Unlike countertop units that divert water from a tap to a sink-side cartridge, faucet-mounted water filters are compact devices that attach directly to your faucet. Depending on their efficacy, they ...

Tired of plastic water bottles piling up? A top-rated filter can improve the taste and purity of your water while sparing the environment. An under-sink water filter can deliver cleaner, ...

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 ...