BackflowNear Test-Due Reminder

Approved backflow testers in Ashburn, VA

45 backflow testing businesses work within 25 miles of Ashburn, 2 of them based in town. 6 have testers on Virginia's roster and 39 are on the approved tester list of 5 water utilities.

45 businesses within 25 miles

Backflow testing companies near Ashburn

What the badges mean
✓ VA Certified Backflow Tester Verified
A state roster lists at least one certified tester at this business, with a current certificate. The state sets the exam and renewal.
✓ VA Utility-Approved Tester Verified On the city list
The company is on a water utility's own approved list (the second badge names the list). That is the utility's approval, not a state license, and it counts for that utility.
3 certified testers
How many certified testers the roster lists at this business.
★ 4.8 (25 reviews)
The Google rating, shown as Google reports it. It does not change the order.

Order is by our quality score, never by payment. How we verify listings.

Are you a backflow testing company near Ashburn? One sponsor per county, clearly labelled. Sponsor this county

Backflow Technology, LLC

90/100
✓ VA Utility-Approved Tester Verified ★ 4.8 (8 reviews) On DC Water listOn City of Rockville listOn Loudoun Water list Backflow Testing

20700 Loudoun County Pkwy #192, Ashburn, VA 20147 · under 1 mile from Ashburn

Call (703) 450-5898 Details Website
Verified Oct 2026 · Unclaimed listing

Wacker Plumbing

90/100
✓ VA Utility-Approved Tester Verified ★ 4.8 (138 reviews) On Loudoun Water list Backflow Testing

22580 Glenn Dr #13, Sterling, VA 20164 · 3 mi from Ashburn

Call (703) 450-5565 Details Website
Verified Oct 2026 · Unclaimed listing

O'Conor Plumbing Services, LLC

90/100
✓ MD Utility-Approved Tester Verified ★ 4.5 (231 reviews) On DC Water listOn WSSC Water listOn Anne Arundel County listOn City of Rockville list Backflow Testing

19301 Mateny Hill Rd, Germantown, MD 20874 · 14 mi from Ashburn

Call (301) 540-5050 Details Website
Verified Oct 2026 · Unclaimed listing

Ben Lewis Plumbing

90/100
✓ MD Utility-Approved Tester Verified ★ 2.6 (38 reviews) On Anne Arundel County list Backflow Testing

23407 Frederick Rd, Clarksburg, MD 20871 · 17 mi from Ashburn

Call (301) 428-3900 Details Website
Verified Oct 2026 · Unclaimed listing

MPM Plumbing

90/100
✓ MD Utility-Approved Tester Verified ★ 5 (9 reviews) On City of Rockville list Backflow Testing

5 Mineral Springs Ct, Gaithersburg, MD 20877 · 18 mi from Ashburn

Call (301) 208-8362 Details Website
Verified Oct 2026 · Unclaimed listing

James A Wheat & Sons

90/100
✓ MD Utility-Approved Tester Verified ★ 4.8 (1300 reviews) On DC Water listOn WSSC Water listOn City of Rockville list Backflow Testing

7834 Beechcraft Ave, Gaithersburg, MD 20879 · 18 mi from Ashburn

Call (301) 670-1944 Details Website
Verified Oct 2026 · Unclaimed listing

The Drain Guys

90/100
✓ MD Utility-Approved Tester Verified ★ 4.7 (186 reviews) On City of Rockville list Backflow Testing

8041 Cessna Ave Ste 100, Gaithersburg, MD 20879 · 18 mi from Ashburn

Call (301) 867-7632 Details Website
Verified Oct 2026 · Unclaimed listing

Sky Plumbing

90/100
✓ MD Utility-Approved Tester Verified ★ 4.9 (177 reviews) On DC Water list Backflow Testing

12342 Wilkins Ave, Rockville, MD 20852 · 18 mi from Ashburn

Call (240) 207-1212 Details Website
Verified Oct 2026 · Unclaimed listing

Harvey W. Hottel

90/100
✓ MD Utility-Approved Tester Verified ★ 4.1 (48 reviews) On DC Water list Backflow Testing

