Maximum level filtration reduces 99% lead, 99% microbial cysts, 97% chlorine taste & odor, 0.5 microns of sand, sediment, rust & soil Tested and certified by NSF international against NSF/ANSI standard 42 and 53 in 3US-MAX-S01 model for the reduction of the claims specified on the performance data sheet Installs in less than 30 minutes and offers 6-month filter life Provides high water flow rates at 1.5 gallons per minute Maximum, advanced and standard replacement filters are interchangeable with system This product is intended to be used on a potable cold water supply only. Your water must be safe for consumption prior to installing and using the product