Hydration Requirements During Firefighting Operations
topic
Firefighter sweat rates during structural firefighting operations measured at 1 to 2 litres per hour create significant dehydration risk during extended operations where water replacement is not possible, with dehydration above 2 percent body mass impairing thermoregulation, increasing cardiovascular strain, reducing work capacity, and amplifying heat stroke risk, requiring structured hydration protocols during rehabilitation and before firefighting operations that are supported by accessible hydration provisions in the operational environment.
Role
Identifies dehydration as an aggravating factor in firefighter heat stress and cardiovascular risk that clothing performance cannot compensate for, with adequate hydration being an essential complement to physiological performance-optimised clothing in comprehensive firefighter heat stress management, and sweat rate measurements from field studies informing the hydration recommendations that fire departments communicate to firefighters as essential health and safety practice.