Railway accident with benzene release into the environment in 2025: estimation of health risks from available data

OBJECTIVES: The aim of the study was to assess potential health risks associated with a large-scale environmental release of benzene following a railway accident in Moravia, Czech Republic, in 2025, with emphasis on differences between population and occupational exposure. METHODS: An assessment of potential health risks associated with exposure was performed using available environmental monitoring data. Conservative exposure scenarios were defined for the general population and for remediation workers. Non-carcinogenic risk was expressed as the hazard quotient (HQ), and carcinogenic risk as excess lifetime cancer risk (ELCR). RESULTS: , particularly for inhalation exposure. CONCLUSION: While population exposure remained within acceptable limits, occupational exposure during remediation represented the dominant health risk. Two workers involved in remediation activities were excluded from further work based on the results of biological monitoring of benzene exposure. The results highlight the need for strict exposure control and health surveillance of exposed workers.