APEX MR-1030 Countertop Drinking Water Filter is a revolutionary system that eliminates impurities that impact the color, taste and safety of drinking water, but it's not just what it takes out of the water that you drink that makes it a must-have for the home. This filtration system also helps to balance the pH of water, making it alkaline to better suit your body chemistry. As a result, every sip of water you take provides you with antioxidant protection and offers purifying, detoxifying benefits that are a perfect fit for your healthy lifestyle. This filter is easy to use, as it installs right on top of your counter and can be simply maintained by regularly changing its 10-inch alkaline filters on a regular basis. Stage 1 - Remove Chloramines, Heavy Metal and control Microorganisms with KDF -55. Stage 2 - Removes Chlorine and Odor with Coconut Shell Activated Carbon. Stage 3 - Raises the waters pH and lowers acidity with Calcite. It also increases alkalinity, which many nutritionists recommend.