The Arrowhead Puritap RO system is an obsolete RO system that filters your water in 3 stages. Sediment, chlorine, taste and odor are reduced by the sediment and carbon filters, and impurities larger than .001 microns are filtered out by the CTA RO membrane.
Due to a discontinued membrane, we recommend switching to a RO Retrofit Kit, which allows for continued use of the tank and faucet in addition to upgrades in filtration technology. If your system features 3/8" tubing to the faucet, replace with the Goldline-50-RK RO Retrofit Kit. A John Guest Stem Reducer may be required. For systems with 1/4" tubing to the faucet, replace with the PureValue 5EZ50-RK RO Retrofit Kit. Please check your system as a different retrofit kit may be required.