BackflowNear Test-Due Reminder

Approved backflow testers in Sterling, VA

46 backflow testing businesses work within 25 miles of Sterling, 4 of them based in town. 6 have testers on Virginia's roster and 40 are on the approved tester list of 5 water utilities.

46 businesses within 25 miles

Backflow testing companies near Sterling

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 Sterling? One sponsor per county, clearly labelled. Sponsor this county

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 · 1 mi from Sterling

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

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 · 5 mi from Sterling

Call (703) 450-5898 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 · 16 mi from Sterling

Call (703) 479-2638 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 · 16 mi from Sterling

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

HMS Plumbing LLC

90/100
✓ VA Utility-Approved Tester Verified ★ 4.1 (21 reviews) On City of Rockville list Backflow Testing

10319 Piper Ln, Bristow, VA 20136 · 18 mi from Sterling

Call (703) 583-8205 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 Sterling

Call (240) 207-1212 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 · 19 mi from Sterling

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 · 19 mi from Sterling

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

Acker & Sons, Inc

90/100
✓ MD Utility-Approved Tester Verified ★ 4.6 (65 reviews) On DC Water listOn WSSC Water listOn Anne Arundel County listOn City of Rockville list Backflow Testing

10516 Summit Ave, Kensington, MD 20895 · 19 mi from Sterling

Call (301) 897-0700 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 · 20 mi from Sterling

Call (301) 867-7632 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 · 20 mi from Sterling

Call (301) 461-0622 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 · 20 mi from Sterling

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

Price reports

What a backflow test costs in Sterling

Not enough reports yet for Sterling 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.

Metro guide: Backflow testing in Washington, DC: every utility's rules, filing portals and published prices in one place.

Independent certified testers based in Sterling

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

TownTesterCertificateExpires
Sterling Christopher Barragan 059769 Sep 2028
Christopher C Campbell 059945 Jun 2028
Guillermo E Carcamo 060332 Aug 2027
Eric L Dejonghe 035266 Aug 2027
Terry W Dix 033701 Sep 2027
Daniel S Dobrai 058835 Feb 2027
Brian L Gepford 059455 Mar 2027
Dylan P Gepford 059610 Jun 2027
Douglas W Hart 006341 Sep 2027
Akbar Jalali 059778 Apr 2027
Donald F Mccallin 060075 Jan 2027
Yony E Chicas Medrano 059432 Jan 2028
Paul J Morton 060521 Oct 2028
James P Philbin 047088 Oct 2027
Esteban M Rivera 059252 Feb 2027
Bryan H Wacker SR 059481 Mar 2027
Nickolas J Stoll 059672 Oct 2027
Wint Z Thein 057602 Sep 2027
David J Wildnauer 058868 Jul 2027

Never miss your annual backflow test

Most water utilities require the backflow assembly on an irrigation, fire or commercial line to be tested every year, and a missed test can mean a shutoff notice. Tell us when yours was last tested in Sterling and we'll text you a month before it is due, with certified local testers ready to book.

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Backflow testing questions in Sterling

Where are the backflow testing businesses listed for Sterling based?

46 backflow testing businesses are listed within 25 miles of Sterling. 4 are based in Sterling itself, 4 more within 15 miles and 38 further out, up to 25 miles away. Other towns with more than one listing: Gaithersburg (11), Rockville (7) and Washington (3). The closest is Commercial Express HVAC, under 1 mile from Sterling.

Which tester lists are the businesses near Sterling on?

6 have testers on Virginia's roster and 40 are on the approved tester list of 5 water utilities. 19 certified testers appear on the roster in Sterling without a company; they are in the table on this page.

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

44 of the 46 listed for Sterling 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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