A fuel impurity reduction apparatus includes a sterilizing means, microbial contamination agitating means, operatively interconnected together to a supply of fuel whereby the fuel is pumped under pressure to and through the microbial contamination agitating means and past the sterilizing means which includes a UV light means, and the microbial contamination agitating means includes a passageway with magnetic means therein such that the fuel is treated to reduce any microbial contamination in the fuel. The fuel is pumped from a lower end of the sterilizing means to an upper end of the sterilizing means so that the sterilizing means is always completely surrounded by fuel when the sterilizing means is activated.
A method of treating the fuel is also included. The microbial contamination agitating means and sterilizing means can be combined in one housing with an upper and lower housing or they can be formed as spaced separate housings in one main housing which can then include pumping means and pressure switch.