Summary:

The AWP program (18 A.A.C. 9, Article 8), effective in March 2025, establishes robust regulations for the review, approval, and operation of advanced water treatment facilities (AWTFs), which purify treated wastewater for drinking water use. Through early discussions with prospective applicants, ADEQ has identified an opportunity to enhance program implementation and effectiveness, while still maintaining appropriate protective standards. The AWP Implementation Update Rulemaking will streamline and clarify a limited number of existing rules to meet this objective.

Documents:

Notice of Docket Openings 

• 18 A.A.C. Chapter 1 | TBA  
• 18 A.A.C. Chapter 5 | TBA  
• 18 A.A.C. Chapter 9 | TBA  
• 18 A.A.C. Chapter 14 | TBA  

Additional Information:

• Advanced Water Purification program webpage | View Page >
• Informal Draft Rule Public Engagement: 
  • Informal Draft Rule | TBA
  • Informal Comment Period: June 22, 2026 – July 20, 2026 | Email Comments >
  • Informal Draft Rule Public Engagement:
  • Virtual Stakeholder Meeting:
    Date: June 25, 2026
    Time: 1 – 2:30 p.m. (Arizona)
    Location: Online via GoToWebinar | Register >