Releases by Chemical and Industry
Releases by Chemical
Metals accounted for nearly two-thirds of the 3.3 billion pounds of TRI chemicals released in 2022. Metals are primarily disposed of to land, while most nitrate compounds are discharged to water and ammonia is primarily released to air.
Note: In this figure, metals are combined with their metal compounds, although metals and compounds of the same metal are listed separately on the TRI list (e.g., lead is listed separately from lead compounds).
Releases by Industry
The metal mining sector accounted for 44% of releases (1.43 billion pounds), which were primarily in the form of on-site land disposal. Learn more about this sector in the Metal Mining sector profile.
This page was published in March 2024 and uses the 2022 TRI National Analysis dataset made public in TRI Explorer in October 2023.