EPA's Risk-Screening Environmental Indicators (RSEI) model estimates hazard which considers the amounts of chemicals released on-site to air and water by Toxics Release Inventory (TRI) facilities, or transferred off-site to Publicly Owned Treatment Works (POTWs) or incinerators, and the toxicity of the chemicals. The following graph shows the trend in RSEI hazard compared to the trend in the corresponding pounds of toxic chemical releases reported to TRI.

From 2005 to 2015

• The increase in the hazard estimate from 2005 to 2007 is driven mainly by an increase in chromium releases to air.
• The overall RSEI hazard estimate decreased by 55%, while corresponding pounds released decreased by 46%. This suggests that in recent years TRI reporters may be releasing chemicals that have slightly lower toxicities.

Next graphic

This page was published in January 2017 and uses the 2015 TRI National Analysis dataset made public in TRI Explorer in October 2016.

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