An official website of the United States government.

About EPA

EPA Region 10 (Pacific Northwest)

Serving Alaska, Idaho, Oregon, Washington, and 271 Tribal Nations

Sawtooth Mountains, south of Stanley, Idaho.

Coronavirus (COVID-19) Information

On this page:

Key Issues

Learn more about our work in Alaska, Idaho, Oregon, and Washington.

Public Notices

Proposed Stormwater Permit for Pierce County MS4

Comments Due: 05/15/2021
Location: Washington, Pacific Northwest

Proposed Stormwater Permit for Washington Department of Transportation MS4

Comments Due: 05/15/2021
Location: Washington, Pacific Northwest

Proposed Stormwater Permit for City of Tacoma MS4

Comments Due: 05/15/2021
Location: Washington, Pacific Northwest

Proposed Stormwater Permit Modification for City of Caldwell MS4 in Idaho

Comments Due: 05/19/2021
Location: Idaho, Pacific Northwest

Proposed Permit for Tulalip Tribes of Washington Wastewater Treatment Plant

Comments Due: 05/24/2021
Location: Washington, Pacific Northwest

Proposed Wastewater Permit for Salish Seafoods

Comments Due: 05/26/2021
Location: Washington, Pacific Northwest

Proposed Stormwater Permit Modification for Pocatello Urbanized Area MS4s in Idaho

Comments Due: 05/26/2021
Location: Idaho, Pacific Northwest

Proposed Aquifer Exemption and UIC Class I Permit for Kenai Gas Field in Alaska

Comments Due: 05/31/2021
Location: Alaska, Pacific Northwest