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  2. Human Health Science Assessments

Human Health Toxicity Value Assessments

ORD Human Health Toxicity Value Assessments provide toxicity information on environmental contaminants and include hazard identification and evaluation of dose-response for those potential hazards. All aspects of ORD HHTV Assessments are flexible—from development process to scope to planned analyses. ORD HHTV Assessments evaluate cancer and non-cancer effects from acute, subchronic or chronic exposures to environmental contaminants.  

The list of ORD HHTV Assessments can be found here:

Chemical Name CASRN Release Date Link  to Assessment
6:2 fluorotelomer sulfonate (6:2 FTS) 27619-97-2 December 19, 2024 Assessment
Lithium bis [(trifluoromethyl)sulfonyl]azanide (HQ-115) 90076-65-6 July 07, 2023 Assessment
Perfluoropropanoic Acid 422-64-0 July 07, 2023 Assessment
Naphthalene (Acute) 91-20-3 July 12, 2022 Assessment

Human Health Science Assessments

  • Human Health Toxicity Value Assessments
  • ORD’s HHSA Portfolio
  • Role of HHSAs in EPA’s Risk Assessment Paradigm
Contact Us About Human Health Science Assessments
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on April 16, 2025
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