Standard filtered pitchers and refrigerator filters rely mainly on basic carbon filtration, while typical RO systems offer multiple stages of advanced filtration. Because of this, reverse osmosis can address a much broader array of water quality issues. In fact, Culligan reverse osmosis filtration systems are certified to reduce 12x more contaminants than the leading standard filter pitcher.**
** When configured with post-filter and Total Defense cartridge. Contaminants may not be present in your water.