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Cornelius backflow testing

15 companies on City of Cornelius's tester list · company-level list (no tester count) · list version 2026 (PDF created 24 Sep 2026)

About this list

Utility
City of Cornelius
List title
“Certified Backflow Device Testers” (as printed)
Version
2026 (PDF created 24 Sep 2026)
Fetched
2026-11-04 (UTC)
Format
PDF
Testers
Company-level list (no tester count). Every entry on this list is a company.
The utility says
“This list of testers is provided for the customer’s convenience. This list is not intended to solicit service or recommend Backflow Device Testers.”

On City of Cornelius's approved list, version 2026 (PDF created 24 Sep 2026) · fetched 2026-11-04

Every company below is on this list; each card says “On this utility's approved list”. The list is the utility’s, not ours: we copy company names, addresses and phone numbers from it, sort them A to Z and do not rank or endorse anyone. Confirm with your utility before booking.

On the list as of2026 (PDF created 24 Sep 2026)

Certified Backflow Device Testers. Fetched 2026-11-04 (UTC).

Open the utility’s own list
The utility’s backflow program page
How we handle listings (correct or remove a listing)

Confirm with your utility before booking.

Companies on the list (15)

Alphabetical. Company-level list (no tester count): the utility lists companies, not individual testers.

Other utility lists in Oregon: Clackamas.

Guides: How much does a backflow test cost? Tester prices, plus what your utility adds, Failed backflow test: what failed, your repair deadline, and when to replace the device, What is a backflow test? What the tester measures, what passes, and what you have to do, Irrigation backflow testing: which device your sprinkler system needs, when it is tested, and how to winterize it.