18900 Woodfield Rd, Gaithersburg, MD 20879 · 18 mi from Ashburn

Call (301) 461-0622 Details Website
Verified Oct 2026 · Unclaimed listing

Mallick Plumbing & Heating, Inc

90/100
✓ MD Utility-Approved Tester Verified ★ 4.9 (2436 reviews) On DC Water listOn WSSC Water listOn City of Rockville list Backflow Testing

7620 Rickenbacker Dr Ste L, Gaithersburg, MD 20879 · 19 mi from Ashburn

Call (301) 840-5861 Details Website
Verified Oct 2026 · Unclaimed listing

KT Irrigation, LLC

90/100
✓ VA Utility-Approved Tester Verified ★ 2.9 (19 reviews) On Loudoun Water list Backflow Testing

8040 Industrial Park Ct, Bristow, VA 20136 · 19 mi from Ashburn

Call (703) 479-2638 Details Website
Verified Oct 2026 · Unclaimed listing

Robert A. Tull, Inc.

80/100
✓ MD Certified Backflow Tester Verified ★ 2.8 (31 reviews) On WSSC Water listOn City of Rockville list Backflow Testing

7820 Airpark Rd, Gaithersburg, MD 20879 · 18 mi from Ashburn

Call (301) 948-2490 Details
Verified Oct 2026 · Unclaimed listing

Price reports

What a backflow test costs in Ashburn

Not enough reports yet for Ashburn to show a range. Be one of the first: it takes a minute and stays anonymous.

Published prices nationwide

$29.99 to $100 per assembly

Based on 14 published prices · Read Oct 2026 Prices testing businesses list on their own websites, from our cost guide. Listed prices, not what people paid.

Every published price, with its source: what a backflow test costs.

Failed test? Published repair, rebuild and replacement prices: what a backflow repair or replacement costs.

Had your backflow test done? Share what you paid to see local prices.

Independent certified testers based in Ashburn

Testers the Virginia Department of Professional and Occupational Regulation certifies, based in Ashburn. Its list gives no company or phone, and does not say who tests for the public.

TownTesterCertificateExpires
Ashburn Brandon V Burriss 057553 Apr 2028
Alvaro L Rivas Gomez 059511 May 2027
Michael A Hall 051223 May 2027
Selwyn D Richardson JR 060068 Jun 2027
Philip S Barbe JR 034724 Jul 2027
Jeffrey S Jackman 060085 Dec 2026
Miguelangel Martinez 060045 Nov 2026
Randall R Hunn SR 058806 Dec 2026
James J Zingales 058634 Dec 2027

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Backflow testing questions in Ashburn

Where are the backflow testing businesses listed for Ashburn based?

45 backflow testing businesses are listed within 25 miles of Ashburn. 2 are based in Ashburn itself, 7 more within 15 miles and 36 further out, up to 25 miles away. Other towns with more than one listing: Gaithersburg (11), Rockville (7) and Sterling (4). The closest is Backflow Technology, LLC, under 1 mile from Ashburn.

Which tester lists are the businesses near Ashburn on?

6 have testers on Virginia's roster and 39 are on the approved tester list of 5 water utilities. 9 certified testers appear on the roster in Ashburn without a company; they are in the table on this page.

How many of the backflow testing businesses near Ashburn have Google reviews?

42 of the 45 listed for Ashburn have 3 or more Google reviews. Mallick Plumbing & Heating, Inc has the most reviews, 2,436, with an average of 4.9 stars, as Google showed them at our last check.

Approved list: City of Norfolk backflow device testers list, City of Norfolk Department of Utilities.

Approved list: Loudoun Water backflow tester list (DPOR certified), Loudoun Water.

Approved list: BRWA certified backflow testers list, Bedford Regional Water Authority.

Approved list: Backflow Prevention Assembly Service Providers, DC Water.

Approved list: City of Rockville certified backflow prevention testers, City of Rockville Department of Public Works.

Approved list: Kingsport Water Services backflow contractor list, City of Kingsport Water Services.

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