A first responder decontamination system, method, and apparatus comprising of a fluid supply in fluidic connection with a pipe further connected to a fluid dispenser, a valve for providing the fluid to the fluid dispenser from the fluid supply, a mounting bracket for adjustably mounting the fluid dispenser to a vehicle, and a pump configured to control pressure of the fluid supply. The fluid supply can be used to decontaminate first responders exiting a contaminated area.