Which database catalogs toxic chemicals that are being used, manufactured, treated, transported, or released into the environment?

• A. National hazardous substances list
• B. Clean Air Act toxic list
• C. Superfund information
• D. Toxics Release Inventory

Answer: (D)

The Toxics Release Inventory is the government database that specifically catalogs toxic chemicals and how they move through the environment. Administered by the U.S. EPA under the Emergency Planning and Community Right-to-Know Act, facilities above certain quantities report annual releases of listed chemicals to air, water, and land, as well as off-site transfers for treatment or disposal. This public data helps communities understand local chemical risks and lets researchers and policymakers track trends over time.

Other options aren’t designed to provide a single, comprehensive catalog of environmental releases. A general “hazardous substances” list or a Clean Air Act toxic list doesn’t function as a centralized release-and-transfer database, and Superfund information focuses on contaminated sites and cleanups rather than the routine reporting of chemical releases from facilities.