Release Trend Region 3
The following graph shows the 10-year trend in quantities of TRI chemicals released by facilities located in Region 3.
Note: For comparability, trend graphs include only those chemicals that were reportable to TRI for all years presented.
From 2011 to 2020, releases in Region 3 decreased by 89.4 million pounds (-43%). The decrease in total releases was driven by reduced air releases from electric utilities and fewer pounds of off-site transfers for disposal from the primary metals sector.
From 2011 to 2020:
- Releases in Region 3 decreased by 89 million pounds (-43%), compared to a 26% decrease nationally.
- Quantities of chemicals released into the air and surface waters, and transfers off-site for disposal all decreased. Releases to land increased.
- Facilities in Region 3 reported releasing 120 million pounds of TRI chemicals.
- Since 2019, releases decreased by 4.9 million pounds (-4%), primarily driven by decreased air releases and off-site transfers for disposal, which were somewhat offset by increased releases to water and land. Nationally, releases decreased by 10%.
- 2020 was the first year facilities reported their releases and waste management practices for certain per- and polyfluoroalkyl substances (PFAS) to TRI. One facility in Region 3 reported managing 249,812 pounds of PFAS as waste, 630 pounds of which was released.
Releases by State
The following chart shows each state’s contribution to the region’s TRI chemical release quantities for 2020.
To consider the potential health risk from chronic exposure to these releases, EPA uses a risk-screening score from the RSEI model. The following pie chart shows each state’s contribution to the region’s total RSEI Score for 2020.
- The RSEI model accounts for factors such as a chemical's toxicity, its movement in the environment, and population density, in addition to the pounds of TRI chemicals released. RSEI models releases to the air and water but does not model land disposal quantities. These factors can lead to significant differences between a state’s contribution to regional releases and its contribution to the regional RSEI Score.
For information on the facilities with the largest releases in the region, see the Region 3 TRI factsheet.
This page was published in March 2022 and uses the 2020 TRI National Analysis dataset made public in TRI Explorer in October 2021.