Better water, installed.
Whole house filtration, water softeners and reverse osmosis for Northern VA, DC and MD homes. $2,499 installed.
Your utility
- Hardness
- Disinfectant
- Source
What we would install:
Data from the utility's published reports as of . See EWG's tap water database for this ZIP.
Price published online
$2,499 for the full package. No kitchen-table pitch.
Licensed, insured plumbers
Installed by licensed plumbers in VA, DC and MD.
10-year equipment warranty
Tanks and valves for 10 years, workmanship for 1.
Sized from real data
Your utility's reported hardness and disinfectant, not a guess.
From consultation to completion in 3 easy steps
Request a consultation
Send your address and the service you want. We check your utility's published hardness and disinfectant and ask a few questions about your home.
Get one firm price
Within a business day you get the exact equipment we recommend, with model numbers, and an installed price that does not change on install day.
Licensed plumber installs it
A licensed, insured plumber installs the system in two to four hours, tests it, and walks you through salt and filter changes. Then you forget about it.
Complete water filtration and treatment for DMV homes
We only do water treatment. No drain cleaning, no water heaters, no upsells. Every install is a system we have put in dozens of homes across the region.
Whole House Water Filtration
Whole-home filtration and softening installed for $2,499 in Northern Virginia, DC and Maryland.
Learn moreWater Softener Systems
Metered water softener installation sized to your utility's reported hardness in Fairfax, Arlington, Loudoun, Montgomery County and DC.
Learn moreReverse Osmosis Drinking Water
Under-sink reverse osmosis installed from $799 in Northern Virginia, DC and Maryland.
Learn moreWell Water Treatment
Well water treatment designed from a certified lab test: iron filters, acid neutralizers, softeners and UV for Loudoun, Howard and Frederick County wells.
Learn moreThe DMV's trusted water treatment partner
Every utility we serve meets federal standards, and we will never tell you otherwise. What they deliver is water with 5 to 10 grains of hardness in Fairfax County, about 8 in Arlington, and a chloramine residual that a fridge filter barely touches. That is what a home system is for.
Published pricing
$2,499 installed for the complete package. No in-home sales appointment.
Sized from your utility's data
Fairfax Water, DC Water, WSSC and the rest publish their numbers. We read them before we quote.
Licensed, insured installers
Every system is installed by a licensed plumber in Virginia, DC or Maryland.
Honest scoping
A softener does not remove lead. A carbon filter does not soften. We tell you what each system does and does not do.
Published prices. No in-home sales pitch.
Prices include equipment, a licensed plumber's installation and startup for a standard install. If anything about your home changes the price, you hear it before we book the plumber, not after.
Whole-Home + Drinking Water
The complete package for a municipal-water home.
$2,499installed
- Metered whole-home softener
- Catalytic carbon for chloramine and chlorine
- Sediment pre-filter and bypass
- 5-stage under-sink reverse osmosis with faucet
- Licensed installation, startup and salt
Whole-Home Only
Soft, chlorine-free water at every tap and shower.
$1,899installed
- Metered whole-home softener
- Catalytic carbon media
- Sediment pre-filter and bypass
- Licensed installation, startup and salt
- Add reverse osmosis any time
Reverse Osmosis Only
Clean drinking water for condos and kitchens.
$799installed
- 5-stage NSF/ANSI 58 system
- Removes lead, PFAS and dissolved solids
- Dedicated lead-free faucet
- Optional fridge and ice line
- Licensed installation and first filters
Standard install covers
- Main water line, a drain and an outlet within reach in a basement, garage or utility room
- Kitchen sink with cabinet space for the reverse osmosis unit
- Copper or PEX supply lines in serviceable condition
- Permit where your jurisdiction requires one
Quoted before we book
- Long plumbing runs to reach the main line, or adding a drain or outlet
- Crawlspace or exterior installs, and galvanized pipe that needs replacing
- Private wells: lab test first, then a system designed to the results
- Fridge and ice maker line for the reverse osmosis unit
How the price compares
Published price ranges from other DMV companies' websites for comparable equipment, as of September 2026. Scopes differ, so read them as context, not as identical quotes.
