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Meetings & Events

Oct
16
Thu
WRAZ Section Meeting & Webcast
Oct 16 all-day
How to Navigate Enhanced Source Control for AWP
Oct 16 @ 1:30 pm – 2:30 pm
How to Navigate Enhanced Source Control for AWP

Date & Time:
Thursday, October 16, 2025
10:30AM PST _ 1:30PM EST

Register Now!

In Spring 2025 Arizona Department of Environmental Quality (ADEQ) codified the Advanced Water Purification (AWP) rule. Under this rule, an applicant is required to conduct an Initial Source Water Characterization (ISWC) and implement an Enhanced Source Control Plan (ESCP). These two requirements are intertwined and require coordination. The purpose of the ISWC is to understand the baseline Advanced Water Treatment Facility (AWTF) feed water quality. The ESCP serves as a mechanism to identify, control, or eliminate constituents of concern (COCs), as identified during ISWC sampling, that are discharged to the collection system.

An ESCP extends beyond federal Industrial Pretreatment Program (IPP) requirements. Given the lack of environmental buffers inherent to AWP, a primary goal of an ESCP is to provide additional control measures to protect public health, as well as instill public confidence in the safety of AWP. As part of the AWP rule, an ESCP must incorporate monitoring of industry and regulated contaminants as required through an IPP, as well as consider monitoring of unregulated but possibly problematic chemicals (harmful or pass-through/interference) discharged to the sewer. The regulations also stipulate the development of an excursion response plan covering the source(s)/collection system, the Water Reclamation Facility, and the AWTF.

The ISWC lays the groundwork for developing the ESCP. Several approaches used at various utilities implementing potable reuse programs will be showcased to help navigate the requirements of the AWP rule. Additionally, utilities will need to consider other complexities, such as overlap with Tier 1 (Safe Drinking Water Act) constituents and chemicals that undergo changes during advanced treatment as part of the chemical inventory. Ultimately, the core questions that this presentation aims to address are: a) How do the ESCP and ISWC support safe and successful implementation of Arizona’s AWP rule, and b) What are strategies, using examples as a guide, Arizona utilities may use to meet their ESCP and ISWC regulatory requirements?

 

In-Person Location: Black & Veatch 2231 E Camelback Rd, Ste 300, Phoenix, AZ 85016

Moderator:    

  • Erin Young, Water Resources Manager, Flagstaff Water Services, WRAZ President

Presenter:    

  • Doug Rice, Process Engineer, Black & Veatch
  • Mary Kate Forkan, Lead Scientist, Carollo Engineers
Jul
19
Sun
Save the Date: Arizona Water Reuse 2026 Symposium @ High County Conference Center
Jul 19 – Jul 21 all-day

Meeting Resources

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Arizona SymposiumBoard Meetings

Arizona Water Reuse Symposium

Meetings of the Board of Trustees

Webinars

Process Interrupted: Using BOR Funded Desalination Research to Evaluate an Innovative Process Train

Containment of Covid-19 on a College Campus via Wastewater-Based Epidemiology

What Strikes Fear in the Hearts of Arizona Water and Wastewater Utilities? Brine Management

Panel Discussion: Past, Present, & Future Reuse as Part of Arizona’s Water Portfolio

First Full Scale DPR Permit in Arizona for Demonstration and Education

Status of California’s Advanced Water Treatment Operator Certification Program

San Francisco’s Non-Potable Water Program

What are the Legionnaires’ Disease Risks from Exposure to Reclaimed Water used for Cooling Towers and Spray Irrigation?

The Why, Where and How of Potable End Use Groundwater Remediation System Design and Construction

City of Flagstaff Water Supply Alternative Costs

Potable Reuse in Arizona

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