What is the purpose of exposure assessment in environmental health?

• A. To schedule inspections.
• B. To identify hazards and estimate the extent and level of exposure to determine risk and guide controls.
• C. To calculate healthcare costs.
• D. To identify diseases in the population.

Answer: (C)

Exposure assessment is about figuring out how much of a contaminant people are exposed to, through which routes, and for how long, so we can estimate health risks and decide what controls are needed. It links the presence of a hazard to actual human exposure, turning substance properties into a meaningful risk to the population. This helps prioritize actions, set regulatory or engineering controls, and focus protective measures where they’ll reduce harm most. Scheduling inspections or calculating healthcare costs aren’t the primary goals of exposure assessment, and simply identifying diseases belongs to disease surveillance and epidemiology rather than assessing how people are exposed to environmental hazards.