Water… It’s What We Do!
Testimonials for National Water Service in VA, MD & DC
At National Water Service, nothing means more to us than the satisfaction of our customers. For over 45+ years, we’ve delivered trusted water treatment solutions, well pump repairs, and plumbing support to homeowners and businesses across Maryland, Northern Virginia, and the D.C. Metro area.
The testimonials below reflect the real experiences of customers who’ve relied on our prompt, professional, and knowledgeable service. Whether it’s installing a water softener, responding to a no-water emergency, or providing clean drinking water through filtration systems—you’ll see why so many people trust National Water Service for peace of mind and quality that lasts.
Responsive
Knowledgeable
I can’t say enough about National Water Service. The team is very knowledgeable about the water treatment business. Great service, courteous techs, and on time for appointments. In emergencies NWS has always been there for me. Thank you and keep up the good work. I would highly recommend!!!🤩🤩🙌🏽
Cost-Effective
I had a leak in my whole house water filtration system that no plumber could figure out. Enter Peter and Christian from National Water Service, who diagnosed the problem in short order AND came up with a cost effective resolution! They were knowledgeable, professional, personable and great to work with! Thank you!
Yes—every testimonial on this page comes from real customers we’ve served across Maryland, Northern Virginia, and the D.C. Metro area. We’re proud to share their feedback to give future customers a genuine look at what it’s like to work with our team.
Hearing directly from our customers helps new clients understand what to expect—from the quality of our work to our reliability, response time, and customer care. We value transparency, and testimonials help show how committed we are to service excellence.
Customers often comment on:
Overall professionalism and responsiveness of our technicians
Yes, we serve residential and commercial properties, and we’re happy to provide references or case studies for larger projects. Contact our team to learn more.
National Water Service has been providing residential & small commercial water treatment, plumbing & well pump services for over 45 years. We specialize in water treatment, filtration & purification solutions as well as general plumbing to ensure clean, safe water for our customers in Maryland, DC & Northern Virginia.
Mon - Thurs
7:00am - 5:00pm
Friday
7:00am - 4:00pm
Sat - Sun
Emergency Service Available
National Water Servicing Corporation — 2025 All Right Reserved ™
