On Oct. 14, 2026, the comment period begins for the preliminary decision to issue a significant amendment to an Individual Aquifer Protection Program (APP) Permit to the Arizona State Parks Board for the Patagonia Lake State Park Wastewater Treatment Plant located in Santa Cruz County, Arizona. The comment period ends Nov. 13, 2026.

Aquifer Protection Permit (APP) No.:  100624

Permittee:

Arizona State Parks Board

Facility:

Patagonia Lake State Park Wastewater Treatment Plant

400 Patagonia Lake Road
Nogales,Arizona 85621

Santa Cruz County

The permittee is authorized to operate the Patagonia Lake State Park Wastewater Treatment Plant with a maximum average monthly flow of 24,900 gallons per day (GPD). The facility utilizes a Membrane Biological Reactor package plant to treat wastewater at the park generated primarily from recreational restrooms/showers and RV dump stations.

The purpose of this amendment is to repurpose the two-existing bentonite-clay lined facultative lagoons as lined effluent holding and evaporation basins following clean closure verification. Treated effluent is proposed to be managed primarily through discharge to the lined basins for on-site containment and evaporation. In an emergency, the facility has the option to discharge treated effluent to the nearby dry wash, a tributary to Patagonia Lake, in accordance with Arizona Pollutant Discharge Elimination System (AZPDES) Permit No. AZ0026620. Additionally, the applicant requested to replace the discharge monitoring parameter of Fecal Coliform with E. Coli and modify monitoring frequency for E. coli at discharge sampling point for consistency between this permit and the AZPDES permit. This proposed alignment in monitoring frequency will ensure continued protection of public health and the environment.

Review Documents: 

• Original Published 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: Oct. 14, 2026 – Nov. 13, 2026

Comments may be submitted as follows:

• By Email | Send Email >
• By Mail (Must be postmarked or received by Nov. 13, 2026):

ADEQ
Water Quality Division, Groundwater Protection
Attn: Nabila Nafsin
1110 W. Washington St.
Phoenix, AZ  85007 

On Oct. 11, 2026, the comment period begins for the preliminary decision to issue a significant amendment to an Individual Aquifer Protection Program (APP) Permit to Arizona State Parks and Trails for the Kartchner Caverns State Park Wastewater Treatment Facility located in Cochise County, Arizona. The comment period ends Nov. 10, 2026.

Aquifer Protection Permit (APP) No.:  102768

Permittee:

Kartchner Caverns State Park Wastewater Treatment Facility

Facility:

Kartchner Caverns State Park Wastewater Treatment Facility
2980 Highway 90

Benson, Arizona 85602

Cochise County

The purpose of the amendment is to make treatment process modifications to the plant to treat high strength wastewater. The treatment process modifications are centered around two main goals: intensifying microbiology to produce sufficient population to treat the high strength wastewater in the existing tankage and providing a process that is flexible to adjust with the wide range of influent flow into the plant.

Review Documents: 

• Original Published 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: Oct. 11, 2026 – Nov. 10, 2026

Comments may be submitted as follows:

• By Email | Send Email >
• By Mail (Must be postmarked or received by Nov. 10, 2026):

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

On Oct. 9, 2026, the comment period begins for the proposal to renew an Arizona Pollution Discharge Elimination System (AZPDES) permit to Motorola Solutions, Inc., for the North Indian Bend Wash – Area 12 Treatment Facility in Maricopa County, Arizona. The comment period ends Nov. 8, 2026.

AZPDES Permit No. AZ0025933

Permittee:

Motorola Solutions, Inc.

Facility:

North Indian Bend Wash – Area 12 Treatment Facility
8201 East McDowell Road
Scottsdale, AZ 85257
Maricopa County

Motorola Solutions, Inc. applied for a renewal AZPDES permit for the proposed discharge of up to 2.66 million gallons per day (MGD) of treated domestic wastewater from the North Indian Bend Wash – Area 12 Treatment Facility to McKellips Park Lake in Maricopa County, Arizona. The facility is a privately-owned groundwater treatment facility and is considered a minor industrial facility.

