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Public Notice
Water Quality

On March 23, 2023, the extended public comment period begins for the proposal to modify Arizona Pollutant Discharge Elimination System (AZPDES) permit number AZ0025178 to the City of Casa Grande for the Casa Grande Wastewater Reclamation Facility (WRF) located in Pinal County, Arizona. The comment period ends April 22, 2023.

Public Notice Information

Public Notice No. 22-49

Published in: Arizona Business Gazette on March 23, 2023

AZPDES Permit No. AZ0025178

ADEQ proposes to modify an AZPDES permit to discharge pollutants to Waters of the United States to the following applicant, subject to certain effluent limitations and special conditions:


The City of Casa Grande
510 E. Florence Blvd.
Casa Grande, AZ, 85122

Facility Information

The City of Casa Grande applied for a major modification to their AZPDES permit for the addition of Outfall 002 and the proposed discharge of up to 14 million gallons per day (mgd) of treated domestic wastewater from the Casa Grande WRF to the Santa Cruz Wash and the North Branch of the Santa Cruz Wash in the Santa Cruz River Basin in Township 6 S, Range 5 E, Sections 12 and 21, in Pinal County, Arizona. The Casa Grande WRF is a publicly owned treatment works that receives domestic wastewater from residential, commercial, and industrial sources in Casa Grande. Sludge is sent to the City of Casa Grande Landfill for disposal.

Review Documents

Original Published Public Notice | View/Download >  
Draft Permit | View/Download >  
Draft Statement of Basis | View/Download >

You may also review the above documentation in person at the ADEQ Record Center | Learn How >

Public Comment Period 

Dates: March 2, 2023 – April 22, 2023

Comments may be submitted as follows:
     By Email | Send Email > 
     By Mail (Must be postmarked or received by April 22, 2023):

       Water Quality Division, Surface Water Protection
       Attn: Rachel Heinz

       1110 W. Washington St.
       Phoenix, AZ  85007