BackflowNear Test-Due Reminder

Backflow testing in Delaware, OH

74 backflow testing businesses work within 25 miles of Delaware, 3 of them based in town. 6 have testers on Ohio's roster and 68 are on the approved tester list of City of Columbus and City of Columbus irrigation.

74 businesses within 25 miles

Backflow testing companies near Delaware

Amanda Plumbing

100/100
✓ OH Utility-Approved Tester Verified #A11680 ★ 4.8 (1219 reviews) 3 certified testersOn City of Columbus list Backflow Testing

4425 Columbus Pike, Delaware, OH 43015 · 2 mi from Delaware

Call (740) 369-5161 Details Website

Verified Oct 2026 · Unclaimed listing

Genesis Building Systems

100/100
✓ OH Utility-Approved Tester Verified #A10680 ★ 5 (3 reviews) 5 certified testersOn City of Columbus list Backflow Testing

7790 N Central Dr, Lewis Center, OH 43035 · 5 mi from Delaware

Call (614) 272-6868 Details Website

Verified Oct 2026 · Unclaimed listing

EPro Services

100/100
✓ OH Utility-Approved Tester Verified #A12122 ★ 4.6 (41 reviews) 3 certified testersOn City of Columbus list Backflow Testing

1491 Polaris Pkwy #217, Columbus, OH 43240 · 8 mi from Delaware

Call (614) 212-7739 Details Website

Verified Oct 2026 · Unclaimed listing

Siemens Industry

100/100
✓ OH Utility-Approved Tester Verified #A11962 ★ 3.6 (5 reviews) 2 certified testersOn City of Columbus list Backflow Testing

530 Lakeview Plaza Blvd # D, Worthington, OH 43085 · 9 mi from Delaware

Call (614) 846-9540 Details Website

Verified Oct 2026 · Unclaimed listing

Summit Fire & Security llc

100/100
✓ OH Utility-Approved Tester Verified #A12661 ★ 4.9 (150 reviews) 3 certified testersOn City of Columbus list Backflow Testing

771 Dearborn Park Ln Ste h, Columbus, OH 43085 · 9 mi from Delaware

Call (614) 471-9700 Details Website

Verified Oct 2026 · Unclaimed listing

Hard Fire Suppression Systems

100/100
✓ OH Utility-Approved Tester Verified #A13348 ★ 5 (5 reviews) 2 certified testersOn City of Columbus list Backflow Testing

400 E Wilson Bridge Rd A, Worthington, OH 43085 · 10 mi from Delaware

Call (614) 704-8676 Details Website

Verified Oct 2026 · Unclaimed listing

Absolute Irrigation LLC

100/100
✓ OH Utility-Approved Tester Verified #A13083 ★ 4.6 (19 reviews) 2 certified testersOn City of Columbus list Backflow Testing

6456 Linworth Rd, Worthington, OH 43085 · 10 mi from Delaware

Call (614) 893-1597 Details Website

Verified Oct 2026 · Unclaimed listing

Donovan Sprinkler LLC

90/100
✓ OH Utility-Approved Tester Verified #B13537 ★ 5 (3 reviews) On City of Columbus list Backflow Testing

6149 Liberty Rd N, Powell, OH 43065 · 2 mi from Delaware

Call (740) 881-9821 Details Website

Verified Oct 2026 · Unclaimed listing

Sewell Irrigation

90/100
✓ OH Utility-Approved Tester Verified #A5256 ★ 3.6 (26 reviews) On City of Columbus list Backflow Testing

3486 Bean-Oller Rd, Delaware, OH 43015 · 2 mi from Delaware

Call (740) 548-7924 Details Website

Verified Oct 2026 · Unclaimed listing

Suburban Irrigation Inc

90/100
✓ OH Certified Backflow Tester Verified #B10969 ★ 3.9 (7 reviews) On City of Columbus irrigation list Backflow Testing

195 W Olentangy St, Powell, OH 43065 · 5 mi from Delaware

Call (614) 889-8882 Details Website

Verified Oct 2026 · Unclaimed listing

JCORR Mechanical

90/100
✓ OH Utility-Approved Tester Verified #11426 On City of Columbus list Backflow Testing