Review Documents: 

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

Public Comment Period:

Dates: Oct. 9, 2026 – Nov. 8, 2026

Comments may be submitted as follows:

• By Email | Send Email >
• By Mail (Must be postmarked or received by Nov. 8, 2026):

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

On Oct. 9, 2026, the comment period begins for the proposed rulemaking to amend the Arizona Administrative Code (A.A.C.) Title 18, Chapter 2, Articles 6 (Emissions from Existing and New Nonpoint Sources) and 13 (State Implementation Plan Rules for Specific Locations) to reduce fugitive dust emissions of particulate matter with a diameter of 10 micrometers or less (PM10) in the Yuma PM10 Nonattainment Area and fulfill federal Clean Air Act requirements for moderate PM10 nonattainment areas. The comment period ends Nov. 9, 2026.

Review Documents: 

• Notice of Proposed Rulemaking | View NPRM >
• Rulemaking Page | Learn More >
• In person at ADEQ Record Center | Learn How >

Public Comment Period:

Dates:  Oct. 9, 2026 – Nov. 9, 2026

Comments may be submitted as follows:

• By Email | Send Email >
• By Mail (Must be postmarked or received by Nov. 9, 2026):

ADEQ
Air Quality Division, Air Quality Improvement Planning 
Attn: Steven Burr
1110 W. Washington St.
Phoenix, AZ  85007 

• At Public Hearing | Nov. 9, 2026, 11 a.m. | View Details >
  
  

On Oct. 8, 2026, the comment period begins for the preliminary decision to issue a significant amendment to an Individual Aquifer Protection Program (APP) Permit to the U.S. Department of the Interior – National Park Service for the Grand Canyon National Park – North Rim Wastewater Treatment Plant (WWTP) located in Coconino County, Arizona. The comment period ends Nov. 7, 2026.

Aquifer Protection Permit (APP) No.:  100749

Permittee:

U.S. Department of the Interior – National Park Service

Facility:

Grand Canyon National Park – North Rim WWTP
30 Helibase Rd.
North Rim, AZ 85052
Coconino County

The North Rim WWTP is operated by the Grand Canyon National Park and is located on the North Rim of Grand Canyon National Park, near the North Rim developed area off Helibase Road, in Coconino County, Arizona. The purpose of this amendment is to replace the secondary treatment system with a temporary packaged membrane bioreactor (MBR) treatment system in response to damage sustained in the 2025 wildfire. The facility will have a maximum average monthly flow of 86,000 gallons per day (gpd). The new treatment train includes headworks with mechanical screening, an equalization tank, packaged bioreactors providing biological nitrogen removal, MBR filtration, and ultraviolet (UV) disinfection. Effluent will be discharged to Transept Canyon under a valid Arizona Pollutant Discharge Elimination System (AZPDES) Permit No. AZ0110426.

Review Documents: 

• Original Published 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: Oct. 8, 2026 – Nov. 7, 2026

Comments may be submitted as follows:

• By Email | Send Email >
• By Mail (Must be postmarked or received by Nov. 7, 2026):

ADEQ
Water Quality Division, Groundwater Protection
Attn: Lam Ho
1110 W. Washington St.
Phoenix, AZ  85007 

On Oct. 7, 2026, the comment period begins for the proposal to renew an Arizona Pollution Discharge Elimination System (AZPDES) permit for the City of Kingman Downtown Wastewater Treatment Plant in Mohave County, Arizona. The comment period ends Nov. 6, 2026.

AZPDES Permit No.: AZ0026018

Permittee: 

City of Kingman

Facility: 

Downtown Wastewater Treatment Plant
1760 S. Highway 66
Kingman, AZ 86401
Mohave County

The City of Kingman applied for a renewal AZPDES permit for the proposed discharge of up to 0.62 million gallons per day (MGD) of treated domestic wastewater from the Downtown Wastewater Treatment Plant to the Holy Moses Wash in the Lower Colorado Watershed in Mohave County, Arizona. The facility is a privately-owned treatment works that receives domestic wastewater from residential and commercial sources in the City of Kingman. Sludge is stabilized in an aerobic digester and then thickened or dewatered. Biosolids are landfilled at 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:  Oct. 7, 2026 – Nov. 6, 2026

Comments may be submitted as follows:

•      By Email | Send Email >
•      By Mail (Must be postmarked or received by Nov. 6, 2026):

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