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SwiftPro tests and repairs backflow preventers in Purcellville, and the yearly test is $250 a home (normally $300). Call SwiftPro, rated 5.0 stars across 1,130 reviews, at (703) 997-9757, 24 hours a day, 7 days a week.
SwiftPro’s plumbers in Purcellville are rated 5.0 stars across 1,130 reviews and work under Virginia Class A contractor license 2705192276. Backflow testing in Purcellville, in town or out in 20132: the device tested and signed on the Town’s report, repaired if it fails, inside the Town’s window. Book it at (703) 997-9757 or online. We’re rated 5.0 stars across 1,130 reviews, and we set the visit around the date on your notice.
5.0 stars across 1,130 reviews
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Licensed and insuredVirginia Class A contractor #2705192276
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What it costs
The yearly test is $250 a home, normally $300, and you can pay for it online. HOA and condo communities that book their units together pay $175 to $225 a unit. A new preventer, installed and tested, runs $800 to $1,200. Those are for a home’s device up to 1 inch; where an HOA unit or a new preventer lands in its range is set at the house and quoted before we start.
Yearly backflow test, one home
$250 (normally $300)
HOA or condo units booked together, per unit
$175 to $225
New backflow preventer, installed and tested
$800 to $1,200
Repair or rebuild after a failed test
Priced in writing before any work
Prices checked .
A device that fails is priced in writing before any work. Most can be rebuilt with new springs, seats or rubber parts; a body cracked by a freeze gets replaced. Either way it’s tested again afterward, which Virginia requires.
Booking for an HOA, townhouse or condo community? Here’s what each unit pays when the community books one visit. And what a backflow test costs covers what moves the price up or down.
What’s different in Purcellville
The Town of Purcellville doesn’t wait for you to remember. Each year it mails its Cross Connection Control Devices Test Report to the addresses it counts as at risk, and the dates run from that letter, so the day it lands is the day to book. The report says where it goes: the signed original to the property owner, a copy to the Town. Keep the original with any repair receipts; the Town’s brochure asks owners to hold onto them.
Half the homes in town went up since 2000, and the median owner home dates from 2001. In neighborhoods from those years, Village Case among them, a lawn system often came with the house, buried and fed from the basement. The Town’s hazard table puts below grade sprinklers in its high row, and the device it suggests for that row is an RPZ or an air gap. So if an older PVB ever needs replacing rather than a rebuild, ask the Town which device it wants first. Added sprinklers yourself? The brochure puts that line on you.
The Town also wants a vacuum breaker on every hose bibb, inside or out, apart from the washer and dishwasher, and it warns that one can keep the spigot from draining and freeze it. The first fall freeze here comes around October 25, so pull the hoses now, and when a spigot needs replacing, buy the self-draining kind. A yard hydrant that drains into the ground through a weep hole needs a device such as a dual check on its line.
One more number the report asks for: line pressure at the time of the test. The Town’s FAQ says its system runs high and suggests a pressure reducer if the house has none, so ask your tester what the gauge read. Past the town limits, most homes in 20132 run on their own wells and get no letter from the Town. A house out there that buys Town water is still in the Town’s program, and if Loudoun Water sends the bill, its rules apply; see backflow testing in Loudoun County.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
Inside the town limits: the downtown grid around Main and 21st Streets, the historic corridors along Main, 21st, 23rd and 32nd Streets and Berlin Turnpike, and the newer neighborhoods such as Village Case.
When it’s time
About one home in five in town is a townhouse. On a row like that, the grass out front usually belongs to the association, and so does the device that waters it, so the Town’s letter for it goes to whoever runs the system. When an association books its units together, here’s how a community test works.
In a newer subdivision the builder often put in the lawn sprinklers, and the backflow device with them. Nobody tells the next owner it needs a test every year until the first notice shows up.
Anything piped to the water supply that could push water back into it gets a device: lawn sprinklers, a pool fill line, a hot tub. More yard usually means more of them.
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Before the first hard freeze
A device that sits full of water all winter is the most common reason it fails the spring test. Around here, get this done by the end of October.
On most houses it’s outside by the foundation: a brass valve on two pipes standing out of the ground, with a cap on top. That’s a PVB. An RPZ or double check may sit in a basement or a box in the ground instead.
Turn off the valve that feeds the sprinklers, usually in the basement or utility room just past the main shutoff. Leave the rest of the house on.
Most systems here get blown out with compressed air so nothing sits in the lines or the device. If yours hasn’t been, that’s the step that matters.
