Public Notice: Proposed Reissuance of NPDES Permit No. NN0020265; Navajo Tribal Utility Authority (NTUA) Chinle Wastewater Treatment Plant and Collection System, Chinle, AZ

Proposed Reissuance of NPDES Permit No. NN0020265; Navajo Tribal Utility Authority (NTUA) Chinle Wastewater Treatment Plant and Collection System, Chinle, AZ
How to Comment
Comments Due

To submit comments, request a public hearing, or to obtain more information or the administrative record, please contact:
Becky Mitschele
mitschele.becky@epa.gov
EPA Region 9, NPDES Permit Section
(415) 972-3492

Currently, EPA is only receiving comments or requests via email. If you are unable to submit electronically or need other assistance, please contact the Permits Office contact listed above. If you need assistance in a language other than English or if you are a person with disabilities who needs a reasonable accommodation at no cost to you, please reach out to the Permits Office contact by email or phone.

All data submitted by the applicant is available as part of the administrative record.

A request for a public hearing must be in writing and must state the nature of the issues proposed to be raised in the hearing.

Do not submit any information you consider to be Confidential Business Information. Multimedia submissions (audio, video, etc.) must be accompanied by a written comment. The written comment is considered the official comment and should include discussion of all points you wish to make.

Publish Date

Summary

The U.S. Environmental Protection Agency, Region 9 (EPA) is issuing a notice of proposed action under the Clean Water Act (CWA). EPA is proposing to issue a National Pollutant Discharge Elimination System (NPDES) permit NN0020265 to Navajo Tribal Utility Authority (NTUA) Chinle Wastewater Treatment Plant and Collection System, Chinle, AZ.

Facility

Chinle Wastewater Treatment Plant and Collection System
0.2 miles east of US Highway 191
1.8 miles from NTUA Chinle District Office
Apache County, AZ 86503

Permittee

Navajo Tribal Utility Authority (NTUA) 
P.O. Box 549
Chinle, Arizona 86503 

The permit authorizes the discharge of treated effluent from the Chinle wastewater treatment plant to the Nazlini Wash, tributary to the San Juan River. The Navajo Tribal Utility Authority (NTUA) operates the treatment plant and is decommissioning the current plant. NTUA is currently constructing a new activated sludge treatment facility that will discharge treated secondary effluent to the Nazlini Wash.

Applicants or Respondents

Navajo Tribal Utility Authority (NTUA)

P.O. Box 549
Chinle, AZ 86503
United States

Permit Number
NPDES Permit No. NN0020265

Related Documents

Contact us about NPDES permits around the nation to ask a question, provide feedback, or report a problem.
Last updated on February 6, 2026