For over forty years, National Water Service has been installing and servicing water systems for residential homes and commercial properties throughout DC, Maryland, and Virginia. As a five-star rated water treatment company, they offer water testing, water treatment solutions, well pump services, water heaters, general plumbing, and more. Whether on city water or on well water, they have the experts to come out and handle any water service, including purification, filtration, and more.

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Reviews

BC
Brian C.

02/01/2022

Provided by YP.com

“We lost our water on Sunday and could not reach our regular plumber. I searched online and found National Water Service along with several other companies. I based my decision to select them based on their customer reviews. My initial contact with Dave was met with an eagerness to help try and restore our water ASAP. Our system is electronic and he guided me through some procedures to attempt a “reset” over the phone ( BTW all done without getting $$ upfront) After several attempts it appeared that the mechanical pump and/or the control unit may have failed and they would have to schedule the repair for the next day as it was 6PM Sunday evening and the pump in my system was not a common pump and had to be picked up at a warehouse. They arrived Monday with the pump and controller but took the time to troubleshoot and diagnose the root cause (rather then just replace the pump and controller. ) The pump was tested and verified bad. Daniel and crew proceeded to replace the pump, tested the system after repair and cleaned up all work areas. He also made sure our lines were clear of mud/dirt/minerals that are often an issue after a well pump failure. All of my interaction from initial contact to the crew installing our pump were polite, professional and empathetic (a rare combination these days!) National Water Service will be our first call whenever we have a plumbing need in the future. "

SP
S P.

12/05/2018

Provided by YP.com

Excellent Service, trustworthy and dependable. Very organized service provider. We had a leak in the water filtration system causing water spill. Matt explained the options to stop the leak and was able to schedule the technician to come and fix the leak in very short time. Was able to send email with pics and, received automated text/email messages for appointment, during technician's dispatch and job completion in timely manner. These kept us informed of service which was helpful.
The Technician Pat was courteous, knowledgeable, organized and ensured the site was clean before leaving. He fixed the leak and during the system service, tested for drinking water and provided/explained the results. He also explained the particulars of filtration system and how it worked, which helped us change some setting to suit our requirements. The charges were also accurate based on service provided. I would recommend NWS.

claimed iconBusiness Response12/06/2018

S and P, nothing is more important to us than our communication and customer service. I am so glad your service went as planned, that all your questions were answered and most importantly that you water is fresh & clean. We look forward to continue working with you for many years to come!

This listing has been claimed by a business representative.
TM
Tucker M.

11/07/2018

Provided by YP.com

National Water Service techs came out to out property to service (annually) our UV disinfection and filtration systems. They had all the right parts and enough filters to leave me with enough to keep our water clean until well beyond the next service

claimed iconBusiness Response11/12/2018

Tucker, Always a pleasure to work with your organization. Such great work you do. Thank you for the continued trust in National Water and we look forward to working with you for many more years.

This listing has been claimed by a business representative.
KG
Kay G.

03/08/2018

Provided by YP.com

National Water Service always does a great job. Reliable, punctual and dependable
K. Grant
Davidsonville

claimed iconBusiness Response03/14/2018

Thank you Kay. It is always a pleasure speaking with you and taking care of your water treatment equipment. We hope you have a very happy spring!

This listing has been claimed by a business representative.
JP
Jessica P.

01/02/2018

Provided by YP.com

Excellent company very through, professional and friendly. They even called in advance to let me know how long it would be before they arrive which is great love not having to wait around wondering. Highly recommended!

claimed iconBusiness Response01/03/2018

Jessica, thank you so much. We understand peoples time is valuable and we work very hard to accommodate everyone's schedule. I am glad Pat took the time to answer the questions you had for him. I hope you and Joseph have a very Happy and Healthy New Year!

This listing has been claimed by a business representative.
BB
Bill B.

12/13/2017

Provided by YP.com

We recently contacted NWS when our water pressure tank was leaking. Looking closer, it was really about to rupture. NWS came out on Saturday and prevented an imminent disaster. Since then we have replace our water filtration system and now have better water pressure than we have had in 20 years.

All of the people at NWS are friendly, responsive, and most importantly, highly competent. I could not recommend them more.

claimed iconBusiness Response12/14/2017

Bill, we know nothing is worse than waking up to no water or a leak and that is exactly why we have our emergency response team. I am so glad your water is better than it has been in 20 years and we all look forward to working with you for many years to come!

This listing has been claimed by a business representative.
NK
Nuhad K.

