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Notice of Proposed Rulemaking | Nonpoint Source Pollution: Remediation of Abandoned Hardrock Mines Impacting Streams, Rivers, and Lakes

Revised On: May. 5th, 2026 - 09:26 am

On March 20, 2026, the comment period begins for the proposed Nonpoint Source Pollution: Remediation of Abandoned Hardrock Mines Impacting Streams, Rivers, and Lakes rulemaking. The comment period ends May 1, 2026.

These rules will codify a standardized process for remediating nonpoint source (NPS) pollution from abandoned hardrock mines. Our focus will be abandoned mines that are impacting or threatening Arizona's surface waters. Please note these rules will only apply when state funds or funds we administer are utilized for abandoned mine pollution remediation.

Review Documents:

  • Notice of Proposed Rulemaking (published by the Secretary of State) | View NPRM > 
  • Rulemaking Page | Learn More >
  • Or in person at the ADEQ Record Center | Learn How >

Public Comment Period:

Dates: March 20, 2026 – May 1, 2026

Comments may be submitted as follows:

  •      By Email | Send Email >
  •      By Mail (Must be postmarked or received by May 1, 2026):

ADEQ
Water Quality Division
Attn: Jonathan Quinsey
1110 W. Washington St.
Phoenix, AZ  85007

  •      At Virtual Public Hearing | April 30, 2026, 2 – 3 p.m. 
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