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Backflow Testing Services in Reston, Virginia

Finding a reliable backflow testing professional in Reston, Virginia is essential for maintaining a safe water supply and staying in compliance with local regulations. Our directory lists 23 backflow testing companies serving Reston and surrounding communities including Oak Hill, Sterling, Oakton.

Whether you need annual backflow testing, RPZ (Reduced Pressure Zone) valve inspection, or cross-connection control services, the providers listed below offer professional testing services for both residential and commercial properties throughout the Reston area.

Most water authorities in Virginia require annual testing and reporting for all backflow prevention assemblies. A certified backflow tester will inspect your devices, perform the required differential pressure tests, and file compliance reports with your local water authority.

Browse the listings below to compare ratings, read customer reviews, and contact backflow testing professionals near Reston directly. Use the filters above to narrow results by rating, review count, or specific services like RPZ testing and preventer installation.

Data source: Google Maps. Always verify licensing with your local water authority.

23 listed providers

Services:
ABCO Plumbing Company LLC backflow testing
Testing Verified
6 mi

ABCO Plumbing Company LLC

4.9(37)

Testing Verified · Vienna, VA · 6 mi

Backflow TestingEmergency Service
Website
Backflow Technology, LLC backflow testing
Testing Verified
8 mi

Backflow Technology, LLC

5.0(6)

Testing Verified · Ashburn, VA · 8 mi

Cross-Connection ControlEmergency Service
Website
HC
Testing Verified
8 mi

Hydro-Tech, Co.

4.5(217)

Testing Verified · Sterling, VA · 8 mi

Backflow TestingSprinkler BackflowCommercial

Our experience with Hydrotech was one of the best relationships we have had in our recent large-scale landscaping project. We had a challenging, low-output well system that required real…

Read more on Google
Website
BG Outdoor Services backflow testing
Testing Verified
9 mi

BG Outdoor Services

4.5(177)

Testing Verified · Sterling, VA · 9 mi

Backflow TestingAnnual Certification FilingSprinkler Backflow
Website
Roto-Rooter Plumbing & Water Cleanup backflow testing
9 mi

Roto-Rooter Plumbing & Water Cleanup

4.9(1,121)

McLean, VA · 9 mi

CommercialResidentialEmergency Service
Website
Pioneer Plumbers backflow testing
Testing Verified
10 mi

Pioneer Plumbers

5.0(96)

Testing Verified · Fairfax, VA · 10 mi

Backflow TestingPreventer RepairEmergency Service
Website
Baumbach Plumbing & Remodeling services llc backflow testing
Testing Verified
12 mi

Baumbach Plumbing & Remodeling services llc

4.9(113)

Testing Verified · Fairfax Station, VA · 12 mi

Backflow TestingResidentialEmergency Service

This company lives up to the high rating on Google. Around 9pm I had a busted pipe in my basement, no hot water. A quick Google search later, I chose to call Baumbach’s based on the reviews. Andy…

Read more on Google
Website
Back Flow Services Done Right backflow testing
Testing Verified
12 mi

Back Flow Services Done Right

5.0(12)

Testing Verified · FX STATION, VA · 12 mi

Backflow Testing

Andy handled our backflow repairs fast! He communicated every step of the repair and was a true professional. If you are looking for a plumbing contractor that takes pride in his work this is the…

Read more on Google
Website
Cherry Blossom Plumbing backflow testing
13 mi

Cherry Blossom Plumbing

4.9(463)

Arlington, VA · 13 mi

Emergency Service
Website
Roto-Rooter Plumbing & Water Cleanup backflow testing
13 mi

Roto-Rooter Plumbing & Water Cleanup

4.9(574)

Arlington, VA · 13 mi

CommercialResidentialEmergency Service
Website
Fairfax Plumbing NV Inc. backflow testing
13 mi

Fairfax Plumbing NV Inc.

