Other pathogens/ parasites can find their way into our drinking water supply, however Cryptosporidium and Giardia are the two most common. The reason municipality water has a Chlorine taste is because Chlorine/ Chloramine is used to treat our water supply to kill bacteria however Chlorine does NOT kill many pathogens. UV exposure is a guaranteed solution of preventing pathogens, bacteria and viruses from causing harm to you and your family in your home and keeping customers safe in your businesses.