Open 24/7 for emergencies
SwiftPro’s licensed plumbers install whole-house water filtration and water softeners across Northern Virginia, and it starts with the water report for your ZIP and a test at your tap. Every option is priced in writing before any work starts, and every plumber is ours, under Virginia Class A contractor license #2705192276, rated 5.0 stars across 1,138 reviews. Call (703) 997-9757.
Tell us what you’re seeing: scale, a chlorine taste, or something on your water report.
5.0 stars across 1,138 reviews
Two of our plumbers in a Northern Virginia mechanical room, beside the furnace and the water heater.
Get your price in writing
Send this and the office calls or texts you back to set a time.
We’ll call or text this number about your request. By sending it you agree to our terms and privacy policy.
Rather talk now? (703) 997-9757
Licensed and insuredVirginia Class A contractor #2705192276
24/7 emergency serviceWe answer day or night, and we will tell you honestly when we can get there.
Our own plumbers, our own trucksNobody here is a subcontractor with a magnet on the door
The price is settled before the workYou see the number in writing before anything is taken apart
What’s in the water here
Federal legal limits weigh what treatment costs. EWG’s health guidelines are set on health research alone, so they sit far lower. None of the utilities below is over a federal legal limit in this data, and every one is over EWG’s guideline on 9 or more contaminants, most of them byproducts of disinfecting the water. Every one of them is also over EWG’s guideline on chromium-6 and nitrate. Five of the six utilities that print a hardness figure reach 7 grains per gallon or more, where water counts as hard.
| Water utility | Over EWG’s health guideline | Furthest over EWG’s guideline | Hardness, grains per gallon |
|---|---|---|---|
| Fairfax Water | 9 contaminants, 7 of them disinfection byproducts | Haloacetic acids (HAA9), 473 times | 3.0 to 10.8 (2025) |
| Prince William County Service Authority | 9 contaminants, 7 of them disinfection byproducts | Haloacetic acids (HAA9), 510 times | 2.6 to 10.5 (2025) |
| Loudoun Water | 9 contaminants, 7 of them disinfection byproducts | Haloacetic acids (HAA9), 552 times | None printed. Fairfax Water’s Potomac plant, its source, ran 4.1 to 10.8 in 2025 |
| Arlington County (DC Water Aqueduct) | 9 contaminants, 7 of them disinfection byproducts | Haloacetic acids (HAA9), 613 times | 8.3 (2025) |
| Virginia American Water (Alexandria) | 9 contaminants, 7 of them disinfection byproducts | Haloacetic acids (HAA9), 595 times | 4.6 to 11.2 (2025) |
| Town of Leesburg | 11 contaminants, 9 of them disinfection byproducts | Haloacetic acids (HAA9), 675 times | 5.8 to 8.8 (2025) |
| City of Manassas | 9 contaminants, 7 of them disinfection byproducts | Haloacetic acids (HAA9), 587 times | 2.7 (2025) |
Data from the Environmental Working Group (EWG Tap Water Database), which collects the water quality reports utilities publish, updated June 2026. We are not affiliated with EWG. Hardness is each utility’s own annual report (Loudoun Water’s source: Fairfax Water, 2025), and 7 grains per gallon is where USGS calls water hard.
That’s your utility, not your tap. Your pipes, your water heater and any filter you already have all change the numbers between the plant and your kitchen sink, so the test at your tap is how to know yours. Type your ZIP for your utility’s full report.
What we install
A water softener and a filter solve different problems, and people often buy one expecting it to do the other’s job. Here’s what each one reaches.
One faucet, at the kitchen sink or a bathroom sink.
It gets its own small faucet beside the main one and treats the water you drink and cook with. The dissolved contaminants on the utility reports, like chromium-6 and nitrate, take Reverse Osmosis (RO).
Every tap, every shower head and bathtub.
One tank where the water comes into the house. Salt-based resin takes out hardness, the scale on your faucets and the crust inside your water heater, and activated carbon takes out the chlorine taste and smell.
Every tap, plus Reverse Osmosis (RO) drinking water.
Both of the above together: the whole-home tank where the water comes in, and Reverse Osmosis (RO) at the sink you drink from.
Every tap, on the main water line.
A filter housing piped in where the water comes in, on a copper bypass loop with tagged shutoffs, so the water stays on in the house while the cartridge is changed.
What a particular unit takes out is what its manufacturer’s spec sheet lists, and we go through it with you at the test before you choose.
A whole-house water filter our plumbers piped into an Ashburn basement, on a copper bypass loop with tagged shutoffs so the water stays on while the cartridge is changed.
