UPDATE: Ecology's new website will be live on Monday morning! Our official web address will be https://ecology.wa.gov

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My Watershed

Toxics Release Inventory in Washington State

The Toxics Release Inventory (TRI) identifies chemicals manufactured and used at certain businesses or facilities. It tracks accidental and routine releases of those chemicals to air, land, and water and how waste is managed or disposed.

TRI results help states and communities understand potential risks from chemical releases. The information helps us plan to reduce these risks, improve safety, and protect our environment. TRI is under Section 313 of EPCRA, the Emergency Planning and Community Right-to-Know Act.

Facilities in Washington send TRI reports to both the U.S. Environmental Protection Agency (EPA) and the state. Ecology manages the reports in Washington. EPA compiles the national TRI data each year and makes the information available through several data access tools:

2015 TRI Information Now Available!
See the latest data from facilities in Washington.

What is a Release?
A “release” is the amount of a toxic chemical a facility emits or disposes to air, water, or land.

Who Reports?
Facilities required to report under TRI include:

  • Metal mining
  • Coal mining
  • Electric utilities
  • Paper manufacturers
  • Commercial hazardous-waste treatment
  • Petroleum bulk terminals
  • Chemical wholesalers
  • Solvent recovery services
  • Federal facilities

TRI collects chemical information from more than 23,000 facilities nationwide that manufacture, process, or otherwise use over 650 chemicals. In addition to chemical releases, TRI collects information about how hazardous waste is managed through disposal, treatment, recycling, or energy recovery.

More information about TRI: