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TRI National Analysis

Risk-Screening Trend

EPA's RSEI model also provides risk “scores” that represent relative human health risk from long-term exposure to TRI chemicals. These scores can be compared to RSEI-generated risk scores from other years. RSEI Scores are different from RSEI Hazard estimates in that RSEI Scores consider the location of the release, chemical fate and transport throughout the environment, and the route and extent of potential human exposure. The following graph shows the trend in the RSEI Score compared to the trend in the corresponding pounds of TRI chemical releases that are included in the RSEI model. Modeled releases include on-site releases to air and water, and off-site transfers to POTWs or incineration.


Note: For comparability, trend graphs include only those chemicals that were reportable to TRI for all years presented.

From 2007 to 2019:

  • The overall RSEI Score estimate decreased by 67%, while corresponding pounds released decreased by 40%.
  • Of the types of releases modeled by RSEI, air releases, by far, contributed the most to the RSEI Scores.
  • RSEI Scores for releases to water have increased in recent years, due in part to increased releases of mercury to water.

RSEI Dashboard

This page was published in January 2021 and uses the 2019 TRI National Analysis dataset made public in TRI Explorer in October 2020.

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