The Pentek EPM-BB Carbon Block water filter cartridge reduces the unappealing taste and odor of chlorine from your water. The EPM-BB cartridge is a modified version of the EP-BB, with the added advantage of low pressure drop at an economical price. Its unique Endurawrap design is also highly effective at reducing dirt and debris in your water, without compromising the filter life through premature plugging from particulate matter. The EPM-BB is a great option for better drinking water in a 10-inch Big Blue whole house filter system delivering clean, crisp refreshment from your tap. The filter cartridge materials are tested and certified by NSF International to NSF/ANSI Standard 42.