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Columbia Water Treatment for Homes & Businesses

40+ Years in business as a 5-star rated water company

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National Water Service, going above and beyond for whatever you need. 

Welcome to National Water Service, your trusted local water company for complete water treatment in Columbia, MD.

We specialize in water treatment, water filtration, plumbing, leak detection, and water testing for both homes and businesses. Our team of experts is dedicated to ensuring you receive the highest quality water and reliable service.

With our state-of-the-art technology and commitment to customer satisfaction, National Water Service is your go-to partner for all your water needs. Trust us to keep your water clean, safe, and efficient.

Contact Us Today to Get Started

Complete Water Treatment in Columbia, MD from One Trusted Company

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 Columbia, MD

Our water quality solutions in Columbia, MD include professional water testing to ensure your water in your home or business is safe and clean. We analyze your water for contaminants, pH levels, hardness, and other key indicators to provide you with a detailed report and recommendations for improving your water quality.

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.

Whole Home RO in Columbia, MD

Experience the purest water throughout your entire home with our whole home reverse osmosis systems. This advanced filtration process removes impurities, chemicals, and contaminants, delivering fresh, clean water from every tap. Get reverse osmosis home water treatment in Columbia, MD for a price that works for you.

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Water Filtration in Columbia, MD

Our water filtration solutions are designed to remove harmful contaminants and improve the taste and quality of your water. From basic carbon filters to advanced multi-stage systems, we have the right filtration option for your needs. Available for commercial properties like grocery stores, restaurants, schools, care facilities, offices, 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 in Water in Columbia, MD

Sediment in your water can cause a range of issues, from clogged pipes to damaged appliances. Our sediment filtration systems effectively remove particles and debris, ensuring clean, clear water throughout your property for every member of your family. Discover more about the cost savings of sediment filtration and how it adds value to your home by getting a quote on water quality solutions in Columbia, MD.

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Dirty or Smelly Water Solutions in Columbia, MD

If your water looks dirty or has an unpleasant odor, our water treatment services can help. We use state-of-the-art technologies to eliminate contaminants and impurities, leaving you with fresh, clean water that’s safe for drinking and everyday use. Water should not be cloudy, leave stains, or have any odors.

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Well Pump Replacements in Columbia, MD

We offer well pump replacements as part of our well water treatments in Columbia, MD. Choose a lifetime warranty well pump when you work with National Water Service. Our high-quality well pumps are built to last and ensure consistent water pressure and flow. National Water Service’s submersible well pump products are designed using high quality stainless steel and premium polymers. These two materials work efficiently to give you years of trouble-free performance.

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Plumbing Services in Columbia, MD

Our expert plumbing services cover everything from repairs and installations to maintenance and inspections. Whether you need a simple fix or a complex installation, our skilled plumbers are here to help. Call us for gas lines, outdoor kitchens, clogged pipes, new faucets, emergency leaks, and more.

A black and silver device labeled DROP, with the letter O stylized as a blue water droplet, shown against a white background.

Leak Detection for Your Home in Columbia, MD

Undetected leaks can cause significant damage to your home. The DROP water system monitors your home’s water, water temperatures, water flow, and more so you can get live alerts on the status of your water anywhere, any time. Get peace of mind while you’re away at work, on vacation, or even if the pipes begin to freeze overnight -- straight from your smartphone.

A woman relaxes in a bubble-filled bathtub near a window, resting her head back with eyes closed and arms draped on the tub’s edge, enjoying a peaceful moment thanks to her reliable water heater.

Water Heaters in Columbia, MD

Ensure a consistent supply of hot water with our professional water heater installation and repair services. Whether you need a new water heater installed or an existing one repaired, our skilled technicians provide reliable and efficient solutions. We work with name brands for optimal performance and longevity.

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Well Water in Columbia, MD

Keep your well water system in peak condition with our well water treatment in Columbia, MD. We offer well pump installations and replacements, pressure system maintenance, and thorough water testing to ensure your well water is safe and reliable. Never again worry about water pressure, filtration, or access.

Benefits of Working with a Professional Water Company in Columbia, MD

Experience

40+ years of hands-on experience combined with decades of expertise and the latest education

Custom Solutions

We tailor our services to meet your specific needs, providing personalized recommendations

5-Star Rated

Our commitment to customer satisfaction means we prioritize your needs and work diligently to exceed your expectations

Peace of Mind

With professional installation, maintenance, and warranty services, you can rest easy

Health and Safety

Proper water treatment ensures the health and safety of your family or employees by providing clean water

Cost Savings

Preventative maintenance and timely repairs help avoid costly damage and reduce water waste

Contact Us Today to Get Started

Save More with National Water Service

We offer welcome deals for new customers, active duty military, and veterans. Print the coupon and present at time of installation. Coupon offers cannot be combined for multiple savings. Reach out today to get a quote on your next water treatment in Columbia, MD and see how we can help meet your budget. 

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.