Hawaii never sees a freeze at sea level, so backflow prevention in Hawaii is about corrosion and wear. Salt air and trade winds eat at brass bodies, bolts and test cocks on outdoor devices.

Water utilities on each island, under Hawaii Department of Health rules, track testable assemblies and send yearly notices. Resorts, condos and commercial kitchens carry many of the devices. Grizzly Backflow & Plumbing connects Hawaii property owners with certified testers for commercial backflow testing, backflow valve repair and backflow preventer replacement when corrosion has gone too far. Call (833) 990-5874.

Certified backflow testers working in and around Hawaii
RPZ, double check, PVB and fire line assemblies
Test reports filed with your water utility
A person on the phone at (833) 990-5874

(833) 990-5874

Why call us for backflow testing

Hawaii Owners Call Us for Backflow Testing

Hawaii backflow devices rarely freeze, but they corrode. Salt air seizes bolts and test cocks on outdoor devices near the coast. Grizzly Backflow & Plumbing connects Hawaii owners with testers who check the body and fittings as well as the readings.

Resorts and condos often have many assemblies on one property, and keeping every test date in line is the hard part. Reports go to the county water department after each test. Call (833) 990-5874 for commercial backflow testing, repair and backflow prevention in Hawaii.

Call (833) 990-5874

Certified testers

Testers whose certification your water utility accepts for Hawaii.

Report filing

Reports go in through the utility portal or on its own form.

Price first

You hear the price on the phone before the test is booked.

Readings, not guesses

Each check and relief valve gets an actual psid reading.

Repair on site

Rebuild kits for common brands, so many failed devices are fixed and retested in one visit.

Multi-device sites

Domestic, fire line and irrigation assemblies tested and tracked together.

Backflow testing FAQs

Questions about backflow testing

Common questions about backflow testing in Hawaii.

Talk to a person

What happens if I miss the backflow test deadline?

Utilities usually send a second notice, and after that some add a fee or schedule a service shutoff. Calling (833) 990-5874 before the deadline is the simplest way to avoid it.

What is the difference between an RPZ and a double check valve?

Both have two independent check valves. An RPZ adds a relief valve between the checks that discharges water to atmosphere if the checks leak, which is why it is required on high-hazard connections.

What does a failed backflow test mean?

A check valve or the relief valve did not hold its required pressure differential. The device needs repair or replacement, then a retest before a passing report can be filed.

Can a backflow preventer freeze?

Yes. Trapped water expands and can crack the bronze body or blow out the bonnet. Insulated enclosures, heat cable or draining the device for winter prevent it.

Who sends the test report to the water utility?

The tester usually files it, either on the utility's paper form or through its online portal. Ask for a copy for your own records.

Book a backflow test

Backflow Test Due in Hawaii? Call now.

Certified testers for backflow testing in Hawaii. Call (833) 990-5874 and we go through the device and the price before anything is booked.

(833) 990-5874

Phone · (833) 990-5874