Backflow Testing Services in Jefferson, Virginia
Finding a reliable backflow testing professional in Jefferson, Virginia is essential for maintaining a safe water supply and staying in compliance with local regulations. Our directory lists 25 backflow testing companies serving Jefferson and surrounding communities including Annandale, Arlington, McLean.
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 Jefferson 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 Jefferson 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.
25 listed providers
Roto-Rooter Plumbing & Water Cleanup
Arlington, VA · 4 mi
Roto-Rooter Plumbing & Water Cleanup
Springfield, VA · 4 mi

John C. Flood
Alexandria, VA · 5 mi
“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 GoogleRoto-Rooter Plumbing & Water Cleanup
McLean, VA · 5 mi

Pioneer Plumbers
Testing Verified · Fairfax, VA · 5 mi

ABCO Plumbing Company LLC
Testing Verified · Vienna, VA · 5 mi
Sertec LLC
Testing Verified · Alexandria, VA · 6 mi
O'Neill Plumbing Services L.L.C.
Alexandria, VA · 6 mi

Alexandria Plumbing Pro Services
Alexandria, VA · 7 mi
Ferguson Plumbing Supply
Alexandria, VA · 8 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…”
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Emerald Plumbing Co.
Alexandria, VA · 9 mi
“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…”
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F.H. Furr Plumbing, Heating, Air Conditioning & Electrical
Lorton, VA · 10 mi

Back Flow Services Done Right
Testing Verified · FX STATION, VA · 10 mi
“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…”
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Baumbach Plumbing & Remodeling services llc
Testing Verified · Fairfax Station, VA · 10 mi
“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 GoogleRoto-Rooter Plumbing & Water Cleanup
Alexandria, VA · 10 mi
“Delighted with the quick response to our sewer line blockage, they got a technician out to us within an hour of my call. The service include running the cutter snake as well as a camera afterwards so…”
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DB's Plumbing and Drain®
Testing Verified · Woodbridge, VA · 16 mi
Hydro-Tech, Co.
Testing Verified · Sterling, VA · 18 mi
“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 GoogleBG Outdoor Services
Testing Verified · Sterling, VA · 18 mi
Backflow Technology, LLC
Testing Verified · Ashburn, VA · 19 mi
Helpful resources
Frequently Asked Questions About Backflow Testing in Jefferson
Cross-connection control prevents contaminated water from flowing backwards into the clean water supply. Backflow prevention devices are installed at cross-connection points to protect public health. Regular testing ensures these devices function properly. Many municipalities in Virginia require cross-connection control programs for commercial properties and irrigation systems.
Many municipalities in Virginia require annual backflow testing for commercial and residential properties with backflow prevention devices. Your local water authority in Jefferson can confirm the exact testing schedule and deadlines for your area. Failing to test on time may result in fines or water service interruption.
Some certified testers near Jefferson offer same-day or emergency scheduling for urgent situations such as a failed device, a compliance deadline, or a new construction inspection. Check individual provider listings above for availability, or request a quote to find a tester who can accommodate your schedule.
Look for testers with active state certification, strong Google reviews, and experience with your type of backflow preventer (PVB, DCVA, or RPZ). Ask whether they file compliance reports with your local water authority and request a written estimate before scheduling. Our directory lists testers near Jefferson with real customer reviews.
RPZ (Reduced Pressure Zone) testing verifies that your reduced pressure backflow preventer is functioning correctly to protect your water supply from contamination. A certified tester uses specialized gauges to measure differential pressures across the assembly. RPZ devices are typically required for high-hazard connections.
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