Waters of Arizona

Waters of Arizona

The EPA announced a new definition for the Waters of the United States (WOTUS) in the Navigable Waters Protection Rule on January 23, 2020. ADEQ is currently reviewing the new definition in detail to ensure we fully understand how it impacts Arizona waterways | View ADEQ's WOTUS Page >

ADEQ acknowledges that the new definition narrows protection for some Arizona waterways, including stretches of ephemeral drainages, which only run during or immediately following precipitation events. We are currently developing a ‘local control approach’ at the state level to potentially address any gaps and protect Arizona’s important and precious water resources.

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Through a collaborative stakeholder process, ADEQ is conducting community engagement and Tribal consultations to hear from people throughout Arizona to develop a Waters of Arizona program outline. Legislative approval will be necessary prior to any program going into effect in Arizona.

Please subscribe to our email list for notifications and regularly check this page for updates regarding Waters of Arizona.

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