www.pmmag.com/articles/88968-upgradeable-drinking-water-system
Upgradeable Drinking Water System
May 1, 2003

The Aqua-Pure drinking water system from CUNO Inc. includes a drinking water faucet, all installation hardware and starter cartridges that delivers bottled-water quality straight from the tap. Performance of the system can be upgraded to provide longer cartridge life and/or superior levels of filtration by simply installing any of four upgrade cartridges.
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