| Quick facts | Answer |
|---|---|
| Cost range | $50 to $200 per device |
| Time | Usually a short visit; ask the pro for a time estimate |
| Who's qualified | Commercial tests need an ASSE 5110 certified Backflow Prevention Assembly Tester |
Jenks, OK: what's different here
Jenks sits in Tulsa County, about 11 miles and roughly 15 minutes from Tulsa by main highway. The town straddles two IECC climate zones: northern Jenks is Zone 4A with a 24-inch frost depth, while southern Jenks is Zone 3A with an 18 to 20 inch frost depth. Winters bring short periods below zero, which is why outdoor backflow devices need winterization attention. Frost depth varies by location, so ask your tester about protection for your specific address.
How often does Jenks require backflow preventer inspection?
Annual testing is the standard for irrigation and commercial systems, and many areas require testing at least once per year. City of Tulsa guidance says a lawn irrigation system backflow preventer should be tested annually by a qualified professional. Jenks is in Tulsa County, so Tulsa's rules are the closest local benchmark.
Who can test a backflow preventer in Jenks?
Commercial backflow preventers must be tested by an ASSE 5110 certified Backflow Prevention Assembly Tester. Repairs must be done by an ASSE 5130 certified Backflow Prevention Assembly Repairer. The City of Tulsa also requires testing by a City of Tulsa-approved Back Flow Assembly Tester before acceptance.
When should Jenks homeowners schedule backflow testing?
Tulsa's average first fall frost is November 3 and the average last spring frost is March 29, giving about 218 days between 32-degree frost events. The mean first hard freeze is November 14 and the mean last is March 17. Schedule testing before freeze season so repairs happen while weather is mild.
Does Oklahoma ever allow inspections without a separate state inspection?
Yes, sometimes. A DEQ certified installer source states installers can perform an inspection and leave the site without a separate DEQ inspection. That applies to certified professionals, so verify credentials before hiring.
What to do next
- Schedule your annual backflow test before the November 14 average first hard freeze.
- Verify the tester's ASSE 5110 certification for testing, or ASSE 5130 for repairs.
- Confirm the tester is approved by the City of Tulsa before booking.
- Get a written quote covering the $50 to $200 per device range and any repair costs.
- Call (918) 202-2068 or email [email protected] for a free quote from a licensed, insured local backflow testers.
Tulsa Backflow is a free referral service: an independent contractor does the work and may pay us a referral fee. You never pay us anything.



