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Health Hazard Evaluations (HHEs)

Each month we will update this page to highlight newly released final reports and information on new and emerging hazards we are evaluating. Check back often to see what we are up to!

What's New

  • Evaluation of Odors in a Medical Center Research Facility
    HHE Program investigators determined that supply air intakes on the roof pulled building exhaust back into the building. Additionally, laboratories were not pressurized as designed. These ventilation issues contributed to the odors reported by employees. To read the full report go to
  • NIOSH Health Hazard Evaluation Program Lead Measurement Database
    We have released a database to provide researchers and other interested stakeholders with lead measurement results collected during health hazard evaluation (HHE) surveys from 1991–2015. The database contains workplace lead measurement results from over 70 HHE reports, including over 1,200 personal lead exposure measurements and 1,900 area lead measurements. For reports posted online, the database provides a direct link to the HHE report for each of the lead measurement results. This database is an ongoing project and will be updated annually to add the most recent HHE lead measurement data. To view the database go to