12/12/2017

Provided by YP.com

What a positive surprise to have very professional, honest, good technicians taking care of our well pump on time so we get back our normal functions. exceptionally good people and would recommend them any day any time. every step was explained with good knowledge and no pressure.

claimed iconBusiness Response12/12/2017

Nuhad, Thank you for the kind words about our technicians. We know it is never fun to wake up to no water or low water pressure, but I am very glad we were able get your water restored, we are always of service!

This listing has been claimed by a business representative.
AD
Ann D.

11/20/2017

Provided by YP.com

Service, price, technician, timeliness--survey says it all--You're the best! Have used this company for fifteen years--
Always 5 star.

claimed iconBusiness Response11/21/2017

Ann, Thank you, as always, for your continued support of National Water and for the wonderful review. We look forward to working with you for many years to come. 15 years is just the beginning!

This listing has been claimed by a business representative.
MD
Miles D.

10/19/2017

Provided by YP.com

Fantastic Service, I had no water pressure, nothing coming out of the faucets. They got my call at 7:45 AM and everything was working by lunchtime.
The bill was surprisingly reasonable

claimed iconBusiness Response10/23/2017

Miles, it is always a pleasure working with you, Cody and everyone in the Dillon family. Glad that water is back on and flowing. Here's to many more years working together!

This listing has been claimed by a business representative.
IT
Ilene T.

08/22/2017

Provided by YP.com

We have had our system for about 3 years and are very happy with the service and professionalism of everyone involved.
The owner was very helpful when we were drilling our granite and the tech's are always courteous. We have dogs and each tech that has come to our home, has always been extra kind to them. Thank you for a wonderful product! Ilene T.

claimed iconBusiness Response08/22/2017

Ilene, Thank you, as always, for the kind words and continued faith in National Water!

This listing has been claimed by a business representative.
DC
Debra C.

01/01/2017

Provided by YP.com

National Water installed a new Reverse Osmosis (RO) system in my home last week. They were professional, showed up on time, were very easy to work with and the price was right! I could immediately tell the difference between my tap water, which has this metallic/chemical taste to it and the RO water, which was clean, fresh and reminded me of the water I had as a child. Even my 15 year old dog, who is suffering from bladder cancer, and refuses to drink water much anymore, drank an entire bowl of the RO water almost immediately. I highly recommend National Water for their experience, reliability and quality of their products and work! I love my new Water Treatment System!

claimed iconBusiness Response01/03/2017

Thank you for the kind words Debra! I am so pleased both you and your dog are enjoying the Reverse Osmosis Water! I believe our office posted some of your installation pictures in the photos sections here on YP. I hope you had a very Happy New Year and we look forward to working with you for years to come!

This listing has been claimed by a business representative.
TV
Tony V.

06/03/2016

Provided by YP.com

Hey if you trust these guys they will not let you down,
Been with them for years
Thanks !! Bought a water filtration system and softener and they come service every year, never a problem !

claimed iconBusiness Response12/22/2016

Tony, thank you for the kind words. It is always a pleasure to work with you. Have a wonderful holiday season!

This listing has been claimed by a business representative.
MK
Matt K.

05/10/2016

Provided by YP.com

The service is timely, friendly, knowledgeable, and fast. My softener system service was completed quickly and the gentleman provided a lot of good tips/recommendations for us.

claimed iconBusiness Response10/23/2017

Matt, Thank you for your continued support of National Water and for the wonderful review. We look forward to working with you for many years to come.

This listing has been claimed by a business representative.

More Business Info

Serving all of Maryland, Virginia, and Washington D.C. for superior Water Treatment and Well Pump Service

BBB Rating
A+
BBB Rating and Accreditation information may be delayed up to a week.
Hours
Regular Hours
Mon - Thu:
Fri - Sun:
Services/Products
No Water, Sediment Filtration, Reverse Osmosis, Acid Neutralizers, Water Softeners, Carbon Tanks, Iron Removal, Sulfur Removal, Ozone Purification, Radon Remediation, Ultraviolet Purification, Chlorine Removal, Stains & Smelly Water, Constant Pressure, Well Pumps, Well Pump Replacement, In-Well Camera Service, Booster Pumps, Well Disinfection, Hydro-Fracking, New Construction, Trenching Service, Water Tank Service,Comprehensive Lab Testing, Low Yielding Well Options, Storage Tank Options and more!
Payment method
amex, insurance, visa, discover, mastercard, all major credit cards, check, debit
AKA

NWSC

National Water Service Corp

Categories
Water Softening & Conditioning Equipment & Service, Water Filtration & Purification Equipment, Water Well Drilling & Pump Contractors, Water Works Contractors
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