What is a Certified Backflow Tester?

What is a certified backflow tester? A certified backflow tester is a licensed professional who inspects and tests backflow prevention devices to ensure water flows in one direction only. They are trained to identify and fix issues that could contaminate drinking water. Certification requires passing a written and hands-on exam plus ongoing recertification.

Why Certification Matters Backflow can allow contaminants—like fertilizers, chemicals, or even bacteria—to enter the clean water supply. That’s bad news for public health. Certified backflow testers make sure prevention devices are functioning properly and meet local water district requirements.

How Do You Become a Certified Tester?

To become certified, individuals must:

• Complete a state-approved training course

• Pass both a written exam and a hands-on performance test

• Maintain certification through periodic renewal (usually every 2–3 years)

Most states require testers to register with the Department of Health or a local water authority.

When Should You Call One?

If you own a backflow prevention assembly—like those used on irrigation systems, soda machines, or fire sprinklers—you’re required to have it tested annually by a certified tester. Local water purveyors often send reminders, but it’s your responsibility to stay compliant. You might search for " licensed backflow tester near me", but you've already found one here with Certified Backflow Testing. Need a Certified Backflow Tester?

If you’re in Western Washington, we’ve got licensed, approved backflow testers ready to help. We handle everything from testing and reporting to repairs and replacement if needed. Schedule your test today - call 425-427-8889!