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Public Notice
Water Quality

On Sept. 28, 2022, the public comment period begins for the proposal to issue an Arizona Pollutant Discharge Elimination System (AZPDES) Permit to Grand Canyon National Park for the North Rim Wastewater Treatment Plant (WWTP) located in Coconino County, Arizona. The comment period ends Oct. 28, 2022.

Public Notice Information

AZPDES Permit No. AZ0110426

United States Department of Interior, National Park Service, Grand Canyon National Park (Grand Canyon National Park) applied for a renewal AZPDES permit for the proposed discharge of up to 0.15 million gallons per day (mgd) of treated domestic wastewater from the North Rim WWTP to the Transcept Canyon in Coconino County, Arizona. The WWTP is a federally owned treatment works that receives domestic wastewater from residential and commercial sources from the North Rim of the Grand Canyon National Park, including the visitor center, lodging, restaurant, campground, laundry, and maintenance. Sludge is dried and transported by truck to an off-site storage lagoon at the South Rim biosolids disposal site.


United States Department of Interior

National Park Service, Grand Canyon National Park

Facility Information

North Rim WWTP is located at the North Rim of Grand Canyon National Park, Arizona.

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: Sept. 28, 2022 – Oct. 28, 2022

Comments may be submitted as follows:
     By Email | Send Email >
     By Mail (Must be postmarked or received by Oct. 28, 2022):

       Mindi Cross
       Water Quality Division
       1110 W. Washington St.
       Phoenix, Arizona 85007

A public hearing request must be in writing and must include the reasons for such request.