Columbia River
State of the River Report for Toxics
The Columbia River State of the River Report for Toxics is a summary of what we know about four of the most widespread toxic contaminants found in the Columbia River Basin: mercury, DDT, PCBs, and PBDE flame retardants.
Learn More
- Toxics Reduction Action Plan
- Fish Contaminant Survey
- Health Advisories
- Protecting Water Quality
- About the Columbia River
Watershed flyover
This flyover graphic highlights the Columbia River basin, which covers parts of 7 states and is the fourth largest watershed in the nation.