Filter or water softener
Start with what’s bothering you. Each problem has its own fix, and the wrong system won’t touch it.
| What you’re seeing | What fixes it | What won’t |
|---|---|---|
| Scale on faucets, spots on glasses, a water heater full of sediment | A water softener | A carbon filter or a pitcher filter |
| A chlorine taste or smell at the tap | Carbon filtration | A water softener on its own |
| Disinfection byproducts on your utility’s report | Carbon filtration at every tap, and Reverse Osmosis (RO) for the water you drink | A water softener on its own |
| Chromium-6 or nitrate on your utility’s report | Reverse Osmosis (RO) at the sink you drink from | A water softener or a carbon filter |
Hard water also settles as scale in the bottom of a water heater tank and coats the inside of a tankless one. Right now a water heater flush is $99, normally $199.
How it works
Type your ZIP on our water report page and your utility’s full report opens: every contaminant over EWG’s guideline, next to the legal limit.
One of our plumbers tests your water in your home: hardness in grains per gallon, chlorine, sediment, rust and iron, water pressure, your water heater’s age and condition, and where a system would go.
Side by side, each with its price, before any work starts. The choice is yours.
Our own licensed plumbers pipe it in, under our Virginia Class A contractor license #2705192276.
What it costs
Every house gets its own price, in writing, after the test at your tap. Three things set it.
Every current deal is on our offers page. Replacing the water heater too? Price a water heater and whole-home filter together, one install.
5.0 stars across 1,138 reviews
We recently hired SwiftPro in Fairfax County, VA to install a reverse osmosis water filtration system, … They were super professional, courtesy, on time, and pleasant to work with. Plus they got the job done at a fair price.…
Reverse Osmosis (RO) install, Fairfax County
Zabi came to test our water and get us an estimate on a water softener filtration system. He was amazing. Very professional and very honest.
Water test and water softener
…Some time later they also installed a water filter under my sink so that I don’t have to drink the chlorine filled pool water the city gives us anymore.…
Under-sink water filter
Copied as written on Google, cut to the part about the water. Read them all.
Who installs it
SwiftPro is family owned, with three locations in Chantilly and Ashburn, and every plumber who comes to your house works for us.
The SwiftPro plumbing team in front of three of our wrapped vans.
Where our plumbers work
Our main office is at 4230 Lafayette Center Dr N in Chantilly, our plumbing and water heater shop is at 4200 Lafayette Center Dr, Suite N, and we have an office in Ashburn. Our plumbers install water systems across Fairfax, Loudoun, Prince William, Arlington and Fauquier counties, including Chantilly, Fairfax, Centreville, Herndon, Reston, Ashburn, Sterling, Leesburg and Vienna. Pick your town below for its plumbing page.
Asked on the phone
SwiftPro does. Our own licensed plumbers install whole-house water filtration, water softeners and Reverse Osmosis (RO) across Fairfax, Loudoun, Prince William, Arlington and Fauquier counties, under Virginia Class A contractor license #2705192276. It starts with the water report for your ZIP and a test at your tap, and every option is priced in writing before any work starts. Call (703) 997-9757.
It depends on what you are fixing. Scale on faucets, spots on glasses and a water heater full of sediment point to hardness, which a water softener fixes. A chlorine taste or smell points to carbon filtration. The dissolved contaminants on the report, like chromium-6 and nitrate, take Reverse Osmosis (RO). Plenty of homes here want two of the three. Our water softener versus whole-house water filter guide goes deeper.
It depends on what the test at your tap finds and what the house needs: a water softener, carbon filtration, Reverse Osmosis (RO) at one sink, or two of them together. Every option is priced in writing, side by side, before any work starts, and every current deal is on our offers page.
A water softener needs salt added to its tank. Filter cartridges, and the filters in a Reverse Osmosis (RO) system, get changed on the schedule in the unit’s spec sheet. A whole-house filter on a bypass loop keeps the water on in the house while its cartridge is changed, and our sticker on the housing has the number to call when it’s due.
With the test at your tap. The ZIP report covers public water utilities, and a private well gets no routine testing from anyone unless the owner does it. Our plumbers also repair and replace well pumps and pressure tanks. Well pump prices.
Start with your water
Type your ZIP on the water report page for your utility’s numbers, or send the form at the top and the office calls or texts you back to set a time for the test at your tap.
SwiftPro Heating, Cooling & Plumbing
4230 Lafayette Center Dr N, Chantilly, VA 20151
44679 Endicott Dr, Suite 211, Ashburn, VA 20147
SwiftPro Plumber & Water Heaters
4200 Lafayette Center Dr, Suite N, Chantilly, VA 20151
Virginia Class A contractor license #2705192276
