On Sept. 22, 2026, the comment period begins for the proposal to renew an Arizona Pollution Discharge Elimination System (AZPDES) permit to TA Operating, LLC, for the Petro Stopping Center Wastewater Treatment Plant located in Mohave County, Arizona. The comment period ends Oct. 22, 2026.

AZPDES Permit No.: AZ0022756

Permittee: 

TA Operating, LLC

Facility: 

Petro Stopping Center Wastewater Treatment Plant

970 S. Blake Ranch Road

Kingman, Arizona 86401
Mohave County

TA Operating, LLC, has submitted a renewal application for an AZPDES individual permit for the proposed discharge of up to 0.08 million gallons per day (MGD) of treated domestic and commercial wastewater from the Petro Stopping Center Wastewater Treatment Plant. The discharge would flow to an unnamed wash, which is a tributary to Knight Creek in the Bill Williams River Basin in Mohave County, Arizona. The facility is a privately owned treatment works that receives domestic and commercial wastewater sources from the truck stop and surrounding facilities. Sludge from the facility is pumped to drying beds and disposed of at the Cerbat Landfill.

Review Documents:

• Original Published Public Notice | View Notice > 
• Draft Permit | View Permit >
• Draft Fact Sheet | View FS >  
• In person at the ADEQ Record Center | Learn How >

Public Comment Period:

Dates: Sept. 22, 2026 – Oct. 22, 2026

Comments may be submitted as follows:

•      By Email | Send Email >
•      By Mail (Must be postmarked or received by Oct. 22, 2026):

ADEQ
Water Quality Division, Surface Water Protection Permits
Attn: Benjamin Karls
1110 W. Washington St.
Phoenix, AZ  85007

On Sept. 21, 2026, the comment period begins for the proposal to issue an Arizona Pollutant Discharge Elimination System (AZPDES) renewal permit to Central Arizona Project (CAP) Water Conservation District for its Havasu (Mark Wilmer) Pumping Plant located in La Paz County, Arizona. The comment period ends Oct. 21, 2026.

AZPDES Permit No.: AZ0023990

Permittee: 

CAP Water Conservation District

Facility: 

Havasu (Mark Wilmer) Pumping Plant
60900 Highway 95
Parker, Arizona 85334
La Paz County

The CAP Water Conservation District applied for a renewal AZPDES permit for the proposed discharge of up to 0.122 million gallons per day (MGD) of non-domestic wastewater from the Havasu (Mark Wilmer) Pumping Plant to Lake Havasu in La Paz County, Arizona. The pumping plant is a water supply system that draws water from the Colorado River and transfers it to the CAP canal system for use in Maricopa, Pinal, and Pima counties.

Review Documents:

• Original Published Public Notice | View Notice > 
• Draft Permit | View Permit > 
• Draft Fact Sheet | View FS >  
• In person at the ADEQ Record Center | Learn How >

Public Comment Period:

Dates: Sept. 21, 2026 – Oct. 21, 2026

Comments may be submitted as follows:

•      By Email | Send Email >
•      By Mail (Must be postmarked or received by Oct. 21, 2026):

ADEQ
Water Quality Division, Surface Water Protection Permits
Attn: Rachael Willis
1110 W. Washington St.
Phoenix, AZ  85007

On Sept. 18, 2026, the comment period begins for the Total Maximum Daily Load (TMDL) for the Upper Queen Creek Watershed, for copper and lead impairments on Queen Creek and its tributaries in Pinal County near Superior, Arizona. The comment period is extended to Oct. 27, 2026.

A TMDL is a scientific determination of the maximum amount of a given pollutant that a surface water can assimilate and still meet the water quality standards that protect human health and aquatic life. The TMDL program is designed to help an impaired stream or lake meet its water quality standards and support its designated uses, such as protection of aquatic life, drinking water, or fish consumption | Learn More >

Review Documents: 

• Original Published Public Notice | View Notice > | View Notice of Extension >
• Draft Total Maximum Daily Load | View TMDL>  
• Modeling Report | View Report >
• In person at the ADEQ Record Center | Learn How >

Public Comment Period:

Dates: Sept. 18, 2026 – Oct. 27, 2026

Comments may be submitted as follows:  

• Online | Submit Comments >
• By Email | Send Email >
• By Mail (Must be postmarked or received by Oct. 27, 2026):

ADEQ
Water Quality Division, Surface Water Sampling & Source ID
Attn: Zachary White
1110 W. Washington St.
Phoenix, AZ  85007

On Aug. 26, 2026, the comment period begins for the preliminary decision to issue an Individual Aquifer Protection Permit to Arizona Electric Power Cooperative (AEPCO) for a new peaking natural gas-fired electric generating facility located in Mohave Valley, Arizona. The comment period has been extended through Oct. 30, 2026.

Aquifer Protection Permit (APP) No.:  515173

The requirements in this permit will allow the permittee to comply with the two key requirements of the Aquifer Protection Program: 1) meet Aquifer Water Quality Standards at the Point of Compliance; and 2) demonstrate Best Available Demonstrated Control Technology.

Permittee:

AEPCO

Facility:

Mohave Energy Park
2897 E. King Street
Mohave Valley, Arizona 86440
Mohave County

Review Documents:

• Updated Public Notice | View Notice >
• Draft Permit | View Permit >
• Draft Executive Summary | View Summary >
• In person at ADEQ Record Center | Learn How >

Public Comment Period:

• Dates: Aug. 26, 2026 – Oct. 30, 2026

Comments may be submitted as follows:

• Online | Submit Comments >
• By Email | Send Email >
• By Mail (Must be postmarked or received by Oct. 30, 2026):

ADEQ
Water Quality Division, Groundwater and Reuse
Attn: Maribeth Greenslade
1110 W. Washington St.
Phoenix, AZ  85007 

• At the Public Hearing in Mohave Valley, Arizona | Wednesday, Oct. 7, 2026, 6 p.m. | View Details >