UV lighting is a well known and long utilized water purification mechanism to kill bacteria, germs, virusus in water. the idea was not ridiculous and I've seen a company that appeared to be showing success. i never followed up though because the wu flu DOESN'T EXIST, at least not scientifically in accordance with scientific standards for coronaviruses. this is equivalent in the science community to it not existing. so yeh, let's follow the science Fauxi