Reach for the Pentair Pentek CBC-BB Big Blue Carbon Block Sediment Chlorine Taste & Odor Filter when it s time to change the filter in your 10 heavy duty whole house water filtration system. This filter is highly effective at reducing unwanted bad taste & odor and chlorine taste & odor from potable drinking water. This filter is an ideal filter choice for a wide range of applications. It also makes an excellent polishing filter or pre-filter in applications requiring fine filtration and high capacity.