Both Ozone and UV systems have been in regular use for decades sanitizing drinking water and swimming pools. Both are more natural, environmentally friendly alternatives to water treatment chemicals and their resulting biproducts. They are effective, safe and reliable methods of water sanitation. Ozone kills bacteria by destroying its cell wall and UV kills bacteria by destroying the nucleic acids in these organisms. These methods leave microorganisms unable to survive or reproduce allowing for the complete sterilization of water.