Posted On: Jun. 29th, 2026 - 04:59 pm
On June 30, 2026, the comment period begins for the proposal to renew an Arizona Pollution Discharge Elimination System (AZPDES) permit to Pima County for the Mount Lemmon Wastewater Reclamation Facility (WRF) located in Pima County, Arizona. The comment period ends July 30, 2026.
AZPDES Permit No. AZ0022250
Permittee:
Pima County
Facility:
Mount Lemmon WRF
12633 N. Sabin Canyon Road
Summerhaven, Arizona 85619
ADEQ applied for the renewal of an AZPDES permit for the proposed discharge of up to 0.015 million gallons per day (MGD) of treated domestic wastewater from the Mount Lemmon WRF to an unnamed wash listed in Arizona Administrative Code R18-11 Appendix B in the San Pedro – Willcox Playa – Rio Yaqui River Basin at Outfall 001 Township 11 S, Range 16 E, Section 30, Outfall 002 Township 11 S, Range 16 E, Section 30, and Outfall 003 Township 11 S, Range 16 E, Section 30 in Pima County, Arizona. The Mount Lemmon WRF is a publicly-owned treatment works that receives domestic wastewater from residential and commercial sources in Summerhaven. Sludge is transported offsite via truck to Tres Rios WRF.
Review Documents:
Public Comment Period:
Dates: June 30, 2026 – July 30, 2026
Comments may be submitted as follows:
- By Email | Send Email >
- By Mail (Must be postmarked or received by July 30, 2026):
ADEQ
Water Quality Division, Surface Water Protection Permits
Attn: Benjamin Karls
1110 W. Washington St.
Phoenix, AZ 85007
