BackflowNear Test-Due Reminder

Backflow testing in Alexandria, VA

35 backflow testing businesses work within 25 miles of Alexandria, 2 of them based in town. Every one is on the approved tester list of DC Water.

35 businesses within 25 miles

Backflow testing companies near Alexandria

A&E Plumbing Inc

90/100
✓ VA Utility-Approved Tester Verified ★ 4.3 (6 reviews) On DC Water list Backflow Testing

7069 Gateway Ct, Manassas, VA 20109 · 8 mi from Alexandria

Call (703) 420-8260 Details Website

Verified Oct 2026 · Unclaimed listing

R&R Mechanical, LLC

90/100
✓ DC Utility-Approved Tester Verified ★ 3.8 (12 reviews) On DC Water list Backflow Testing

2902 Bladensburg Rd NE, Washington, DC 20018 · 13 mi from Alexandria

Call (202) 636-9451 Details Website

Verified Oct 2026 · Unclaimed listing

Durance Plumbing

90/100
✓ MD Utility-Approved Tester Verified ★ 4.8 (73 reviews) On DC Water list Backflow Testing

7304 Carroll Ave #149, Takoma Park, MD 20912 · 14 mi from Alexandria

Call (301) 270-6663 Details Website

Verified Oct 2026 · Unclaimed listing

Thomas E Clark Inc

90/100
✓ MD Utility-Approved Tester Verified ★ 4.8 (339 reviews) On DC Water list Backflow Testing

2412 Linden Ln, Silver Spring, MD 20910 · 15 mi from Alexandria

Call (301) 608-0550 Details Website

Verified Oct 2026 · Unclaimed listing

Acker & Sons, Inc

90/100
✓ MD Utility-Approved Tester Verified ★ 4.6 (65 reviews) On DC Water list Backflow Testing

10516 Summit Ave, Kensington, MD 20895 · 16 mi from Alexandria

Call (301) 897-0700 Details Website

Verified Oct 2026 · Unclaimed listing

Free Line Plumbing

90/100
✓ MD Utility-Approved Tester Verified ★ 4.9 (170 reviews) On DC Water list Backflow Testing

9244 E Hampton Dr #607, Capitol Heights, MD 20743 · 17 mi from Alexandria

Call (301) 499-0987 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 Alexandria

Call (240) 207-1212 Details Website

Verified Oct 2026 · Unclaimed listing

ADJ Sheetmetal Inc

90/100
✓ MD Utility-Approved Tester Verified ★ 3.6 (19 reviews) On DC Water list Backflow Testing

4510 Graphics Dr, White Plains, MD 20695 · 18 mi from Alexandria

Call (301) 283-3000 Details Website

Verified Oct 2026 · Unclaimed listing

H&D Mechanical LLC

90/100
✓ MD Utility-Approved Tester Verified ★ 4.2 (5 reviews) On DC Water list Backflow Testing

7703 Crain Hwy, Upper Marlboro, MD 20772 · 18 mi from Alexandria

Call (443) 949-9842 Details Website

Verified Oct 2026 · Unclaimed listing

CRW Mechanical

90/100
✓ MD Utility-Approved Tester Verified ★ 3.9 (7 reviews) On DC Water list Backflow Testing

5807 Ellerbie St, Lanham, MD 20706 · 20 mi from Alexandria

Call (301) 918-0056 Details Website

Verified Oct 2026 · Unclaimed listing

J&J Plumbing and Heating

80/100
✓ MD Utility-Approved Tester Verified ★ 5 (4 reviews) On DC Water list Backflow Testing

8326 26th Ave, Adelphi, MD 20783 · 16 mi from Alexandria

Call (301) 343-5390 Details

Verified Oct 2026 · Unclaimed listing

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 Alexandria 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 Alexandria

Who can test a backflow preventer in Alexandria?

A tester certified as Virginia's rules require, and accepted by your water utility. The companies here are on the approved list of DC Water: companies allowed to file backflow test reports in that system. Check the notice your utility sent.

How many backflow testing companies serve Alexandria?

35 companies on the approved list of DC Water work within 25 miles of Alexandria, 2 of them based in town.

How often do I need a backflow test?

Most utilities require a test when the assembly is installed and then every year. Your utility's notice gives the due date and how the tester files the report.

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

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