State rules
Backflow tester rules by state
Public water systems must keep drinking water from flowing backward into the main. States with Safe Drinking Water Act primacy write the cross-connection rule. Some states certify testers themselves. Others accept a named certification body, and some leave the tester list to the local water utility. Open a state for the agency we verified and the official page. Dollar fees are shown only when that page published them.
Try a ZIP like 30303, “Travis County” or “Columbus, OH”
Number = verified local listingsDashed = general info and who to call (no verified state data yet)
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