This water purifier have a Sedinent Cartridge in its transparent housing filter. It's the pre-filtration of piped water. Water Filter's Type:SRWP-1Awater filtration system,household water purifier,water purifier filterThis filter can removal of sand,silt,dirt and rust particle,and then it can deeply adsorption some substances that hazardous to health,such as water color,smell,halogenated ...