PUBLIC NOTICE | Proposed AZPDES Permit Modification for the City of Mesa

Public Notice No. 16-99

Published in: Arizona Business Gazette  on Thursday, Nov. 3, 2016

Notice: Pursuant to the Clean Water Act and in accordance with Arizona Administrative Code (AAC) R18-9-A907, the Director of ADEQ proposes to issue an Arizona Pollutant Discharge Elimination System (AZPDES) Permit to discharge pollutants to U.S. waters to the following applicant, subject to certain effluent limitations and special conditions:

Facility Name

City of Mesa
AZPDES Permit No. AZ0025151

Facility Location

City of Mesa
P. O. Box 1466
Mesa, AZ 85211-1466


The city of Mesa operates the Southeast Water Reclamation Plant (SEWRP) for the treatment and disposal of domestic wastewater. On Sept. 12, 2016, ADEQ received a request from the permittee to modify the AZPDES permit, which became effective on March 18, 2015. The permit authorizes the discharge of up to 8 million gallons per day (mgd) of treated domestic wastewater from the SEWRP to the East Maricopa Floodway, tributary to the Gila River in the Middle Gila River Basin in Township 1 S, Range 6 E, Section 12, in Maricopa County, Ariz. The modification request is to reduce the sampling frequency for chromium (total), chromium VI, copper, cyanide, iron, hydrogen sulfide, selenium and sulfides from monthly to quarterly. Additional data was provided for the parameters for review. An assessment of the data indicates no reasonable potential for an exceedance of the standard exists for chromium (total), chromium VI, iron, selenium, hydrogen sulfide and sulfides. Therefore, those parameters only require effluent characterization sampling quarterly. However, since the data indicates a reasonable potential for an exceedance of the standard exists, limits remain in the permit for copper and cyanide and sampling is required monthly.                       

Review Documents

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

Public Comment Period 

Dates: Oct. 21, 2016 – Nov. 20, 2016

All written comments received by ADEQ by the close of business 30 days after publication of this notice will be considered in the final permit decision. A public hearing request must be in writing and must include the reasons for such request. If there is a significant degree of public interest, the Director will hold a hearing in accordance with AAC R18-9-A908(B).

Comments may be submitted as follows:
     By Email | Send Email > 
     By Mail (Must be postmarked by Dec. 3, 2016):

       Jacqueline May
       Water Quality Division
       1110 W. Washington Street
       Phoenix, AZ  85007 

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