How Much Does a Reverse Osmosis System Cost? (2026 DMV Price Guide)
Reverse osmosis systems are available at a wide range of price points — from a few hundred dollars for a basic countertop unit to well over $8,000 for a professionally installed whole house system. The difference comes down to what the system actually does, where it’s installed, and what your water requires. This guide breaks […]
Maryland Snow Alert: No Water & Frozen Pipes? What to Do Before (and During) the Freeze
With a major winter storm moving into Maryland and Virginia, well owners face a unique set of challenges. Unlike city water systems, well components like the pressure switch, well head, and pitless adapter are highly vulnerable to sub-zero temperatures. If you wake up to a loss of pressure, knowing what to do for frozen pipes […]
Whole House Reverse Osmosis Pros and Cons: What No One Tells You
When it comes to achieving the highest level of water purity, a whole house reverse osmosis system is the ultimate solution. Unlike a standard under-sink filter that only provides purified water at a single kitchen tap, a whole-house system treats every drop of water entering your home. Whether you are dealing with high mineral content, […]
How to Remove Radon from Water: A Technical Guide
If your home has tested positive for radon, the first step is determining if the gas is entering through the soil or your water supply. While air mitigation is common, radon in well water requires a specialized approach. Because radon is a dissolved gas, it cannot be “filtered” out with standard equipment; it must be […]
Salt Free Water Softener vs. Salt: The Honest Truth
Many homeowners search for a salt free water softener to avoid the hassle of salt bags and maintenance. While “salt-free” technology exists, there is a critical difference between conditioning water and actually softening it. At National Water Service, we believe in honesty. Helping Maryland and Virginia homeowners choose the right protection for their plumbing and […]
Potomac River Sewage Spill: Is Your Water Safe from E. Coli?
BREAKING NEWS: A major sewage spill has released millions of gallons of raw wastewater into the Potomac River, raising serious concerns for homeowners across Maryland, DC, and Northern Virginia. ⚠️ 2026 REPAIR UPDATE: While the initial leak was contained in February, authorities have announced that permanent infrastructure repairs will take 9 months. During this period, […]
Water Smells Like Rotten Eggs? Causes & How to Fix Sulfur Smell
There is nothing worse than turning on your shower and being hit with the overwhelming stench of rotten eggs. It makes you feel unclean, it’s embarrassing when guests visit, and it makes drinking your tap water impossible. If your water smells like sulfur, you are not alone. In Maryland and Northern Virginia, this is one […]
Does Hard Water Cause Hair Loss? The Truth & The Fix
You buy salon-quality shampoo. You take biotin supplements. You use expensive masks. But your hair still feels like straw, breaks easily, and seems to be thinning. If you live in Maryland or Northern Virginia, the problem likely isn’t your products. It’s your water. “Hard Water Hair” is a real condition caused by high levels of […]
Well Pump Maintenance: 5 Simple Checks Every Homeowner Should Do
If you are like most homeowners in Maryland and Virginia, you probably don’t think about your well pump until the water stops running. By then, it’s usually an expensive emergency repair. While submersible well pumps are designed to run for years without much attention, a little preventative maintenance can extend their life and save you […]
Well Water vs. City Water: Which is Healthier, Safer, and Better for Your Home?
Choosing between well water and city water impacts your water quality, safety, cost, and long-term maintenance. Homeowners across Maryland, Washington DC, and Northern Virginia rely on both sources — but each comes with unique challenges. Whether you are moving into a home with a private well or looking to improve your municipal water, understanding the […]
5 Essential Benefits of Effective Water Treatment for Your Home
Introduction Water treatment plays a vital role in protecting the quality, safety, and comfort of your home’s water supply. Across the United States, homeowners rely on clean water for drinking, cooking, bathing, and maintaining a healthy lifestyle. Even though municipal systems work hard to purify water before distribution, contaminants can still enter your home through […]
Taking Control of your Water
If you drill a hole in the earth, you are likely to get some of the earth’s elements in your water! Sediment, Acid Water, Iron, Manganese, Hard Water and Radon are just a few of the common ailments of well water. Any plumber can install a water filtration system, but the job of a water […]
Treating Groundwater Contaminated by Salt
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 […]
Fresh Drinking Water Is Our Passion
Ensuring clean, pure, fresh drinking water is our passion. Every Water Treatment System we install is specific to that customers water wants and needs. From Water Softeners, Acid Neutralizers, Reverse Osmosis Systems, Radon Mitigation, Chemical Feeders, Ultra-Violet System’s, Sediment Filters, Pressure Tanks, Carbon Tanks, Constant Pressure Systems and so much more, we design treatment specific […]
In-The-Well Pressure Tank
A major complaint we hear surrounds the size of water treatment equipment, specifically the pressure tank. Today, we installed a Flexcon In-The-Well Pressure Tank for a customer in Montgomery County, Maryland. An In-The-Well Pressure Tank has many benefits: 1. When you are finishing the basement and want to maximize available room. 2. If a previous […]