This unit includes the genuine Omnipure granulated activated carbon pre-filter cartridge the Q5540 (coconut carbon) and the genuine Omnipure Q5515 moulded carbon block filter which is 0.5 to 1 micron, Cryptosporidium and Giardia rated, chlorine and chemical removal for 12,000 litres, lead removal as well for 4,750 litres.