| Quick facts | Answer |
|---|---|
| Cost range | $60-$145 typical; $50 small drain-only, $250 large blowout |
| Time | A pro's visit is quick; DIY takes about 1 to 2 hours |
| Who's qualified | ASSE 5110 certified tester or City of Tulsa-approved Back Flow Assembly Tester |
Owasso, OK: what's different here
Owasso sits in Tulsa County, about 14 miles and roughly 19 minutes north of Tulsa via US-169. That proximity means many Owasso properties fall under Tulsa-area backflow rules. The local climate brings a mean first 28°F hard freeze around November 14, so irrigation systems and backflow assemblies need protection before then.
When should Owasso homeowners schedule backflow preventer winterization?
The Owasso area averages its first 28°F hard freeze around November 14 and the first 32°F frost around November 3. The mean last hard freeze is March 17, with about 241 days between hard freezes. Book winterization in late October or early November, before the freeze window opens.
What does backflow preventer winterization cost in Owasso?
Professional sprinkler winterization typically costs about $60 to $145. A small drain-only job runs about $50, while a large blowout can reach about $250. Ask the pro for a quote that spells out which method they will use.
Who can test and repair a backflow preventer in Owasso?
Oklahoma industry guidance lists an ASSE 5110 certified Backflow Prevention Assembly Tester for testing and an ASSE 5130 certified Repairer for repairs. The City of Tulsa also requires assemblies to be tested by a City-approved Back Flow Assembly Tester. Ask any pro for proof of certification and insurance before hiring.
Is annual testing required for irrigation backflow devices?
Yes. Oklahoma law requires annual testing and certification of backflow prevention devices, and City of Tulsa guidance says lawn irrigation backflow preventers should be tested annually by a qualified professional. Owasso is in Tulsa County, so Tulsa-area water rules often apply.
What freeze protection does a backflow assembly need?
Irrigation assemblies sit above ground and hold trapped water that can crack in a freeze. Winterization typically means shutting off the irrigation supply and draining or blowing out the line. Tulsa city specs also note a double check detector assembly must be rated for a minimum 150 psi working pressure.
What to do next
- Schedule winterization before November 3, the mean first 32°F frost in the Tulsa area.
- Ask the pro to show an ASSE 5110 tester certification or City of Tulsa approval before work begins.
- Get a written quote stating whether the job is drain-only (about $50) or a full blowout (up to about $250).
- Book the annual backflow test at the same visit, since Oklahoma law requires yearly testing.
- 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.
