Installing a Reverse Osmosis (RO) water treatment system will remove 99.9% of all contaminants from your water, providing safe, healthy, clean water for you and your family! But equally as important, you will never have to buy bottled water again. Healthy living and saving the planet at the same time. The price of an RO fully installed in your kitchen is about the same price the average family spends on bottled water each year!!!! 








Learn More at our Revere Osmosis Gallery:


The U.S. General Accounting Office reports that there are serious deficiencies in water treatment plants in 75% of the states. More than 120 million people (about 50% of the population) may get unsafe water according to a study conducted by the Natural Resources Defense Council. “The chlorine used to reduce the risk of infectious disease may account for a substantial portion of the cancer risk associated with drinking water.” Do you know what is in your water. National Water has spent the last 40 years educating our customers on their water and working with them to create a water treatment specific to their individual needs. 

Click the link for more info:

One of the most commonly used but misunderstood water treatment systems is a Chemical Feeder. A Chemical Feeder is among the most effective and economical ways to treat your waters pH and odor issues.

One of the main purposes of a chemical feed system is to control the pH of your water. The system measures the amount of water used and pumps different chemicals, including, but not limited to, sodium hydroxide (caustic) or soda ash into a mixing tank at the appropriate amount to ensure that the pH of your water is neutral or around 7.2.

Chemical feeders are also very effective in treating certain types of bacteria, iron and manganese as well as eliminating odors such as hydrogen sulfide (rotten egg smell) that may be coming from your well water by adding chlorine to the mixing tank.

Working in conjunction with your other Water Treatment equipment, a Chemical Feeder allows you to control the pH of your water and eliminate any corrosion that may occur in your plumbing.

If you think a Chem Feeder is right for you or you would like additional information, please email National Water at or call us at 301-854-1333!



Groundwater or well water is water that can be found under the earth’s surface, stored in the cracks and spaces between particles of soil, sand and rock. Well water may naturally contain many different impurities including, but not limited to, bacteria, sediment, radon, coliform, e-coli and more.
Well water can also become contaminated when pollutants on land seep into underground aquifers. Our customers well is located next to a city street in Randallstown, MD and became contaminated with sodium chloride (salt) from trucks pre-treating roads before snow storms.
To remove the salt from his now brackish well water we installed a 2000 gallon per day whole house commercial grade Reverse Osmosis (RO) water treatment system. The RO forces the brackish water through the filters and membrane, capturing & removing 99.99% of all contaminants, including the salt.
In addition to the RO, we installed a water softener, turbidity filter, sediment filter and an 800 gallon storage tank to hold the now clean water. We installed an Ozone Bubbler for tank disinfection, a Chemical Feeder to control the pH of the RO water and booster pump to increase the water pressure for the entire house.
No matter if your well water is contaminated by natural or human causes, a professional water technician will be able test your water and install the proper remediation. Water Treatment is for everyone!

A lot of attention, and rightfully so, is being paid to lead in our nations water supply. However, recently more contaminants are being tested for and found in our tap water. From different types of bacteria such as e-coli and coliform to fluoride and chlorine, our tap water is not what we expect it to be. Now, prescription drugs from stimulants and sedatives to tranquilizers and opioids are in the water our families use! It’s time to make changes before its to late. If your local water company won’t, perhaps its time to look into the different water treatment options available to you in your home and office! 

The #1 Reason Why You Must Stop Drinking Tap Water

Over the last 12-18 months we have seen a huge increase in the number of people asking us to test for Radon in their well or ground water and the number of remediation systems we have installed.
Most of central Maryland, per the US Geological Survey, has some of the highest levels of Radon in groundwater in the country. Radon is found in both air and water and is the #1 natural cause of lung cancer and the #6 cause of cancer overall in the US accounting for over 21,000 preventable deaths per year according to the CDC and American Lung Association.
If you home is on well water, have your water tested, it could save a life.


Every Tuesday morning we have a continuing education meeting. We discuss new products and advancements in well pumps and water treatment technology, we invite speakers and discuss our customers experiences over the previous week and how we can improve. We also look at what jobs we have coming up and make sure everyone in the office and in the field is ready! Nothing is more important to National Water then our techs being knowledgeable and prepared for our customers!