5.0(69)

Annandale, VA · 13 mi

CommercialResidentialEmergency Service
Website
Capitol Boiler Works, LLC backflow testing
13 mi

Capitol Boiler Works, LLC

3.7(29)

Springfield, VA · 13 mi

Emergency Service
Website
Roto-Rooter Plumbing & Water Cleanup backflow testing
13 mi

Roto-Rooter Plumbing & Water Cleanup

4.8(1,503)

Springfield, VA · 13 mi

CommercialResidentialEmergency Service
Website
M.E. Flow backflow testing
Testing Verified
14 mi

M.E. Flow

4.8(3,739)

Testing Verified · Leesburg, VA · 14 mi

Backflow TestingCommercialEmergency Service
Website
John C. Flood backflow testing
15 mi

John C. Flood

4.8(4,998)

Alexandria, VA · 15 mi

Preventer Installation

I came home to a flooded basement and a leaking water heater. I called John C Flood and they sent Nassim S. I immediately felt at ease with him! He was super knowledgeable and took something that was…

Read more on Google
Website
Sertec LLC backflow testing
Testing Verified
16 mi

Sertec LLC

3.1(18)

Testing Verified · Alexandria, VA · 16 mi

Backflow TestingEmergency ServiceSame Day Service
Website
The Gentleman Plumber backflow testing
17 mi

The Gentleman Plumber

4.9(103)

Alexandria, VA · 17 mi

CommercialEmergency Service
Website
O'Neill Plumbing Services L.L.C. backflow testing
17 mi

O'Neill Plumbing Services L.L.C.

4.7(258)

Alexandria, VA · 17 mi

CommercialEmergency ServiceFree Estimates
Website
Ferguson Plumbing Supply backflow testing
18 mi

Ferguson Plumbing Supply

4.0(41)

Alexandria, VA · 18 mi

It’s the little things…… I called in search of a small o-ring and was the attendant wasn’t certain they had what I needed but encouraged me to come down and show them the part I was looking for. I…

Read more on Google
Website
Alexandria Plumbing Pro Services backflow testing
18 mi

Alexandria Plumbing Pro Services

4.4(65)

Alexandria, VA · 18 mi

Preventer InstallationPreventer RepairCommercial
Website
F.H. Furr Plumbing, Heating, Air Conditioning & Electrical backflow testing
19 mi

F.H. Furr Plumbing, Heating, Air Conditioning & Electrical

4.7(4,533)

Lorton, VA · 19 mi

Same Day Service
Website
M.E. Flow backflow testing
Testing Verified
19 mi

M.E. Flow

4.7(1,169)

Testing Verified · Lorton, VA · 19 mi

Backflow TestingCommercialEmergency Service
Website
Emerald Plumbing Co. backflow testing
20 mi

Emerald Plumbing Co.

4.8(167)

Alexandria, VA · 20 mi

Emergency Service

Five-Star Review for Somerville and Their Inside Sales Manager Andy I have been working with Somerville for close to twenty years and I can say without hesitation that Andy is the heart and soul of…

Read more on Google
Website

Frequently Asked Questions About Backflow Testing in Reston

Most jurisdictions in Virginia require backflow testers to hold a current certification from an approved training program, typically involving classroom instruction, a hands-on practical exam, and continuing education credits. Some municipalities maintain their own approved-tester lists. Always verify certification before hiring.

Residential tests typically involve a single PVB or DCVA device and are quicker to complete. Commercial properties in Reston often have multiple assemblies, RPZ devices, and fire-line backflow preventers that require more time and specialized equipment. Pricing and scheduling may differ for each type.

Many certified backflow testers in Reston will file test reports directly with your local water authority or municipality on your behalf. Confirm this with your provider before scheduling. Some jurisdictions require the property owner to submit reports, while others accept direct submissions from the tester.

Backflow testing in Reston, Virginia typically costs between $50 and $200 per device, depending on the type of backflow preventer and the complexity of the installation. RPZ assemblies generally cost more to test than double check valve assemblies. Contact providers listed above for current pricing in the Reston area.

If a backflow preventer fails its annual test, the certified tester will diagnose the issue — often a worn check valve, damaged disc, or fouled relief valve. Most testers in Reston can repair the device on site and re-test it the same day. Your water authority may require the passing report within a set deadline.

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