One of the things I liked about living in Japan 20 years ago was the on-demand water heater that supplied the kitchen sink. Turn it on, and you had instant hot water for doing dishes, cooking, washing ...

If you want to improve the taste and the purity of your tap water without cluttering your countertop or attaching a bulky appendage to your faucet, an under-sink water filter may be the answer. In ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." There are many ways to filter your home's tap water, from carafe-style pitchers to whole-house water ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Tim Heffernan Tim Heffernan is a writer who covers air and water quality and ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Relying on cases of water is both costly and wasteful, which is why we insist on ...