With the 6 Stage Replacement Filter you receive all the benefits that a brand new filter system would bring to your water supply. It's recommended that you replace your cartridge every 6-12 months to preserve the intended lifespan of the filtration system. This cartridge allows you to replenish the individual levels of the process, which in turn keeps the pressure levels balanced and fully-functional. By taking advantage of the 6 Stage Replacement Cartridge, you are providing your water filtration system with the resources it needs to ensure the safety of your water supply. Depending on the source of your water supply, some water may contain higher levels of sediments and bacteria, which requires more consistent replacement of your cartridges as a vital part of maintaining year-round clean drinking water.