THE COUNTERTOP REVERSE OSMOSIS SYSTEM CONNECTS DIRECTLY TO THE TAP FAUCET - NO UNDER SINK PLUMBING IS REQUIRED. IT HAS BEEN MADE USING HIGH QUALITY COMPONENTS AND FILTERS, AND IS FULLY PORTABLE. THIS UNIT OFFERS AN EFFICIENT FOUR-STAGE FILTRATION PROCESS. IT HAS BEEN FULLY FACTORY TESTED, AND COMES WITH A FULL 5 YEAR WARRANTY (EXCLUDES FILTERS). REVERSE OSMOSIS SYSTEMS REMOVE SALTS, MICRO-ORGANISMS AND HIGH MOLECULAR WEIGHT ORGANIC IMPURITIES, HEAVY METALS, CHEMICALS AND PESTICIDES. SYSTEM CAPACITY DEPENDS ON THE WATER TEMPERATURE, TOTAL DISSOLVED SOLIDS IN FEED WATER, OPERATING PRESSURE AND THE OVERALL RECOVERY OF THE SYSTEM.