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National Water Service

5.0 135 reviews
Water Purification Services, Water Heater Installation/Repair, Plumbing
Overall rating
5.0
out of 5
135 reviews
5 star 97%
4 star 1%
3 star 0%
2 star 1%
1 star 1%

About National Water Service

National Water Service has been providing water system installation and servicing in the DC, Baltimore, and Frederick Metro areas for 40 years. They collaborate with architects, builders, and construction firms to create custom water treatment and purification solutions for homes and businesses. The company offers a free basic analysis of water and existing water treatment.

Their installers are professionally trained in water treatment, purification, and filtration and are certified well water specialists. A customer who is new to well water praised the technicians for being super professional and communicative, providing a detailed overview of the home water system and educating them on maintenance between visits. Another long-term customer, who has been with National Water Service for 25 years, shared a positive experience when their well pump failed. The technician, Daniel, quickly assessed the issue and arranged for a replacement, ensuring that water was flowing again by noon the next day. Overall, National Water Service has consistently delivered high-quality, reliable, and professional service to their customers for many years.

Sep 2026
5.0
Excellent customer service. We are big fans of National Water Service. Their team always arrive on time, are very professional and have a great product. We love the taste of our water and knowing it is clean from contaminants makes us feel safe and healthy. We highly recommend National Water Service for a house water softening system as well as their filters for kitchen use.
Aug 2026
5.0
I had the pleasure of having Daniel, the technician come out for an annual checkup on our well and water system. As a person new to this type of water system, he was very knowledgeable and patient to explain how the well system works and the things we would need to watch out for. He was also able to fix a leaky pipe issue, linked to the well system. Overall, my interaction with the company was an excellent experience starting with the process of making the appointment (the person I spoke to on the phone was also super friendly and helpful), all the way to the courteous, timely, and skilled technician who came out and did a wonderful job.
Aug 2026
5.0
Awesome folks. Super informative. No “sales” pressure. They keep excellent documentation and photos of currently installed equipment and service records. They provided me all the information I needed to maintain my newly acquired water treatment system.
Photos of National Water Service, 2878 Daisy Road,  Highland
All 38 photos

Hours

Monday 7AM - 5PM
Tuesday 7AM - 5PM
Wednesday 7AM - 5PM
Thursday 7AM - 5PM
Friday 7AM - 4PM
Saturday 7AM - 4PM
Sunday 7AM - 4PM

Good to know

  • accepts credit cards

Location

2878 Daisy Road, Highland, MD 21797

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National Water Service · 2878 Daisy Road, Woodbine, MD 21797

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