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Best Under-Sink Water Filters

Updated November 2018
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BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We buy all products with our own funds, and we never accept free products from manufacturers.
BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers.
BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We buy all products with our own funds, and we never accept free products from manufacturers.
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We purchase every product we review with our own funds — we never accept anything from product manufacturers.

  • 25 Models Considered
  • 6 Hours Researched
  • 1 Experts Interviewed
  • 102 Consumers Consulted
  • Zero products received from manufacturers.

    We purchase every product we review with our own funds — we never accept anything from product manufacturers.

    Why trust BestReviews?
    BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We buy all products with our own funds, and we never accept free products from manufacturers.
    BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers.
    BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We buy all products with our own funds, and we never accept free products from manufacturers.

    Under-sink water filters are one of the easiest ways to have a constant supply of filtered water in your home. They are installed under a sink, typically under the kitchen sink, and divert cold water through a separate filter. The filtered water then comes out of a separate faucet on top of the sink. The filter does need to get changed, and depending on the model you purchase, the filter might last anywhere between 3,000 to 50,000 gallons of water. The sizes of these filters also vary, so make sure you choose one that will fit in the space you have available under your sink.

    The team that worked on this review
    • Kailey
      Kailey
      Writer
    • Linsay
      Linsay
      Editor
    • Melinda
      Melinda
      Web Producer

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