All West Plumbing
80/100 ✓ OR Certified Backflow Tester Verified #BAT-6479 ★ 4.1 (20 reviews) Backflow Testing
Verified Oct 2026 · Unclaimed listing
Backflow testing in Ontario, OR
2 backflow testing businesses work within 25 miles of Ontario, 2 of them based in town. Every one has testers on Oregon's certified backflow tester roster.
2 businesses within 25 miles
4 for-hire testers based in Ontario
Certified backflow testers near Ontario
Green Giant Lawn Care
80/100 ✓ OR Certified Backflow Tester Verified #BAT-5338 ★ 3.7 (15 reviews) Backflow Testing
Verified Oct 2026 · Unclaimed listing
Independent certified testers based in Ontario
Testers Oregon's roster lists without a company. Names, certificate numbers and phones as the state publishes them.
| Town | Tester | Certificate | Expires | Phone |
|---|---|---|---|---|
| Ontario | Ruben Hernandez Jr | BAT-661679 | Dec 2026 | (208) 405-9421 |
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 Ontario and we'll text you a month before it is due, with certified local testers ready to book.
Free. One text before your test is due. No spam, cancel anytime. Privacy
Backflow testing questions in Ontario
Who can test a backflow preventer in Ontario?
A tester certified by Oregon Health Authority. Your water utility may also keep its own list of testers allowed to file reports. Check the notice your utility sent.
How many certified backflow testers are based in Ontario?
4 testers who test for the public list Ontario as their base on Oregon's roster, and 2 testing businesses are within 25 miles.
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.
Roster: Oregon Health Authority, read October 6, 2026.
Approved list: EWEB backflow tester list, Eugene Water & Electric Board.
Approved list: Clackamas River Water public list of backflow testing companies, Clackamas River Water.
Approved list: City of Gresham backflow tester list, City of Gresham Environmental Services.