9002 Cotter St, Lewis Center, OH 43035 · 6 mi from Delaware

Call (614) 880-4111 Details Website

Verified Oct 2026 · Unclaimed listing

Sauer Group Inc

100/100
✓ OH Utility-Approved Tester Verified #A13526 10 certified testersOn City of Columbus list Backflow Testing

1105 Schrock Rd Ste 700, Columbus, OH 43229 · 10 mi from Delaware

Call (614) 853-2500 Details Website

Verified Oct 2026 · Unclaimed listing

G Mechanical

100/100
✓ OH Utility-Approved Tester Verified #6570 ★ 3.4 (41 reviews) 2 certified testersOn City of Columbus list Backflow Testing

6480 Doubletree Ave, Columbus, OH 43229 · 11 mi from Delaware

Call (614) 844-6750 Details Website

Verified Oct 2026 · Unclaimed listing

Accurate Plumbing Inc

100/100
✓ OH Utility-Approved Tester Verified #A5434 ★ 4.8 (128 reviews) 2 certified testersOn City of Columbus list Backflow Testing

7595 Fishel Dr S, Dublin, OH 43016 · 11 mi from Delaware

Call (614) 526-0131 Details Website

Verified Oct 2026 · Unclaimed listing

Speer Mechanical

100/100
✓ OH Utility-Approved Tester Verified #A4907 ★ 3.4 (35 reviews) 12 certified testersOn City of Columbus list Backflow Testing

5255 Sinclair Rd, Columbus, OH 43229 · 12 mi from Delaware

Call (614) 261-6331 Details Website

Verified Oct 2026 · Unclaimed listing

D & L Plumbing Inc

100/100
✓ OH Utility-Approved Tester Verified #2007 ★ 4.3 (58 reviews) 4 certified testersOn City of Columbus list Backflow Testing

4736 E Walnut St, Westerville, OH 43081 · 14 mi from Delaware

Call (614) 882-8281 Details Website

Verified Oct 2026 · Unclaimed listing

VFP Fire Systems

100/100
✓ OH Utility-Approved Tester Verified #A10932B ★ 3.7 (7 reviews) 18 certified testersOn City of Columbus list Backflow Testing

2835 Charter St, Columbus, OH 43228 · 16 mi from Delaware

Call (614) 527-9855 Details Website

Verified Oct 2026 · Unclaimed listing

G&M Plumbing

100/100
✓ OH Utility-Approved Tester Verified #A11933 ★ 4.6 (11 reviews) 3 certified testersOn City of Columbus list Backflow Testing

2077 Joyce Ave, Columbus, OH 43219 · 17 mi from Delaware

Call (614) 263-1851 Details Website

Verified Oct 2026 · Unclaimed listing

Farber Corporation

100/100
✓ OH Utility-Approved Tester Verified #A3420B ★ 4 (13 reviews) 2 certified testersOn City of Columbus list Backflow Testing

800 E 12th Ave, Columbus, OH 43211 · 17 mi from Delaware

Call (614) 294-1626 Details Website

Verified Oct 2026 · Unclaimed listing

Geiger Brothers Inc

100/100
✓ OH Utility-Approved Tester Verified #A12459 ★ 3.2 (6 reviews) 4 certified testersOn City of Columbus list Backflow Testing

5211 Trabue Rd, Columbus, OH 43228 · 18 mi from Delaware

Call (614) 347-9200 Details Website

Verified Oct 2026 · Unclaimed listing

Elite Fire Services LLC

100/100
✓ OH Utility-Approved Tester Verified #A10647 ★ 5 (19 reviews) 4 certified testersOn City of Columbus list Backflow Testing

3025 Switzer Rd, Columbus, OH 43219 · 18 mi from Delaware

Call (614) 586-4255 Details Website

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 Delaware 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 Delaware

Who can test a backflow preventer in Delaware?

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

How many backflow testing companies serve Delaware?

74 companies on the approved list of City of Columbus and City of Columbus irrigation work within 25 miles of Delaware, 3 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: City of Columbus approved backflow testers, City of Columbus.

Approved list: City of Columbus approved backflow testers (irrigation devices), City of Columbus.

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