About this list
One page with every tester from the City of Columbus and Del-Co Water lists, so you don’t have to read a PDF in random order. Nobody pays to be here.
Sources and dates
| Source | Date on the source |
|---|---|
| City of Columbus, approved testers, all devices | Created Oct 16 2026, valid through Oct 30 2026 |
| City of Columbus, approved testers, irrigation systems | Oct 16 2026 |
| City of Columbus, tester credentials (cert expiry dates) | Oct 16 2026 |
| Del-Co Water, active backflow testers | Updated Jun 26 2026 |
| Testers’ own websites (prices) | Read Oct 29 2026 |
The City’s list header says it’s updated weekly; its Consumer’s Page says typically every two weeks. We copy it when it changes. The Ohio Department of Commerce license lookup couldn’t be reached for this build, so cert dates come from the City’s credential list only.
Order and placement
The City lists testers in random order “to minimize preferential selection.” We list them A to Z. There are no ads, sponsored rows or paid rankings, and no reviews, because we have no honest way to collect them. If that ever changes, a paid spot would be labeled “Sponsored” and kept out of the main list.
How companies are combined
One person can appear under slightly different company names across lists. We combine entries that share a phone number or street address. Four combinations rest mainly on a shared phone, and the lists don’t clearly show whether they are one business or two, so we left them combined and show both names on the page:
- Capital City Mechanical, Inc / FirstCall Mechanical (both Grove City)
- Holy Water Fire Protection Co. / Rogers Fire Protection Company (different addresses: Columbus and Centerburg)
- Heeter Plumbing LLC / an entry under the name “John Nugent” (same Dayton address)
- Certasite LLC / Fire Systems Pro
Sewell Backflow Testing / Sewell Irrigation share a phone and a PO box too. If you know any of these are separate businesses, tell us.
Errors in the source lists we worked around
We don’t change the City’s data, but we read past these mistakes in the PDFs. Names cut off in the source are shown as printed.
- 'Capital Fire Protection Company' has street address in City field: '3360 Valleyview Dr'
- 'EMP Services LLC' state written as 'Ohio'
- 'GEM Industrial Inc.' state written as 'Ohio'
- 'Phillips Plumbing Services LLC' (Phillips) bad/missing phone ''
- 'Roto Rooter Services' state written as 'Ohi'
- 'Roto Rooter' (Nieradka) bad/missing phone '503-7106 X2'
- 'West Plumbing & Rooter Service' (West) missing ZIP
- 'Custom Touch Irrigation Inc' state written as 'Indian'
- 'Niemann Consulting LLC' (Niemann) bad/missing phone ''
- name truncated/garbled in source: 'Columbus Backflow Testing Company &'
- name truncated/garbled in source: 'Conserva Irrigation (formerly AK Irrigation7'
- name truncated/garbled in source: 'Emergency Plumbing Service LLC/Backfl'
- name truncated/garbled in source: 'Emergency Plumbing Service LLC/Backflo3'
- name truncated/garbled in source: 'Silco Fire & Security (Silco Fire Protection2'cred: Dan Bebb (S A Comunale) DOC cert expiry 2026-10-17 — expired since the 10/16 list was created, still on the list valid through 10/30
- Note: list is described as 'updated weekly' in PDF header but 'typically biweekly' on Consumer's Page
Corrections
Email [email protected]. For the official list, contact the City’s Backflow Compliance Office, 614-645-6674.