The 5 Best Under-Sink Water Filters of 2023 for Clean Tap Water

We updated this guide in December 2022 to ensure all of our recommendations, tested and vetted by the Good Housekeeping Institute Home Improvement Lab, were in stock and correctly priced. We also added a new pick from Brondell based on our latest round of testing, as well as more expert insights into the buying process.

The experts at the Good Housekeeping Institute Home Improvement Lab regularly test all kinds of water filters, from water filter pitchers that live in your fridge to shower filters that attach directly to the showerhead. Those options have their benefits, but under-sink water filters are the type we recommend the most, since they offer the best combination of performance, value and ease-of-use.

As the name implies, under-sink water filters are installed in the cabinet under the kitchen sink, with the dispenser typically stationed next to your kitchen faucet. “The systems take up a bit of cabinet space, but they don’t clutter the sink deck the way countertop filters do, and they’re not clunky like faucet-mounted filters,” says Rachel Rothman, executive technical director at the Good Housekeeping Institute.

In addition to being streamlined and discreet, the under-sink water filters that make our list all do an excellent job of removing contaminants, without premature clogging.

Our top picks:

Once you've perused our picks, read on for more advice from on our experts, like what to know about the different filter types and how to determine the risk level of your home's drinking water.