NN0020265: Navajo Tribal Utility Authority (NTUA) Chinle Wastewater Treatment Plant and Collection System, Chinle, AZ

Permittee Name: Navajo Tribal Utility Authority (NTUA)
Permittee Address: P.O. Box 549, Chinle, Arizona 86503
Facility Name: Chinle Wastewater Treatment Plant and Collection System
Facility Location Address: 1.8 miles north of NTUA Chinle District Office, 0.2 miles east of US Highway 191, Chinle, Apache County, Arizona
Facility Rating: Minor
This permit was issued on: June 23, 2026
This permit shall become effective on: September 1, 2026
Permit reapplication due no later than: March 4, 2031
This permit shall expire at midnight on: August 31, 2031

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NPDES Permit Fact Sheet: Chinle Wastewater Treatment Plant and Collection System, Chinle AZ (pdf) (453.38 KB, June 2026)
EPA Fact Sheet for National Pollutant Discharge Elimination System (NPDES) Permit No. NN0020265 for Navajo Tribal Utility Authority (“NTUA”) Chinle Wastewater Treatment Lagoon, Chinle, Arizona 86503.
NPDES Permit No. NN0020265: Chinle Wastewater Treatment Plant and Collection System (pdf) (1.29 MB, June 23, 2026)
Authorization to Discharge Under National Pollutant Discharge Elimination System (NPDES) Permit No. NN0020265 for Navajo Tribal Utility Authority (“NTUA”) Chinle Wastewater Treatment Lagoon, Chinle, Arizona 86503.