EPA Region 10 (Pacific Northwest)
Serving Alaska, Idaho, Oregon, Washington, and 271 Tribal Nations
![Sawtooth Mountains near Stanley, Idaho.](/system/files/styles/large/private/images/2021-07/pano_stanley_idaho.jpg?itok=udI17SzI)
Key Issues
- Bristol Bay
- Columbia River
- Puget Sound
- Tribal Programs
- Coeur d'Alene Basin/Bunker Hill
- Duwamish River
- Portland Harbor
Learn more about our work in Alaska, Idaho, Oregon, and Washington.