Underground Injection Control (UIC) Rulemaking


ADEQ is required under ARS §§ 49-203(5) and 49-257.01(A) to adopt a permit program for underground injection control (UIC), as administered under the Safe Drinking Water Act (SDWA; 42 USC § 300h et seq.). Any UIC rules promulgated by the State of Arizona shall not have the force and effect of law until the US Environmental Protection Agency (EPA) approves the transfer of primary enforcement authority (“Primacy”) through EPA’s publication of a final rule granting ADEQ Primacy in the Federal Register (see 40 CFR § 145.31). ADEQ proposes a new regulatory framework to articulate compliance expectations, mandate regulatory duties, and identify certain rights of those regulated through the state UIC program. The Governor’s office approved an exemption from Executive Order 2018-02 on May 7, 2018.


Notices of Final Rulemaking

Effective Date: September 7, 2022
Note: UIC rules become effective in the Arizona Administrative Code on September 7, 2022.  However, Arizona UIC program will not have primacy enforcement authority until EPA grants ADEQ primacy; projected for late 2023; see Final Rule R18-9-A602(A).

Notices of Docket Opening

  • 25 AAR 2491 (Sept. 27, 2019) | View >
  • 26 AAR 2003 (Sept. 25, 2020) | View >
  • 27 AAR 1592 (Oct. 1, 2021) | View >

Notices of Proposed Rulemaking

Notice of Comment Period and Public Hearing | View >

  • Comment period: Jan. 10, 2022 – Feb. 14, 2022
  • Virtual Public Hearing
         Date: Feb. 14, 2022
         Time: 10 a.m.
         Location: Online via GoToWebinar

Additional Information:

  • Governor’s Regulatory Review Council (GRRC) Study Session and Council Meeting Agendas, Meeting Documents, including PDF copies of materials provided to GRRC for rulemakings, and Minutes will be available at https://grrc.az.gov/meeting-information.
  • Water Quality Division UIC Program | Learn More >
  • Arizona UIC Primacy Stakeholder Materials | Learn More >