Set the device’s two shutoff handles and its little test cocks about halfway, near 45 degrees, so no pocket of water stays trapped inside to freeze.
An insulated cover helps a PVB through the winter. On an RPZ, never block the relief valve opening underneath: it has to be able to dump water.
Some owners bring the device inside for the winter. Check the rules first: Loudoun Water wants a device that came off tested again when it goes back on, and Fairfax County wants it back on before your testing month.
Not sure it was drained, or saw water coming from the cap when the sprinklers ran? Call us. We’ll look at it, and if it cracked, you get the reason and a price before anything gets replaced.
Who sends the notice
The Town of Purcellville mails a form every year to customers it counts as at risk, homes included. A state-certified plumber tests the device and signs it, and the form is due back at the Town Office within 30 days. A reminder gives 30 more, and after that the Town shuts off water until the form comes in. Source.
Below-grade lawn sprinklers and fire sprinklers are on the Town’s high hazard list, and yard hydrants and hose bibbs need vacuum breakers. Source.
Loudoun Water wants testable backflow devices tested every year by a certified tester. A device that fails has 30 days from Loudoun Water’s notice to be repaired and retested, and one taken off for the winter is retested when it goes back on. Source.
Our Virginia Class A contractor license, 2705192276, is on the side of the van.
Choosing a tester
Questions to ask anybody who offers to test it, us included.
The Purcellville report wants the device’s maker, serial number, size and location, the line pressure, and each test or repair signed with a certified tester number. Look it over before the tester leaves; a blank line is a reason for the Town to send it back.
Since January 1, 2023, Virginia only accepts tests from a DPOR-certified Backflow Prevention Device Worker, and some places keep a list of their own on top. Ask to see the certificate before the gauge goes on.
Some utilities take it from the tester and some want it from you. Ask which, and keep a copy either way, so you can show the date if a second notice turns up.
Ask for the reason and a written price before anything gets taken apart, and whether the retest is part of it. A failed device runs on a deadline, so a tester who can also fix it saves you a second trip.
Two of our crew going over a work order before the day's calls.
From our Google reviews
5.0 stars across 1,130 reviews. Read them on our reviews page.
Tyson was wonderful; professional, very knowledgeable, thorough and fast. He was great at telling me about what was needed, and I very much appreciated that. For the next plumbing problem we have, I will have SwiftPro on speed dial.
Where we work
Next door to Purcellville: Middleburg, Leesburg, Aldie and Ashburn.
Questions
The Town mails its form to every water user it considers at high or moderate risk, and sprinklers are only one item. A pool fill, a boiler feed, a yard hydrant or fire sprinklers can put an address on the list, and so can a system a past owner put in. Look around the foundation and the basement for a device first, then call the Town if you can’t find one.
The Town’s brochure says most devices need an overhaul about every five years, when the rubber parts inside are replaced, and more if a test fails. A device that can’t be tested gets replaced at least every five years. The next report should list any repair since the last one, so keep the receipt.
SwiftPro does, all over Purcellville. We test the backflow preventer on your sprinkler system, fire line or pool in about 30 minutes, repair it on the same visit if it fails, and get the report where your water utility wants it. Call (703) 997-9757 or book online.
The yearly test is $250 a home, normally $300, and you can pay for it online. HOA and condo units booked together on one visit run $175 to $225 a unit. A new preventer, installed and tested, is $800 to $1,200. Where an HOA unit or a new preventer lands in its range is set at the house and quoted before we start, and a device that fails is quoted in writing before any repair. More in what a backflow test costs.
About 30 minutes a device. The water is off for a few of those minutes while the gauge readings are taken.
Ready when you are
Call, or send the form at the top. Have the notice handy: how many devices it lists and the date on it are what we need. Or pay $250 online and we’ll call to pick the day.
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
SwiftPro Heating, Cooling & Plumbing is a licensed, BBB Accredited (A rating), independently owned heating, cooling and plumbing company in Chantilly, serving Purcellville and the rest of Northern Virginia. Virginia contractor license #2705192276. 5.0 stars across 1,130 reviews on Google, Angi, Yelp, the BBB and Facebook. SwiftPro maintains a dedicated HVAC team and a dedicated plumbing team.
From SwiftPro Heating, Cooling & Plumbing in Chantilly. Housing figures are the Census Bureau’s American Community Survey, 2020 to 2024, for each place named; permit, water and sewer facts link to each office’s own page and were checked in September and October 2026.