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PUBLIC NOTICE | Proposed Renewal of AZPDES Permit (AZ0025607) for the Nogales International Wastewater Treatment Plant

Public Notice No. 19-33

Published in Nogales International on Nov. 27, 2019

AZPDES Permit No. AZ0025607

ADEQ proposes to issue an Arizona Pollutant Discharge Elimination System (AZPDES) renewal permit to discharge pollutants to Waters of the United States to the following applicant, subject to certain effluent limitations and special conditions:


City of Nogales
777 Grand Avenue
Nogales, AZ 85621


International Boundary and Water Commission, U.S. Section (USIBWC)
4171 N. Mesa Street, C-100
El Paso, TX 79902

Facility Information

The  City of Nogales and the USIBWC applied for a renewal AZPDES permit for the proposed discharge of up to 17 million gallons per day (mgd) of treated domestic wastewater from the Nogales International Wastewater Treatment Plant (NIWTP) to an unnamed wash, tributary to the Santa Cruz River, in the Santa Cruz River Basin in Township 23S, Range 13 E, Section 12, in Santa Cruz County, Arizona. The NIWTP is a publicly owned treatment works that receives domestic wastewater from residential, commercial, and industrial sources from Nogales, Sonora Mexico and domestic and commercial wastewater in Nogales and Rio Rico, Arizona. Sludge is stabilized in an aerobic digester and then dewatered for landfill disposal.

Review Documents

Original Published Public Notice | View/Print > 
Draft Permit | View > 
Draft Fact Sheet | View >

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

Public Comment Period 

Dates: Nov. 27, 2019 – Dec. 27, 2019

Comments may be submitted as follows:
     By Email | Send Email > 
     By Mail (Must be postmarked or received by Dec. 27, 2019):

       Mindi Cross
       Water Quality Division
       1110 W. Washington Street
       Phoenix, AZ  85007