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    Code Guide 4 min read

    Backflow Testing Requirements for Oklahoma City Commercial Properties

    Backflow testing is required by both water utility regulations and fire code. This guide explains what Oklahoma City commercial property owners need to know about testing requirements, who enforces them, and how to stay compliant.

    Who requires backflow testing?

    Oklahoma City Water Utilities requires annual backflow testing for all commercial assemblies. The Oklahoma Department of Environmental Quality enforces testing statewide. Fire code also requires backflow testing for fire sprinkler connections.

    If your backflow certification expires, the water utility may issue a notice or, in extreme cases, interrupt water service until the assembly is tested and certified.

    Fire line vs. domestic backflow testing

    Fire sprinkler line backflow preventers require annual testing under both water utility and fire code requirements. Domestic water system backflow preventers require annual testing under water utility regulations.

    We test both types and provide the certification forms needed for your water authority and your fire marshal.

    Frequently asked questions

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