As we install three Radon Aeration Systems for water in peoples homes this week, we wanted to provide some insight into this gas. Radon is the leading natural cause of lung cancer in the United States and the 6th leading cause of all cancers. While the EPA and most States only require it to be tested in your air, it can and be very prevalent in your water as well. In the past three weeks, National Water has seen the highest concentrations of Radon in water that we have ever tested for, mostly in Howard and Montgomery Counties in Maryland. Please call us to have your water tested, it could save a life!

For more information check out this link:  

Lead in water is not only a problem for residents of Flint, Michigan or Washington, DC, it effects everyone. In August of 2018,  students at 90 Montgomery County, MD public schools may have been exposed to lead concentrations higher than the EPA’s “action level” of 15 parts per billion.

Lead is a naturally occurring, common metal found throughout the environment. Lead seldom occurs naturally in water supplies such as lakes and rivers. Lead enters drinking water as a result of corrosion or wearing away of municipal water pipes and household plumbing that contain lead.

Lead is a toxic metal that can cause immediate effects at high doses and long term effects if it builds up in the body over many years. Lead can cause damage to the brain and kidney and has serious effects on your blood. Children are the most vulnerable to lead poisoning because their bodies are smaller and still developing. Pregnant women are also at higher risk for negative health effects associated with lead exposure.

In 1991, the EPA published the Lead and Copper Rule that requires all municipal or public drinking water systems regularly test a sample of homes for lead at the tap. If more than 10 percent of homes tested have lead concentrations higher than the EPA’s “action level”  individual water companies are required to notify area residents via any means necessary including social media, TV, radio, phone calls to customers and more. The EPA is currently considering long term revisions to the Lead and Copper Rule.

In January 2014 revisions to the Safe Drinking Water Act made it illegal to install any pipe, or plumbing fixture or fitting during installation or repair of a municipal water system or  customer’s drinking water plumbing unless it meets the definition of “lead-free” or not containing more than 0.2 percent lead.

However, in 2016 USA Today reported that they have identified around 2,000  water systems spanning all 50 states where testing has shown excessive levels of lead contamination over the past four years. The water systems, which reported lead levels exceeding EPA standards, collectively supply water to 6 million people.

As a result of the revisions to the the Safe Drinking Water Act & the Lead & Copper Rule, older homes are more likely to have plumbing fixtures containing lead.

If you’re concerned about lead in your drinking water or would like to learn more about why in-home water treatment is the consumer friendly answer to your families water wants and needs, please call us at 301-854-1333 or by  email at


Are you interested or do you think you need water treatment for your home or place of business? Here are some of the benefits of using National Water for your water treatment needs:

Free Consultation:  Before we install any water treatment system, we send one of our experienced technicians to your home or office for a free consultation. We test your water, discuss with you our findings,  talk about what you like and don’t like about your water and what you are looking for in a water treatment system. Only after the consultation will we make recommendations as to what water treatment system best suits your wants and needs.

Safer, Cleaner Water: Undoubtedly, the top benefit of installing a water treatment/purification/filtration system is that you will have safer, cleaner water that will benefit the health of you and your family members. A  water treatment system, which National Water always customizes to each individual customers wants and needs,  can remove impurities such as sediments, chlorine, radon, bacteria and other containment from your water. In addition to being cleaner and safer, your water will also smell and taste better and you will no longer have to spend money on plastic water bottles that end up in our landfills.

Eliminate Your Water Issues: The primary reason to install a water treatment system is to remove dirt, sediment, radon, bacteria and any of the other 18 million contaminants that can be in your water. 


At National Water, we don’t just address the contaminants in your water, but any other issues you may be having with your water such as pH and hardness. Addressing the issue of hard or soft water or low or high pH with a water treatment system will prevent corrosion in your pipes as well as spotting on your dishes and staining on your appliances. In addition, we offer flood prevention, storage tanks for low yielding wells, constant pressure systems and much more to allow you to be in complete control of your water.

Low Maintenance with Annual Service: A quality water treatment system can last decades and should require little to no maintenance to the homeowner. We do however recommend, to prolong the life and efficiency of your system, to have annual maintenance completed by a certified water treatment specialist.

National Water offers a range of water purifying, filtration and treatment systems that will address your specific water wants, needs and issues. Call or email National Water to schedule one of our experienced technicians for a free consultation today at 301-854-1333 or


For over 30 years, National Water Service has been serving the entire Mid-Atlantic regions well water, well pump and water treatment, purification and filtration needs!