let us help you protect what matters most.

A person in a pink shirt is filling a glass with water from a modern kitchen faucet over a sink, appreciating water quality as natural light comes through the window in the background.

RO Filters in Dundalk, MD

Do you want cleaner, better-tasting water straight from every tap in your home? Our whole home water filtration systems are just what you need. As part of our water quality solutions in Dundalk, we offer reverse osmosis filtration. We’ll take care of everything, so you can enjoy fresh, contaminant-free water for drinking, cooking, and bathing. It's an easy way to make sure your family gets the best water possible.

Three clear glasses filled with water are arranged in a row, each containing different levels of brown sediment, illustrating how a water filter can help reduce murkiness and improve clarity from left to right.

Say Goodbye to Dark Water in Dundalk, MD

Transform your home's water with our affordable water treatment services in Dundalk, MD. Say goodbye to dirty, cloudy, and odorous water, and hello to clean, pure water that’s better for you and the planet. Our systems address hard and acidic water issues, ensuring you get cleaner water that improves everything from your skin to your coffee. We make it easy with water softeners, UV disinfection, multimedia, and more.

Four cylindrical water filters are shown: two old, dirty filters above two clean, new filters. The text asks, You Think City Water is Clean?? Whats in YOUR Water?? and promotes a free evaluation.

Sediment Filter Solutions in Dundalk, MD

Sediment in well water can lead to serious issues like clogged pipes and faster appliance wear and tear. Our advanced sediment filtration systems offer a technical solution to these problems, safeguarding your plumbing and enhancing appliance longevity. Trust our expertise to deliver clean, sediment-free water and protect your home’s infrastructure. Get a quote on sediment filters for your home.

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Commercial Water Treatment in Dundalk, MD

Does your business need top-notch water services to keep things running smoothly? National Water Service has got you covered. We offer everything from water testing and treatment to plumbing repairs, ensuring your business always has clean and safe water. Our reliable service helps you focus on what you do best—serving your customers.

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Well Pump Replacement in Dundalk, MD

Keep your family’s water supply safe and dependable with our well pump replacements. At National Water Service, we understand the importance of a functioning well pump for your home. This is why we offer lifetime warranty well pumps to qualifying homeowners. Call today for a quote and learn if our well pumps are the right choice for you.

A close-up of a bathtub filling with water, showing a chrome faucet and handheld showerhead. The foamy, bubbly water suggests a relaxing bath scene—perfect after a new water heater installation for endless comfort.

Home & Business Plumbing in Dundalk, MD

Facing a plumbing emergency? Don’t worry, National Water Service is here to help! Our emergency plumbing services are available 24/7 to tackle any issue, big or small. From burst pipes to severe leaks, our skilled plumbers will resolve your problem quickly and efficiently, getting your home back to normal in no time. Call us for general plumbing repairs and installation quotes.

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Leak Detection for Your Home in Dundalk, MD

Unexpected pipe bursts can cause significant damage to your home. With National Water Service's leak detection services, you’ll receive immediate alerts at the first sign of trouble. The rapid response system sends alerts directly to your phone, so you act quickly to minimize damage and keep your home safe from water-related disasters.

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Name Brand Water Heaters in Dundalk, MD

Keep your home spotless and your chores hassle-free with our water heater installation services. National Water Service guarantees a steady supply of hot water for all your cleaning needs, from washing dishes to doing laundry. Let us help you maintain a clean and comfortable home with our reliable water heater solutions. We do repairs, installs, and estimates. Contact us today to learn more about our complete water treatment services in Dundalk, MD.

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Well Water Pressure Tanks & More in Dundalk, MD

Are you struggling with inconsistent water pressure? National Water Service has the solution with our well water services in Dundalk, MD. We’ll help you achieve the perfect water pressure for your home by addressing any issues with your well system. We handle well pump repairs, replacements, water pressure maintenance, and more. Enjoy a steady and reliable flow of water for all your daily needs. Contact us today for well water services near you.

Dundalk's Go-To Water Company

Custom Recommendations

There is no "one size fits all" solution -- we base our recommendations on your needs, budget, and water analysis for personal care

Timely
Responses

Don't wait around, hoping the water will fix its self -- we provide fast, easy scheduling you can count on when you need it the most

Proven Customer Service

We stand behind our products, services, and team -- that means a 5-star experience every time no matter the job

No Job Too Big or Small

Our Dundalk water treatment services are for homes, businesses, repairs, installs, small replacements and big overhauls

One Company does it all

Don't stress about a plumber, water testing, ordering your new water heater -- our one company handles all water quality solutions in Dundalk

Cost
Savings

With a company you can trust, regular maintenance helps you stay ahead of costly repairs and reduce your use of bottled water

Contact Us Today to Get Started

Save More as a New Customer

A smiling man and child take a selfie together. Text offers $25 off any plumbing service call for new customers with coupon conditions listed below.
A family sits together smiling outdoors, with promotional text offering $75 off new water treatment or plumbing services for new customers. Coupon must be printed and presented at installation; cannot be combined with other offers.
A man sits on the floor smiling and holding a child. Overlaid text offers $100 off new well pumps for new customers, courtesy of National Water Service, with coupon details and terms.
A group of people in military uniforms, with a visible American flag patch, next to text offering $25 off any Plumbing installation call for active duty military and veterans using a printed coupon.