APEX Quality Countertop Drinking Water Filter - 5 Stage Mineral Cartridge - Best Alkaline Filtration System - Recommended for Healthier Safer Purified Water (Red)REDUCES HARMFUL CONTAMINANTS IN TAP WATER: Removes 99% of substances commonly found in sink tap water like chlorine which contribute to bad odors in your water, chloramine, benzene, radon, and heavy metals. It also helps prevent the buildup microorganisms. This filter will also add Magnesium, Potassium and Calcium raising the alkalinity of your water. NOTE: ALKALINE WATER WILL RAISES TDS LEVELS DUE TO THE MINERALS ADDED IN WATER. CONNECTS TO DOMESTIC