A chlorine filter has become a must-have for many homes because of the benefits it brings. The first and most important benefit is health protection. Chlorine kills germs, but drinking too much chlorinated water can affect your body over time. Chlorine can react with natural organic matter in water and form harmful substances called disinfection by-products. These by-products may cause long-term health issues if consumed regularly. A chlorine filter prevents this by removing chlorine before it reacts.