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Public Notice
Water Quality

On March 30, 2023, the public comment period begins for the proposal to issue Arizona Pollutant Discharge Elimination System (AZPDES) renewal permit number AZ0024775 to Mountain Pass Utility Company for SaddleBrooke Ranch Water Reclamation Plant (WRP) located in Pinal County, Arizona. The comment period ends May 1, 2023.

Public Notice Information

Public Notice No. 22-56

Published in: Arizona Business Gazette on March 30, 2023

AZPDES Permit No. AZ0024775

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


Mountain Pass Utility Company
9532 E. Riggs Road
Sun Lakes, AZ 85248

Facility Information

Mountain Pass Utility Company applied for a renewal AZPDES permit for the proposed discharge of up to 0.249 million gallons per day (mgd) of treated domestic wastewater from the SaddleBrooke Ranch Water Reclamation Plant (WRP) to the Big Wash – Headwaters to confluence with Cañada del Oro in the Santa Cruz River Basin in Pinal County, Arizona. The SaddleBrooke Ranch WRP is a privately owned treatment works that receives domestic wastewater from residential sources in SaddleBrooke Ranch. Following digestion, liquid sludge is transported either to the SaddleBrooke Wastewater Treatment Plant (AZPDES permit number AZ0022853) where it is treated and dewatered prior to disposal at Marana Regional Landfill in Marana, Arizona, or directly to a landfill. At the time of this permit renewal, liquid sludge is transported directly to Waste Connections of Arizona Landfill in Eloy, Arizona.

Review Documents

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

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

Public Comment Period 

Dates: March 30, 2023 – May 1, 2023

Comments may be submitted as follows:
     By Email | Send Email > 
     By Mail (Must be postmarked or received by May 1, 2023):

       Water Quality Division, Surface Water Protection
       Attn: Corin Hammond

       1110 W. Washington St.
       Phoenix, AZ  85007