NPDES Permit for City of Kooskia Wastewater Treatment Plant on the Nez Perce Reservation

Below is EPA's National Pollutant Discharge Elimination System (NPDES) permit for the City of Kooskia Wastewater Treatment Plant on the Nez Perce Reservation in Idaho.

Permit number: ID0021814

Current permit

Effective date: January 1, 2020
Permit expires: December 31, 2024 (administratively continued)

• NPDES Permit, City of Kooskia, Idaho, #ID0021814 (pdf) (262.09 KB, Modified December 5, 2019)
  Final wastewater discharge permit.
• NPDES Permit Fact Sheet, City of Kooskia, Idaho, #ID0021814 (pdf) (1.76 MB, September 2019)
  Technical basis for September 2019 draft permit.
• Response to Comments on Draft NPDES Permit for City of Kooskia, Idaho, #ID0021814 (pdf) (54.47 KB, November 2019)
  EPA's responses to public comments on the September 2019 draft permit.

Proposed permit

EPA is proposing to reissue this permit. We are accepting comments on the draft permit from June 15 through July 15, 2026. Copies of the draft permit and supporting documents are available below.

• Draft NPDES Permit, City of Kooskia, Idaho, #ID0021814 (pdf) (724.62 KB, June 2026)
  Proposed permit.
• NPDES Permit Fact Sheet, City of Kooskia, Idaho, #ID0021814 (pdf) (1.96 MB, June 2026)
  Basis for 2026 draft permit.