Completed Rulemakings | Water Quality Division

ADEQ maintains a list of completed rulemakings for two years after their effective dates.

Underground Injection Control (UIC) Rulemaking


ADEQ is required under ARS §§ 49-203(5) and 49-257.01(A) to adopt a permit program for 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.

Docket Openings:

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

Proposed Rulemaking:

Comment Period & Public Hearing:

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

Notices of Final Rulemaking:

Effective Date:
September 7, 2022*

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