National Neighborhood Data Archive Search for: About NaNDA Projects Cognability HMDA HLD NaNDA Parks and Pollution Proximity Explorer Data News FAQs Contact Us Polluting Sites GeographyCensus Tract, ZCTA Years1987-2021 Data SourceEPA Toxic Release Inventory What’s in the dataset?Locations of toxic chemical release, processing, use, and manufacture as self-reported by industries subject to EPA mandate Download the data