You want to use a disinfectant method that does not involve adding chemicals to your water supply. Chlorine is used in the town water supply to kill microorganisms. The problem with adding chemicals to treat water is that it decreases the quality of the water. The UV light method does not degrade the quality of the water.
Great Water Filters promotes the Elite Series 4 UV Light Under Sink Water Filter. It will protect you and your family against the dangers of germs. You can upgrade any of the Elite Series with a UV light filter. The Elite Series 5 Whole House Water Filter System offers an upgrade. Ultra Violet Light water treatment is highly recommended.