A device for preventing build up and/or reducing biofilm pathogens frommedical ordental fluids includes a housing defining a sanitizing chamber. A waterconduit mayextend through the sanitizing chamber and channel water from a water inlet toa wateroutlet. A gas inlet may receive pressurized gas and gas outlet may flow thepressurizedgas from the inlet to the gas outlet through the sanitizing chamber. A lightsource emitslight into the sanitizing chamber, the emitted light being incident on thewater conduitand/or the pressurized gas in the sanitizing chamber and having wavelengthseffectivefor removing biofilm pathogens from the water and/or the pressurized gas tosanitize thewater and the pressurized gas. The sanitized water and gas may be used whenperforming medical or dental procedures. The device may further include arecirculationsystem for recirculating water from the water outlet to the water inlet.