Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

JavaScript appears to be disabled on this computer. Please click here to see any active alerts.

NPDES Permit for City of Winchester Wastewater Treatment Plant in Idaho

Below are EPA's National Pollutant Discharge Elimination System (NPDES) final permit and supporting documents for the City of Winchester on the Nez Perce Reservation in Idaho.

Permit number: ID0020184
Effective date: October 1, 2020
Permit expires: September 30, 2025

NPDES Permit, City of Winchester WWTP, Idaho, #ID0020184 (pdf) (783.13 KB, August 13, 2020)
Final wastewater permit.
NPDES Permit Fact Sheet, City of Winchester WWTP, Idaho, #ID0020184 (pdf) (1.8 MB, January 2020)
Technical basis for permit.
Response to Comments on Draft NPDES Permit for City of Winchester WWTP, Idaho, #ID0020184 (pdf) (196.01 KB, June 8, 2020)
EPA's responses to public comments on the January 2020 draft permit.