The Everpure H-300+M water filter system is equipped with a Performance Indication Device (PID), which operates on two standard AA batteries. The PID provides real-time monitoring of the filter's capacity. The PID device makes the H-300+M water treatment system different than the H-300 system. Finely polishes treated water to premium quality for drinking and cooking. Reduces chlorine taste and odor and chloramines. Reduces dirt, rust, asbestos fibers and other particulates such as oxidized iron, manganese and sulfides. Reduces parasitic protozoan cysts such as Giardia, Entamoeba, Cryptosporidium. Controls even extreme levels of common off tastes and odors, including those which are earthy, moldy and fishy. Reduces lead to below the Federal Action Level of 10 ppb. Effectively reduces Volatile Organic Chemicals (VOCs), including Trihalomethanes (THMs). KDF Media reduces limescale buildup in water-using appliances as tested by KDF Fluid Treatment, Inc. KDF Media provides bacteriostatic control as tested by KDF Fluid Treatment, Inc.