Backflow Testing & Repair on O'ahu
Backflow preventers protect your drinking water from contamination. The Honolulu Board of Water Supply requires annual testing — Alpha Omega provides certified testing, repairs, and new installations to keep you compliant and your water safe.
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What We Do
Our Backflow Prevention Services
Everything you need to stay compliant and protect your water supply.
Annual Backflow Testing
The Honolulu Board of Water Supply requires annual testing for most backflow prevention devices. We perform certified tests and submit results directly to BWS on your behalf.
Backflow Preventer Repair
Failed test? We diagnose the failing component — check valve, relief valve, or assembly — and repair it to restore compliance and proper operation.
New Backflow Preventer Installation
New irrigation system, commercial property, or building requiring a device? We install approved backflow preventers that meet all local code requirements.
Commercial Backflow Services
Hotels, restaurants, healthcare facilities, and commercial buildings have mandatory backflow compliance requirements. We manage the entire process for multi-device properties.
Irrigation System Backflow
Irrigation backflow preventers are one of the most commonly required devices on O'ahu. We test, repair, and install devices for residential and commercial irrigation systems.
BWS Compliance Reporting
We handle the paperwork. After testing, we submit your results directly to the Honolulu Board of Water Supply so you have documentation of compliance on file.
Common Questions
Frequently Asked Questions
Why do I need a backflow preventer?
Backflow preventers stop contaminated water from flowing backwards into the public water supply. Without them, irrigation water, chemicals, or non-potable water could enter the drinking water system during a pressure drop. Hawaii and Honolulu BWS require them on irrigation systems, commercial properties, and certain residential connections.
How often does a backflow preventer need to be tested?
Annual testing is required by the Honolulu Board of Water Supply for most commercial and irrigation backflow devices. Some high-hazard applications require more frequent testing. We'll note your device type and schedule reminders so you never miss a compliance deadline.
What happens if I fail a backflow test?
A failed test means your device is no longer protecting the water supply as required. You'll need to repair or replace the device and pass a retest to stay compliant. We can repair most failed devices on the same visit or schedule a quick repair appointment and retest.
Can I test my own backflow preventer?
No — Hawaii requires testing to be performed by a certified backflow tester. The tester must submit results to the Honolulu Board of Water Supply. Our technicians hold the required certifications and handle the entire testing and reporting process.
How long does a backflow test take?
A standard test on a single device takes 15–30 minutes. Commercial properties with multiple devices take longer depending on the number and location of devices. We schedule efficiently and minimize disruption to your property or business.
Stay Compliant — Schedule Your Backflow Test
Annual testing is required. Call Alpha Omega to schedule your certified backflow test and keep your property in compliance with Honolulu BWS requirements.