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Best Under-Sink Water Filters of 2025

Under-sink reverse osmosis water filters are recommended if your water contains a wide range of contaminants or bacteria. (To find out, check the water-quality report issued annually by your water supplier, or if you have a well, have your water tested.)  Reverse osmosis filters remove water contaminants like lead, volatile organic compounds (VOCs), PFAS, arsenic, bacteria, and viruses, according to…