Anyone who goes through more than a couple of gallons of drinking water a day will probably be happiest with an under-sink filtration system like the Aquasana AQ-5200. If you prefer (or need) filtered water, this provides a continuous supply of it on demand from a separate tap. We recommend the Aquasana AQ-5200 because its certifications are among the best of any system we’ve found.
via Wirecutter: Reviews for the Real World
The Best Under-Sink Water Filter