City of Montesano Draft Permit

The draft permit we proposed to reissue to the city of Montesano Wastewater Treatment Plant authorizes the discharge of treated domestic wastewater into the Chehalis River. 

You can view the documents at Montesano Wastewater Treatment Plant Permit Documents or visit the Water Quality Permitting and Reporting Information System (PARIS) website.

Please send your comments in by Oct. 10, 2024 at 11:59 PM.

Background

We regulate wastewater released from municipalities and industries using the National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit. This permit regulates wastewater that goes directly into lakes, rivers, Puget Sound, or the ocean (surface water). All wastewater must be treated before it goes into surface water to protect human health and aquatic life. Learn more about water quality individual permits.