| Option | Softener + carbon | Under-sink RO | How you buy |
|---|---|---|---|
| DMV Water Pros | $1,899 | $799 (or $2,499 together) | Price published online |
| Owner-operated specialist (published list) | $4,350 to $4,500 | $2,500 to $2,650 | Photo triage, then quote |
| Large plumbing company (published range) | $5,000 to $11,000 | $800 and up | Technician visit, flat-rate quote |
| National brand dealer | Not published | Not published | In-home sales appointment |
Other companies' figures come from their own published price pages and cover different equipment scopes.
DMV water is safe. It is also hard and chloramine-treated.
Hardness leaves scale everywhere
Faucets, shower glass, dishwashers and the inside of your water heater.
Chloramine is not chlorine
Fairfax, Arlington, DC, Loudoun and Prince William all use it. Only catalytic carbon removes it reliably.
Lead and PFAS are a tap problem
They come from old plumbing and the river, and reverse osmosis at the kitchen sink is the practical fix.
Sound familiar?
Most people do not search for a water softener. They search for the thing that is annoying them. Start with the symptom.
Serving homes across the DMV
Local pages cover your utility's numbers, the homes in your area and what we typically install there.
Northern Virginia
Fairfax Water produces most of the region's drinking water and reports 5 to 10 grains per gallon of hardness. Arlington, Alexandria, Loudoun and Prince William all share the same Potomac and Occoquan sources and the same chloramine disinfection.
Washington, DC
DC Water publishes a hardness range of 70 to 120 ppm (roughly 4 to 7 grains) and uses chloramine year-round. Its Lead Free DC program is still replacing lead service lines in older neighborhoods.
Suburban Maryland
WSSC Water serves most of Montgomery and Prince George's counties from its Potomac and Patuxent plants and uses free chlorine rather than chloramine. Rockville, Frederick and Bowie run their own systems.
Frequently asked questions
What exactly is included for $2,499?
A metered whole-home softener with catalytic carbon media, brine tank, sediment pre-filter and bypass, plus a 5-stage under-sink reverse osmosis system with its own faucet. Installation by a licensed plumber, startup, initial salt and a walkthrough are included for a standard install.
What counts as a standard install?
The main water line, a drain and a standard outlet all within reach of each other in a basement, garage or utility room, and a kitchen sink with cabinet space for the RO unit. Most DMV homes qualify. If yours does not, we tell you the added cost before anyone shows up.
Do you come to my house to sell me something?
No. We confirm your utility and home details by phone or text, give you a firm price, and the only visit is the installation. If you want an in-home water test first, we can arrange one.
Who does the installation?
Licensed, insured plumbers who install water treatment systems for us every week. They do not sell, upsell or quote; they install the system you already agreed to.
Is the water in Northern Virginia, DC and Maryland safe?
Yes. Every utility we serve meets or exceeds federal standards, and we will never tell you otherwise. What the utilities cannot do is deliver soft water or remove the disinfectant they are required to add. That is what a home system is for.
How long does installation take?
Two to four hours for the whole-home system and about an hour for the reverse osmosis unit, usually in one visit. Water is off for roughly an hour.
What maintenance is there?
Add salt to the brine tank when it runs low (one or two bags a month for most families), change the sediment pre-filter every 6 to 12 months and the RO filters once a year. We offer an optional annual service visit if you would rather not.
Do you serve well water homes?
Yes, but differently. Well water needs a certified lab test first because iron, manganese, pH and bacteria each need their own treatment step. We quote well systems after the test, not from a package price.
Ready for better water?
Send your address and we will call or text within one business day to confirm your price and book the installation. That is the only visit.