Evaluating cumulative risk assessment for environmental justice: a community case study

Area of Science:

• Environmental Health
• Toxicology
• Environmental Justice

Background:

• Cumulative risk assessment (CRA) is crucial for estimating differential health risks from environmental exposures.
• Identifying at-risk populations is essential for environmental justice and risk mitigation.
• CRA methods are still developing, with limited use in pesticide regulations.

Purpose of the Study:

• To advance CRA methodologies.
• To apply and test CRA methods in a community case study.
• To compare cumulative risk and health assessments in South and Southwest Philadelphia.

Main Methods:

• Utilized a multi-endpoint toxicological database for risk assessment.
• Compared cumulative risk scores with mortality data (total and cause-specific).
• Employed regression analyses controlling for demographic factors (race and income).

Main Results:

• Found positive correlations between cumulative risk and total mortality for both White and non-White populations.
• Observed positive correlations between cumulative risk scores and cause-specific mortality in non-Whites.
• Demonstrated statistically significant increases in total (2-6%) and respiratory (8-23%) mortality rates with higher cumulative risk scores, independent of race and income.

Conclusions:

• Successfully demonstrated the application of CRA at the community level.
• CRA provides a health dimension to pollutant data, revealing environmental inequities.
• CRA is a viable tool for identifying high-risk areas and guiding public health actions.